Change MainTab calls (#3750)

Swaping `MainTab` calls to `h.tab` will not change the normal micro
behaviour.
This changes will make possible to call `ForceQuit`, `VSplitIndex` and
`HSplitIndex` for tabs that aren't main one.

.github/workflows/nightly.yaml

@@ -7,7 +7,7 @@ jobs:
   nightly:
     strategy:
       matrix:
-        go-version: [1.19.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:

.github/workflows/release.yaml

@@ -8,7 +8,7 @@ jobs:
   release:
     strategy:
       matrix:
-        go-version: [1.19.x]
+        go-version: [1.23.x]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:

.github/workflows/test.yaml

@@ -4,7 +4,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.19.x]
+        go-version: [1.19.x, 1.23.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:

LICENSE-THIRD-PARTY

@@ -430,7 +430,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 github.com/gdamore/tcell/LICENSE
 ================
-github.com/zyedidia/tcell/LICENSE (fork)
+github.com/micro-editor/tcell/LICENSE (fork)
 ================
 
 
@@ -1048,7 +1048,7 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
 
 github.com/flynn/json5/LICENSE
 ================
-github.com/zyedidia/json5/LICENSE (fork)
+github.com/micro-editor/json5/LICENSE (fork)
 ================
 
 Decoder code based on package encoding/json from the Go language.
@@ -1108,7 +1108,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 github.com/james4k/terminal/LICENSE
 ================
-github.com/zyedidia/terminal/LICENSE (fork)
+github.com/micro-editor/terminal/LICENSE (fork)
 ================
 
 Copyright (C) 2013 James Gray

Makefile

@@ -5,24 +5,31 @@ VERSION = $(shell GOOS=$(shell go env GOHOSTOS) GOARCH=$(shell go env GOHOSTARCH
 HASH = $(shell git rev-parse --short HEAD)
 DATE = $(shell GOOS=$(shell go env GOHOSTOS) GOARCH=$(shell go env GOHOSTARCH) \
 	go run tools/build-date.go)
-ADDITIONAL_GO_LINKER_FLAGS = $(shell GOOS=$(shell go env GOHOSTOS) \
-	GOARCH=$(shell go env GOHOSTARCH) \
-	go run tools/info-plist.go "$(shell go env GOOS)" "$(VERSION)")
 GOBIN ?= $(shell go env GOPATH)/bin
 GOVARS = -X github.com/zyedidia/micro/v2/internal/util.Version=$(VERSION) -X github.com/zyedidia/micro/v2/internal/util.CommitHash=$(HASH) -X 'github.com/zyedidia/micro/v2/internal/util.CompileDate=$(DATE)'
 DEBUGVAR = -X github.com/zyedidia/micro/v2/internal/util.Debug=ON
 VSCODE_TESTS_BASE_URL = 'https://raw.githubusercontent.com/microsoft/vscode/e6a45f4242ebddb7aa9a229f85555e8a3bd987e2/src/vs/editor/test/common/model/'
+CGO_ENABLED := $(if $(CGO_ENABLED),$(CGO_ENABLED),0)
+
+ADDITIONAL_GO_LINKER_FLAGS := ""
+GOHOSTOS = $(shell go env GOHOSTOS)
+ifeq ($(GOHOSTOS), darwin)
+	# Native darwin resp. macOS builds need external and dynamic linking
+	ADDITIONAL_GO_LINKER_FLAGS += $(shell GOOS=$(GOHOSTOS) \
+		GOARCH=$(shell go env GOHOSTARCH) \
+		go run tools/info-plist.go "$(shell go env GOOS)" "$(VERSION)")
+	CGO_ENABLED = 1
+endif
 
 build: generate build-quick
 
 build-quick:
-	go build -trimpath -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+	CGO_ENABLED=$(CGO_ENABLED) go build -trimpath -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
 build-dbg:
-	go build -trimpath -ldflags "-s -w $(ADDITIONAL_GO_LINKER_FLAGS) $(DEBUGVAR)" ./cmd/micro
+	CGO_ENABLED=$(CGO_ENABLED) go build -trimpath -ldflags "$(ADDITIONAL_GO_LINKER_FLAGS) $(DEBUGVAR)" ./cmd/micro
 
-build-tags: fetch-tags generate
-	go build -trimpath -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+build-tags: fetch-tags build
 
 build-all: build
 
@@ -32,7 +39,7 @@ install: generate
 install-all: install
 
 fetch-tags:
-	git fetch --tags
+	git fetch --tags --force
 
 generate:
 	GOOS=$(shell go env GOHOSTOS) GOARCH=$(shell go env GOHOSTARCH) go generate ./runtime

README.md

@@ -21,22 +21,6 @@ To see more screenshots of micro, showcasing some of the default color schemes,
 
 You can also check out the website for Micro at https://micro-editor.github.io.
 
-## Table of Contents
-
-- [Features](#features)
-- [Installation](#installation)
-  - [Prebuilt binaries](#pre-built-binaries)
-  - [Package Managers](#package-managers)
-  - [Building from source](#building-from-source)
-  - [Fully static binary](#fully-static-binary)
-  - [macOS terminal](#macos-terminal)
-  - [Linux clipboard support](#linux-clipboard-support)
-  - [Colors and syntax highlighting](#colors-and-syntax-highlighting)
-  - [Cygwin, Mingw, Plan9](#cygwin-mingw-plan9)
-- [Usage](#usage)
-- [Documentation and Help](#documentation-and-help)
-- [Contributing](#contributing)
-
 - - -
 
 ## Features
@@ -63,7 +47,7 @@ You can also check out the website for Micro at https://micro-editor.github.io.
 - Syntax highlighting for over [130 languages](runtime/syntax).
 - Color scheme support.
   - By default, micro comes with 16, 256, and true color themes.
-- True color support (set the `MICRO_TRUECOLOR` environment variable to 1 to enable it).
+- True color support.
 - Copy and paste with the system clipboard.
 - Small and simple.
 - Easily configurable.
@@ -88,7 +72,7 @@ Pre-built binaries are distributed in [releases](https://github.com/zyedidia/mic
 
 To uninstall micro, simply remove the binary, and the configuration directory at `~/.config/micro`.
 
-#### Quick-install script
+#### Third-party quick-install script
 
 ```bash
 curl https://getmic.ro | bash
@@ -178,7 +162,7 @@ Without these tools installed, micro will use an internal clipboard for copy and
 
 If your operating system does not have a binary release, but does run Go, you can build from source.
 
-Make sure that you have Go version 1.16 or greater and Go modules are enabled.
+Make sure that you have Go version 1.19 or greater and Go modules are enabled.
 
 ```
 git clone https://github.com/zyedidia/micro
@@ -196,16 +180,20 @@ You can install directly with `go get` (`go get github.com/zyedidia/micro/cmd/mi
 recommended because it doesn't build micro with version information (necessary for the plugin manager),
 and doesn't disable debug mode.
 
-### Fully static binary
+### Fully static or dynamically linked binary
 
-By default, the micro binary will dynamically link with core system libraries (this is generally
-recommended for security and portability). However, there is a fully static prebuilt binary that
-is provided for amd64 as `linux-static.tar.gz`, and to build a fully static binary from source, run
+By default, the micro binary is linked statically to increase the portability of the prebuilt binaries.
+This behavior can simply be overriden by providing `CGO_ENABLED=1` to the build target.
 
 ```
-CGO_ENABLED=0 make build
+CGO_ENABLED=1 make build
 ```
 
+Afterwards the micro binary will dynamically link with the present core system libraries.
+
+**Note for Mac:**
+Native macOS builds are done with `CGO_ENABLED=1` forced set to support adding the "Information Property List" in the linker step.
+
 ### macOS terminal
 
 If you are using macOS, you should consider using [iTerm2](http://iterm2.com/) instead of the default terminal (Terminal.app). The iTerm2 terminal has much better mouse support as well as better handling of key events. For best keybinding behavior, choose `xterm defaults` under `Preferences->Profiles->Keys->Presets...`, and select `Esc+` for `Left Option Key` in the same menu. The newest versions also support true color.

cmd/micro/clean.go

@@ -3,8 +3,8 @@ package main
 import (
 	"bufio"
 	"encoding/gob"
+	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
@@ -12,6 +12,7 @@ import (
 
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 func shouldContinue() bool {
@@ -39,7 +40,16 @@ func CleanConfig() {
 	}
 
 	fmt.Println("Cleaning default settings")
-	config.WriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
+
+	settingsFile := filepath.Join(config.ConfigDir, "settings.json")
+	err := config.WriteSettings(settingsFile)
+	if err != nil {
+		if errors.Is(err, util.ErrOverwrite) {
+			fmt.Println(err.Error())
+		} else {
+			fmt.Println("Error writing settings.json file: " + err.Error())
+		}
+	}
 
 	// detect unused options
 	var unusedOptions []string
@@ -67,16 +77,20 @@ func CleanConfig() {
 			fmt.Printf("%s (value: %v)\n", s, config.GlobalSettings[s])
 		}
 
-		fmt.Printf("These options will be removed from %s\n", filepath.Join(config.ConfigDir, "settings.json"))
+		fmt.Printf("These options will be removed from %s\n", settingsFile)
 
 		if shouldContinue() {
 			for _, s := range unusedOptions {
 				delete(config.GlobalSettings, s)
 			}
 
-			err := config.OverwriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
+			err := config.OverwriteSettings(settingsFile)
 			if err != nil {
-				fmt.Println("Error writing settings.json file: " + err.Error())
+				if errors.Is(err, util.ErrOverwrite) {
+					fmt.Println(err.Error())
+				} else {
+					fmt.Println("Error overwriting settings.json file: " + err.Error())
+				}
 			}
 
 			fmt.Println("Removed unused options")
@@ -85,12 +99,13 @@ func CleanConfig() {
 	}
 
 	// detect incorrectly formatted buffer/ files
-	files, err := ioutil.ReadDir(filepath.Join(config.ConfigDir, "buffers"))
+	buffersPath := filepath.Join(config.ConfigDir, "buffers")
+	files, err := os.ReadDir(buffersPath)
 	if err == nil {
 		var badFiles []string
 		var buffer buffer.SerializedBuffer
 		for _, f := range files {
-			fname := filepath.Join(config.ConfigDir, "buffers", f.Name())
+			fname := filepath.Join(buffersPath, f.Name())
 			file, e := os.Open(fname)
 
 			if e == nil {
@@ -105,9 +120,9 @@ func CleanConfig() {
 		}
 
 		if len(badFiles) > 0 {
-			fmt.Printf("Detected %d files with an invalid format in %s\n", len(badFiles), filepath.Join(config.ConfigDir, "buffers"))
+			fmt.Printf("Detected %d files with an invalid format in %s\n", len(badFiles), buffersPath)
 			fmt.Println("These files store cursor and undo history.")
-			fmt.Printf("Removing badly formatted files in %s\n", filepath.Join(config.ConfigDir, "buffers"))
+			fmt.Printf("Removing badly formatted files in %s\n", buffersPath)
 
 			if shouldContinue() {
 				removed := 0

cmd/micro/debug.go

@@ -18,7 +18,7 @@ func (NullWriter) Write(data []byte) (n int, err error) {
 // InitLog sets up the debug log system for micro if it has been enabled by compile-time variables
 func InitLog() {
 	if util.Debug == "ON" {
-		f, err := os.OpenFile("log.txt", os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
+		f, err := os.OpenFile("log.txt", os.O_RDWR|os.O_CREATE|os.O_TRUNC, util.FileMode)
 		if err != nil {
 			log.Fatalf("error opening file: %v", err)
 		}

cmd/micro/micro.go

@@ -4,10 +4,10 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"os"
 	"os/signal"
+	"path/filepath"
 	"regexp"
 	"runtime"
 	"runtime/pprof"
@@ -18,6 +18,7 @@ import (
 
 	"github.com/go-errors/errors"
 	isatty "github.com/mattn/go-isatty"
+	"github.com/micro-editor/tcell/v2"
 	lua "github.com/yuin/gopher-lua"
 	"github.com/zyedidia/micro/v2/internal/action"
 	"github.com/zyedidia/micro/v2/internal/buffer"
@@ -26,7 +27,6 @@ import (
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/shell"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"github.com/zyedidia/tcell/v2"
 )
 
 var (
@@ -99,7 +99,7 @@ func InitFlags() {
 		fmt.Println("Version:", util.Version)
 		fmt.Println("Commit hash:", util.CommitHash)
 		fmt.Println("Compiled on", util.CompileDate)
-		os.Exit(0)
+		exit(0)
 	}
 
 	if *flagOptions {
@@ -115,7 +115,7 @@ func InitFlags() {
 			fmt.Printf("-%s value\n", k)
 			fmt.Printf("    \tDefault value: '%v'\n", v)
 		}
-		os.Exit(0)
+		exit(0)
 	}
 
 	if util.Debug == "OFF" && *flagDebug {
@@ -136,7 +136,7 @@ func DoPluginFlags() {
 			CleanConfig()
 		}
 
-		os.Exit(0)
+		exit(0)
 	}
 }
 
@@ -209,7 +209,7 @@ func LoadInput(args []string) []*buffer.Buffer {
 		// Option 2
 		// The input is not a terminal, so something is being piped in
 		// and we should read from stdin
-		input, err = ioutil.ReadAll(os.Stdin)
+		input, err = io.ReadAll(os.Stdin)
 		if err != nil {
 			screen.TermMessage("Error reading from stdin: ", err)
 			input = []byte{}
@@ -223,12 +223,55 @@ func LoadInput(args []string) []*buffer.Buffer {
 	return buffers
 }
 
+func checkBackup(name string) error {
+	target := filepath.Join(config.ConfigDir, name)
+	backup := util.AppendBackupSuffix(target)
+	if info, err := os.Stat(backup); err == nil {
+		input, err := os.ReadFile(backup)
+		if err == nil {
+			t := info.ModTime()
+			msg := fmt.Sprintf(buffer.BackupMsg, target, t.Format("Mon Jan _2 at 15:04, 2006"), backup)
+			choice := screen.TermPrompt(msg, []string{"r", "i", "a", "recover", "ignore", "abort"}, true)
+
+			if choice%3 == 0 {
+				// recover
+				err := os.WriteFile(target, input, util.FileMode)
+				if err != nil {
+					return err
+				}
+				return os.Remove(backup)
+			} else if choice%3 == 1 {
+				// delete
+				return os.Remove(backup)
+			} else if choice%3 == 2 {
+				// abort
+				return errors.New("Aborted")
+			}
+		}
+	}
+	return nil
+}
+
+func exit(rc int) {
+	for _, b := range buffer.OpenBuffers {
+		if !b.Modified() {
+			b.Fini()
+		}
+	}
+
+	if screen.Screen != nil {
+		screen.Screen.Fini()
+	}
+
+	os.Exit(rc)
+}
+
 func main() {
 	defer func() {
 		if util.Stdout.Len() > 0 {
 			fmt.Fprint(os.Stdout, util.Stdout.String())
 		}
-		os.Exit(0)
+		exit(0)
 	}()
 
 	var err error
@@ -256,6 +299,12 @@ func main() {
 	config.InitRuntimeFiles(true)
 	config.InitPlugins()
 
+	err = checkBackup("settings.json")
+	if err != nil {
+		screen.TermMessage(err)
+		exit(1)
+	}
+
 	err = config.ReadSettings()
 	if err != nil {
 		screen.TermMessage(err)
@@ -288,7 +337,7 @@ func main() {
 	if err != nil {
 		fmt.Println(err)
 		fmt.Println("Fatal: Micro could not initialize a Screen.")
-		os.Exit(1)
+		exit(1)
 	}
 	m := clipboard.SetMethod(config.GetGlobalOption("clipboard").(string))
 	clipErr := clipboard.Initialize(m)
@@ -307,7 +356,7 @@ func main() {
 			for _, b := range buffer.OpenBuffers {
 				b.Backup()
 			}
-			os.Exit(1)
+			exit(1)
 		}
 	}()
 
@@ -316,6 +365,12 @@ func main() {
 		screen.TermMessage(err)
 	}
 
+	err = checkBackup("bindings.json")
+	if err != nil {
+		screen.TermMessage(err)
+		exit(1)
+	}
+
 	action.InitBindings()
 	action.InitCommands()
 
@@ -434,24 +489,12 @@ func DoEvent() {
 		}
 	case f := <-timerChan:
 		f()
+	case b := <-buffer.BackupCompleteChan:
+		b.RequestedBackup = false
 	case <-sighup:
-		for _, b := range buffer.OpenBuffers {
-			if !b.Modified() {
-				b.Fini()
-			}
-		}
-		os.Exit(0)
+		exit(0)
 	case <-util.Sigterm:
-		for _, b := range buffer.OpenBuffers {
-			if !b.Modified() {
-				b.Fini()
-			}
-		}
-
-		if screen.Screen != nil {
-			screen.Screen.Fini()
-		}
-		os.Exit(0)
+		exit(0)
 	}
 
 	if e, ok := event.(*tcell.EventError); ok {
@@ -459,16 +502,7 @@ func DoEvent() {
 
 		if e.Err() == io.EOF {
 			// shutdown due to terminal closing/becoming inaccessible
-			for _, b := range buffer.OpenBuffers {
-				if !b.Modified() {
-					b.Fini()
-				}
-			}
-
-			if screen.Screen != nil {
-				screen.Screen.Fini()
-			}
-			os.Exit(0)
+			exit(0)
 		}
 		return
 	}

cmd/micro/micro_test.go

@@ -2,18 +2,17 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"testing"
 
 	"github.com/go-errors/errors"
+	"github.com/micro-editor/tcell/v2"
 	"github.com/stretchr/testify/assert"
 	"github.com/zyedidia/micro/v2/internal/action"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/screen"
-	"github.com/zyedidia/tcell/v2"
 )
 
 var tempDir string
@@ -26,7 +25,7 @@ func init() {
 func startup(args []string) (tcell.SimulationScreen, error) {
 	var err error
 
-	tempDir, err = ioutil.TempDir("", "micro_test")
+	tempDir, err = os.MkdirTemp("", "micro_test")
 	if err != nil {
 		return nil, err
 	}
@@ -164,20 +163,22 @@ func findBuffer(file string) *buffer.Buffer {
 	return buf
 }
 
-func createTestFile(name string, content string) (string, error) {
-	testf, err := ioutil.TempFile("", name)
+func createTestFile(t *testing.T, content string) string {
+	f, err := os.CreateTemp(t.TempDir(), "")
 	if err != nil {
-		return "", err
+		t.Fatal(err)
+	}
+	defer func() {
+		if err := f.Close(); err != nil {
+			t.Fatal(err)
+		}
+	}()
+
+	if _, err := f.WriteString(content); err != nil {
+		t.Fatal(err)
 	}
 
-	if _, err := testf.Write([]byte(content)); err != nil {
-		return "", err
-	}
-	if err := testf.Close(); err != nil {
-		return "", err
-	}
-
-	return testf.Name(), nil
+	return f.Name()
 }
 
 func TestMain(m *testing.M) {
@@ -194,18 +195,12 @@ func TestMain(m *testing.M) {
 }
 
 func TestSimpleEdit(t *testing.T) {
-	file, err := createTestFile("micro_simple_edit_test", "base content")
-	if err != nil {
-		t.Error(err)
-		return
-	}
-	defer os.Remove(file)
+	file := createTestFile(t, "base content")
 
 	openFile(file)
 
 	if findBuffer(file) == nil {
-		t.Errorf("Could not find buffer %s", file)
-		return
+		t.Fatalf("Could not find buffer %s", file)
 	}
 
 	injectKey(tcell.KeyEnter, rune(tcell.KeyEnter), tcell.ModNone)
@@ -223,28 +218,21 @@ func TestSimpleEdit(t *testing.T) {
 
 	injectKey(tcell.KeyCtrlS, rune(tcell.KeyCtrlS), tcell.ModCtrl)
 
-	data, err := ioutil.ReadFile(file)
+	data, err := os.ReadFile(file)
 	if err != nil {
-		t.Error(err)
-		return
+		t.Fatal(err)
 	}
 
 	assert.Equal(t, "firstfoobar\nbase content\n", string(data))
 }
 
 func TestMouse(t *testing.T) {
-	file, err := createTestFile("micro_mouse_test", "base content")
-	if err != nil {
-		t.Error(err)
-		return
-	}
-	defer os.Remove(file)
+	file := createTestFile(t, "base content")
 
 	openFile(file)
 
 	if findBuffer(file) == nil {
-		t.Errorf("Could not find buffer %s", file)
-		return
+		t.Fatalf("Could not find buffer %s", file)
 	}
 
 	// buffer:
@@ -275,10 +263,9 @@ func TestMouse(t *testing.T) {
 	// base content
 	injectKey(tcell.KeyCtrlS, rune(tcell.KeyCtrlS), tcell.ModCtrl)
 
-	data, err := ioutil.ReadFile(file)
+	data, err := os.ReadFile(file)
 	if err != nil {
-		t.Error(err)
-		return
+		t.Fatal(err)
 	}
 
 	assert.Equal(t, "firstline\nsecondline\nbase content\n", string(data))
@@ -301,18 +288,12 @@ Ernleȝe test_string æðelen
 `
 
 func TestSearchAndReplace(t *testing.T) {
-	file, err := createTestFile("micro_search_replace_test", srTestStart)
-	if err != nil {
-		t.Error(err)
-		return
-	}
-	defer os.Remove(file)
+	file := createTestFile(t, srTestStart)
 
 	openFile(file)
 
 	if findBuffer(file) == nil {
-		t.Errorf("Could not find buffer %s", file)
-		return
+		t.Fatalf("Could not find buffer %s", file)
 	}
 
 	injectKey(tcell.KeyCtrlE, rune(tcell.KeyCtrlE), tcell.ModCtrl)
@@ -321,10 +302,9 @@ func TestSearchAndReplace(t *testing.T) {
 
 	injectKey(tcell.KeyCtrlS, rune(tcell.KeyCtrlS), tcell.ModCtrl)
 
-	data, err := ioutil.ReadFile(file)
+	data, err := os.ReadFile(file)
 	if err != nil {
-		t.Error(err)
-		return
+		t.Fatal(err)
 	}
 
 	assert.Equal(t, srTest2, string(data))
@@ -337,10 +317,9 @@ func TestSearchAndReplace(t *testing.T) {
 
 	injectKey(tcell.KeyCtrlS, rune(tcell.KeyCtrlS), tcell.ModCtrl)
 
-	data, err = ioutil.ReadFile(file)
+	data, err = os.ReadFile(file)
 	if err != nil {
-		t.Error(err)
-		return
+		t.Fatal(err)
 	}
 
 	assert.Equal(t, srTest3, string(data))

go.mod

@@ -5,26 +5,35 @@ require (
 	github.com/dustin/go-humanize v1.0.0
 	github.com/go-errors/errors v1.0.1
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
-	github.com/mattn/go-isatty v0.0.11
-	github.com/mattn/go-runewidth v0.0.7
+	github.com/mattn/go-isatty v0.0.20
+	github.com/mattn/go-runewidth v0.0.16
+	github.com/micro-editor/json5 v1.0.1-micro
+	github.com/micro-editor/tcell/v2 v2.0.11
+	github.com/micro-editor/terminal v0.0.0-20250324214352-e587e959c6b5
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/sergi/go-diff v1.1.0
 	github.com/stretchr/testify v1.4.0
-	github.com/yuin/gopher-lua v0.0.0-20191220021717-ab39c6098bdb
+	github.com/yuin/gopher-lua v1.1.1
 	github.com/zyedidia/clipper v0.1.1
 	github.com/zyedidia/glob v0.0.0-20170209203856-dd4023a66dc3
-	github.com/zyedidia/json5 v0.0.0-20200102012142-2da050b1a98d
-	github.com/zyedidia/tcell/v2 v2.0.10 // indirect
-	github.com/zyedidia/terminal v0.0.0-20230315200948-4b3bcf6dddef
-	golang.org/x/text v0.3.8
+	golang.org/x/text v0.4.0
 	gopkg.in/yaml.v2 v2.2.8
-	layeh.com/gopher-luar v1.0.7
+	layeh.com/gopher-luar v1.0.11
 )
 
-replace github.com/kballard/go-shellquote => github.com/zyedidia/go-shellquote v0.0.0-20200613203517-eccd813c0655
+require (
+	github.com/creack/pty v1.1.18 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/gdamore/encoding v1.0.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.0.3 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
+	github.com/zyedidia/poller v1.0.1 // indirect
+	golang.org/x/sys v0.28.0 // indirect
+)
 
-replace github.com/mattn/go-runewidth => github.com/zyedidia/go-runewidth v0.0.12
+replace github.com/kballard/go-shellquote => github.com/micro-editor/go-shellquote v0.0.0-20250101105543-feb6c39314f5
 
-replace layeh.com/gopher-luar => github.com/layeh/gopher-luar v1.0.7
+replace layeh.com/gopher-luar v1.0.11 => github.com/layeh/gopher-luar v1.0.11
 
-go 1.16
+go 1.19

go.sum

@@ -19,84 +19,58 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/layeh/gopher-luar v1.0.7 h1:wnfZhYiJM748y1A4qYBfcFeMY9HWbdERny+ZL0f/jWc=
-github.com/layeh/gopher-luar v1.0.7/go.mod h1:TPnIVCZ2RJBndm7ohXyaqfhzjlZ+OA2SZR/YwL8tECk=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/layeh/gopher-luar v1.0.11 h1:ss6t9OtykOiETBScJylSMPhuYAtOmpH5rSX10/wCcis=
+github.com/layeh/gopher-luar v1.0.11/go.mod h1:TPnIVCZ2RJBndm7ohXyaqfhzjlZ+OA2SZR/YwL8tECk=
 github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tWFlaaUAac=
 github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
-github.com/mattn/go-isatty v0.0.11 h1:FxPOTFNqGkuDUGi3H/qkUbQO4ZiBa2brKq5r0l8TGeM=
-github.com/mattn/go-isatty v0.0.11/go.mod h1:PhnuNfih5lzO57/f3n+odYbM4JtupLOxQOAqxQCu2WE=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
+github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/micro-editor/go-shellquote v0.0.0-20250101105543-feb6c39314f5 h1:D7BPnsedXiKo/e8RTFX419/52ICNhU8UKPQGZ/0yiLc=
+github.com/micro-editor/go-shellquote v0.0.0-20250101105543-feb6c39314f5/go.mod h1:zaPgW/fDiW4MUfEwxpC+GB/bhvX44NJaNHmRAC9auHQ=
+github.com/micro-editor/json5 v1.0.1-micro h1:5Y4MuzhkmW0sQQNPvrIVevIOKi557qsznwjRr4iq1AI=
+github.com/micro-editor/json5 v1.0.1-micro/go.mod h1:cmlPHZ1JKOXNse0/3zwwKj/GUpzAVkzx4lZDkpHl4q0=
+github.com/micro-editor/tcell/v2 v2.0.11 h1:USjdpBSmbocx2yPARbY19KcUSj+ZerScrdmBqGjzoX4=
+github.com/micro-editor/tcell/v2 v2.0.11/go.mod h1:kVYk6NOwYJrboL/7IA7cCupk4o2NzyF/0UMLjeEJN/s=
+github.com/micro-editor/terminal v0.0.0-20250324214352-e587e959c6b5 h1:czSkYUNmHuWS2lv8VreufENEXZNOCGZcXd744YKf8yM=
+github.com/micro-editor/terminal v0.0.0-20250324214352-e587e959c6b5/go.mod h1:OszIG7ockt4osicVHq6gI2QmV4PBDK6H5/Bj8GDGv4Q=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/rivo/uniseg v0.1.0 h1:+2KBaVoUmb9XzDsrx/Ct0W/EYOSFf/nWTauy++DprtY=
-github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/robertkrimen/otto v0.2.1 h1:FVP0PJ0AHIjC+N4pKCG9yCDz6LHNPCwi/GKID5pGGF0=
 github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/xo/terminfo v0.0.0-20200218205459-454e5b68f9e8 h1:woqigIZtZUZxws1zZA99nAvuz2mQrxtWsuZSR9c8I/A=
 github.com/xo/terminfo v0.0.0-20200218205459-454e5b68f9e8/go.mod h1:6Yhx5ZJl5942QrNRWLwITArVT9okUXc5c3brgWJMoDc=
-github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 github.com/yuin/gopher-lua v0.0.0-20190206043414-8bfc7677f583/go.mod h1:gqRgreBUhTSL0GeU64rtZ3Uq3wtjOa/TB2YfrtkCbVQ=
-github.com/yuin/gopher-lua v0.0.0-20191220021717-ab39c6098bdb h1:ZkM6LRnq40pR1Ox0hTHlnpkcOTuFIDQpZ1IN8rKKhX0=
-github.com/yuin/gopher-lua v0.0.0-20191220021717-ab39c6098bdb/go.mod h1:gqRgreBUhTSL0GeU64rtZ3Uq3wtjOa/TB2YfrtkCbVQ=
+github.com/yuin/gopher-lua v1.1.1 h1:kYKnWBjvbNP4XLT3+bPEwAXJx262OhaHDWDVOPjL46M=
+github.com/yuin/gopher-lua v1.1.1/go.mod h1:GBR0iDaNXjAgGg9zfCvksxSRnQx76gclCIb7kdAd1Pw=
 github.com/zyedidia/clipper v0.1.1 h1:HBgguFNDq/QmSQKBnhy4sMKzILINr139VEgAhftOUTw=
 github.com/zyedidia/clipper v0.1.1/go.mod h1:7YApPNiiTZTXdKKZG92G50qj6mnWEX975Sdu65J7YpQ=
 github.com/zyedidia/glob v0.0.0-20170209203856-dd4023a66dc3 h1:oMHjjTLfGXVuyOQBYj5/td9WC0mw4g1xDBPovIqmHew=
 github.com/zyedidia/glob v0.0.0-20170209203856-dd4023a66dc3/go.mod h1:YKbIYP//Eln8eDgAJGI3IDvR3s4Tv9Z9TGIOumiyQ5c=
-github.com/zyedidia/go-runewidth v0.0.12 h1:aHWj8qL3aH7caRzoPBJXe1pEaZBXHpKtfTuiBo5p74Q=
-github.com/zyedidia/go-runewidth v0.0.12/go.mod h1:vF8djYdLmG8BJaUZ4CznFYCJ3pFR8m4B4VinTvTTarU=
-github.com/zyedidia/go-shellquote v0.0.0-20200613203517-eccd813c0655 h1:Z3RhH6hvcSx7eX6Q/pP6YVsgea/1eMDG99vtWwi3nK4=
-github.com/zyedidia/go-shellquote v0.0.0-20200613203517-eccd813c0655/go.mod h1:1sTqqO+kcYzZp43M5VsJe1tns9IzlSeC9jB6c2+o/5Y=
-github.com/zyedidia/json5 v0.0.0-20200102012142-2da050b1a98d h1:zmDMkh22zXOB7gz8jFaI4GpI7llsPgzm38/jG0UgxjE=
-github.com/zyedidia/json5 v0.0.0-20200102012142-2da050b1a98d/go.mod h1:NDJSTTYWivnza6zkRapeX2/LwhKPEMQ7bJxqgDVT78I=
 github.com/zyedidia/poller v1.0.1 h1:Tt9S3AxAjXwWGNiC2TUdRJkQDZSzCBNVQ4xXiQ7440s=
 github.com/zyedidia/poller v1.0.1/go.mod h1:vZXJOHGDcuK08GXhF6IAY0ZFd2WcgOR5DOTp84Uk5eE=
-github.com/zyedidia/tcell/v2 v2.0.9 h1:FxXRkE62N0GPHES7EMLtp2rteYqC9r1kVid8vJN1kOE=
-github.com/zyedidia/tcell/v2 v2.0.9/go.mod h1:i4NNlquIQXFeNecrOgxDQQJdu+7LmTi3g62asvmwUws=
-github.com/zyedidia/tcell/v2 v2.0.10-0.20221007181625-f562052bccb8 h1:53ULv4mmLyQDnqbjVxanckP57WSreWHwTmlLJrJEutY=
-github.com/zyedidia/tcell/v2 v2.0.10-0.20221007181625-f562052bccb8/go.mod h1:i4NNlquIQXFeNecrOgxDQQJdu+7LmTi3g62asvmwUws=
-github.com/zyedidia/tcell/v2 v2.0.10-0.20230320201625-54f6acdada4a h1:W4TWa++Wk6uRGxZoxr2nPX1TpIEl+Wxv0mTtocG4TYc=
-github.com/zyedidia/tcell/v2 v2.0.10-0.20230320201625-54f6acdada4a/go.mod h1:i4NNlquIQXFeNecrOgxDQQJdu+7LmTi3g62asvmwUws=
-github.com/zyedidia/tcell/v2 v2.0.10-0.20230831153116-061c5b2c7260 h1:SCAmAacT5BxZsmOFdFy5zwwi6nj1MjA60gydjKdTgXo=
-github.com/zyedidia/tcell/v2 v2.0.10-0.20230831153116-061c5b2c7260/go.mod h1:i4NNlquIQXFeNecrOgxDQQJdu+7LmTi3g62asvmwUws=
-github.com/zyedidia/tcell/v2 v2.0.10 h1:6fbbYAx/DYc9A//4jU1OeBrxtc9qJxYCZXCtGQbtTWU=
-github.com/zyedidia/tcell/v2 v2.0.10/go.mod h1:i4NNlquIQXFeNecrOgxDQQJdu+7LmTi3g62asvmwUws=
-github.com/zyedidia/terminal v0.0.0-20230315200948-4b3bcf6dddef h1:LeB4Qs0Tss4r/Qh8pfsTTqagDYHysfKJLYzAH3MVfu0=
-github.com/zyedidia/terminal v0.0.0-20230315200948-4b3bcf6dddef/go.mod h1:zeb8MJdcCObFKVvur3n2B4BANIPuo2Q8r4iiNs9Enx0=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190204203706-41f3e6584952/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
+golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
-golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/text v0.4.0 h1:BrVqGRd7+k1DiOgtnFvAkoQEWQvBc25ouMJM6429SFg=
+golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/sourcemap.v1 v1.0.5 h1:inv58fC9f9J3TK2Y2R1NPntXEn3/wjWHkonhIUODNTI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=

internal/action/actions.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	shellquote "github.com/kballard/go-shellquote"
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/clipboard"
 	"github.com/zyedidia/micro/v2/internal/config"
@@ -18,7 +19,6 @@ import (
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/shell"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"github.com/zyedidia/tcell/v2"
 )
 
 // ScrollUp is not an action
@@ -46,6 +46,14 @@ func (h *BufPane) ScrollAdjust() {
 	h.SetView(v)
 }
 
+// ScrollReachedEnd returns true if the view is at the end of the buffer,
+// i.e. the last line of the buffer is in the view.
+func (h *BufPane) ScrollReachedEnd() bool {
+	v := h.GetView()
+	end := h.SLocFromLoc(h.Buf.End())
+	return h.Diff(v.StartLine, end) < h.BufView().Height
+}
+
 // MousePress is the event that should happen when a normal click happens
 // This is almost always bound to left click
 func (h *BufPane) MousePress(e *tcell.EventMouse) bool {
@@ -65,12 +73,12 @@ func (h *BufPane) MousePress(e *tcell.EventMouse) bool {
 		h.Cursor.Loc = mouseLoc
 	}
 	if time.Since(h.lastClickTime)/time.Millisecond < config.DoubleClickThreshold && (mouseLoc.X == h.lastLoc.X && mouseLoc.Y == h.lastLoc.Y) {
-		if h.doubleClick {
+		if h.DoubleClick {
 			// Triple click
 			h.lastClickTime = time.Now()
 
-			h.tripleClick = true
-			h.doubleClick = false
+			h.TripleClick = true
+			h.DoubleClick = false
 
 			h.Cursor.SelectLine()
 			h.Cursor.CopySelection(clipboard.PrimaryReg)
@@ -78,15 +86,15 @@ func (h *BufPane) MousePress(e *tcell.EventMouse) bool {
 			// Double click
 			h.lastClickTime = time.Now()
 
-			h.doubleClick = true
-			h.tripleClick = false
+			h.DoubleClick = true
+			h.TripleClick = false
 
 			h.Cursor.SelectWord()
 			h.Cursor.CopySelection(clipboard.PrimaryReg)
 		}
 	} else {
-		h.doubleClick = false
-		h.tripleClick = false
+		h.DoubleClick = false
+		h.TripleClick = false
 		h.lastClickTime = time.Now()
 
 		h.Cursor.OrigSelection[0] = h.Cursor.Loc
@@ -108,9 +116,9 @@ func (h *BufPane) MouseDrag(e *tcell.EventMouse) bool {
 	}
 	h.Cursor.Loc = h.LocFromVisual(buffer.Loc{mx, my})
 
-	if h.tripleClick {
+	if h.TripleClick {
 		h.Cursor.AddLineToSelection()
-	} else if h.doubleClick {
+	} else if h.DoubleClick {
 		h.Cursor.AddWordToSelection()
 	} else {
 		h.Cursor.SelectTo(h.Cursor.Loc)
@@ -127,7 +135,7 @@ func (h *BufPane) MouseRelease(e *tcell.EventMouse) bool {
 	// that doesn't support mouse motion events. But when the mouse click is
 	// within the scroll margin, that would cause a scroll and selection
 	// even for a simple mouse click, which is not good.
-	// if !h.doubleClick && !h.tripleClick {
+	// if !h.DoubleClick && !h.TripleClick {
 	// 	mx, my := e.Position()
 	// 	h.Cursor.Loc = h.LocFromVisual(buffer.Loc{mx, my})
 	// 	h.Cursor.SetSelectionEnd(h.Cursor.Loc)
@@ -145,7 +153,7 @@ func (h *BufPane) ScrollUpAction() bool {
 	return true
 }
 
-// ScrollDownAction scrolls the view up
+// ScrollDownAction scrolls the view down
 func (h *BufPane) ScrollDownAction() bool {
 	h.ScrollDown(util.IntOpt(h.Buf.Settings["scrollspeed"]))
 	return true
@@ -160,6 +168,52 @@ func (h *BufPane) Center() bool {
 	return true
 }
 
+// CursorToViewTop moves the cursor to the top of the view,
+// offset by scrollmargin unless at the beginning or end of the file
+func (h *BufPane) CursorToViewTop() bool {
+	v := h.GetView()
+	h.Buf.ClearCursors()
+	scrollmargin := int(h.Buf.Settings["scrollmargin"].(float64))
+	bStart := display.SLoc{0, 0}
+	if v.StartLine == bStart {
+		scrollmargin = 0
+	}
+	h.Cursor.GotoLoc(h.LocFromVLoc(display.VLoc{
+		SLoc:    h.Scroll(v.StartLine, scrollmargin),
+		VisualX: 0,
+	}))
+	return true
+}
+
+// CursorToViewCenter moves the cursor to the center of the view
+func (h *BufPane) CursorToViewCenter() bool {
+	v := h.GetView()
+	h.Buf.ClearCursors()
+	h.Cursor.GotoLoc(h.LocFromVLoc(display.VLoc{
+		SLoc:    h.Scroll(v.StartLine, h.BufView().Height/2),
+		VisualX: 0,
+	}))
+	return true
+}
+
+// CursorToViewBottom moves the cursor to the bottom of the view,
+// offset by scrollmargin unless at the beginning or end of the file
+func (h *BufPane) CursorToViewBottom() bool {
+	v := h.GetView()
+	h.Buf.ClearCursors()
+	scrollmargin := int(h.Buf.Settings["scrollmargin"].(float64))
+	bEnd := h.SLocFromLoc(h.Buf.End())
+	lastLine := h.Scroll(v.StartLine, h.BufView().Height-1)
+	if lastLine == bEnd {
+		scrollmargin = 0
+	}
+	h.Cursor.GotoLoc(h.LocFromVLoc(display.VLoc{
+		SLoc:    h.Scroll(lastLine, -scrollmargin),
+		VisualX: 0,
+	}))
+	return true
+}
+
 // MoveCursorUp is not an action
 func (h *BufPane) MoveCursorUp(n int) {
 	if !h.Buf.Settings["softwrap"].(bool) {
@@ -170,10 +224,10 @@ func (h *BufPane) MoveCursorUp(n int) {
 		if sloc == vloc.SLoc {
 			// we are at the beginning of buffer
 			h.Cursor.Loc = h.Buf.Start()
-			h.Cursor.LastVisualX = 0
+			h.Cursor.StoreVisualX()
 		} else {
 			vloc.SLoc = sloc
-			vloc.VisualX = h.Cursor.LastVisualX
+			vloc.VisualX = h.Cursor.LastWrappedVisualX
 			h.Cursor.Loc = h.LocFromVLoc(vloc)
 		}
 	}
@@ -189,11 +243,10 @@ func (h *BufPane) MoveCursorDown(n int) {
 		if sloc == vloc.SLoc {
 			// we are at the end of buffer
 			h.Cursor.Loc = h.Buf.End()
-			vloc = h.VLocFromLoc(h.Cursor.Loc)
-			h.Cursor.LastVisualX = vloc.VisualX
+			h.Cursor.StoreVisualX()
 		} else {
 			vloc.SLoc = sloc
-			vloc.VisualX = h.Cursor.LastVisualX
+			vloc.VisualX = h.Cursor.LastWrappedVisualX
 			h.Cursor.Loc = h.LocFromVLoc(vloc)
 		}
 	}
@@ -209,8 +262,13 @@ func (h *BufPane) CursorUp() bool {
 
 // CursorDown moves the cursor down
 func (h *BufPane) CursorDown() bool {
+	selectionEndNewline := h.Cursor.HasSelection() && h.Cursor.CurSelection[1].X == 0
 	h.Cursor.Deselect(false)
+	if selectionEndNewline {
+		h.Cursor.Start()
+	} else {
 		h.MoveCursorDown(1)
+	}
 	h.Relocate()
 	return true
 }
@@ -244,7 +302,6 @@ func (h *BufPane) CursorLeft() bool {
 func (h *BufPane) CursorRight() bool {
 	if h.Cursor.HasSelection() {
 		h.Cursor.Deselect(false)
-		h.Cursor.Right()
 	} else {
 		tabstospaces := h.Buf.Settings["tabstospaces"].(bool)
 		tabmovement := h.Buf.Settings["tabmovement"].(bool)
@@ -657,7 +714,7 @@ func (h *BufPane) InsertNewline() bool {
 			h.Buf.Remove(buffer.Loc{X: 0, Y: h.Cursor.Y - 1}, buffer.Loc{X: util.CharacterCount(line), Y: h.Cursor.Y - 1})
 		}
 	}
-	h.Cursor.LastVisualX = h.Cursor.GetVisualX()
+	h.Cursor.StoreVisualX()
 	h.Relocate()
 	return true
 }
@@ -687,7 +744,7 @@ func (h *BufPane) Backspace() bool {
 			h.Buf.Remove(loc.Move(-1, h.Buf), loc)
 		}
 	}
-	h.Cursor.LastVisualX = h.Cursor.GetVisualX()
+	h.Cursor.StoreVisualX()
 	h.Relocate()
 	return true
 }
@@ -854,6 +911,11 @@ func (h *BufPane) Autocomplete() bool {
 		return false
 	}
 
+	if b.HasSuggestions {
+		b.CycleAutocomplete(true)
+		return true
+	}
+
 	if h.Cursor.X == 0 {
 		return false
 	}
@@ -864,10 +926,6 @@ func (h *BufPane) Autocomplete() bool {
 		return false
 	}
 
-	if b.HasSuggestions {
-		b.CycleAutocomplete(true)
-		return true
-	}
 	return b.Autocomplete(buffer.BufferComplete)
 }
 
@@ -889,7 +947,7 @@ func (h *BufPane) InsertTab() bool {
 	b := h.Buf
 	indent := b.IndentString(util.IntOpt(b.Settings["tabsize"]))
 	tabBytes := len(indent)
-	bytesUntilIndent := tabBytes - (h.Cursor.GetVisualX() % tabBytes)
+	bytesUntilIndent := tabBytes - (h.Cursor.GetVisualX(false) % tabBytes)
 	b.Insert(h.Cursor.Loc, indent[:bytesUntilIndent])
 	h.Relocate()
 	return true
@@ -946,6 +1004,9 @@ func (h *BufPane) SaveAsCB(action string, callback func()) bool {
 						h.completeAction(action)
 						return
 					}
+				} else {
+					InfoBar.Error(err)
+					return
 				}
 			} else {
 				InfoBar.YNPrompt(
@@ -982,8 +1043,6 @@ func (h *BufPane) saveBufToFile(filename string, action string, callback func())
 				if err != nil {
 					InfoBar.Error(err)
 				} else {
-					h.Buf.Path = filename
-					h.Buf.SetName(filename)
 					InfoBar.Message("Saved " + filename)
 					if callback != nil {
 						callback()
@@ -1008,8 +1067,6 @@ func (h *BufPane) saveBufToFile(filename string, action string, callback func())
 			InfoBar.Error(err)
 		}
 	} else {
-		h.Buf.Path = filename
-		h.Buf.SetName(filename)
 		InfoBar.Message("Saved " + filename)
 		if callback != nil {
 			callback()
@@ -1154,6 +1211,14 @@ func (h *BufPane) FindNext() bool {
 	match, found, err := h.Buf.FindNext(h.Buf.LastSearch, h.Buf.Start(), h.Buf.End(), searchLoc, true, h.Buf.LastSearchRegex)
 	if err != nil {
 		InfoBar.Error(err)
+	} else if found && searchLoc == match[0] && match[0] == match[1] {
+		// skip empty match at present cursor location
+		if searchLoc == h.Buf.End() {
+			searchLoc = h.Buf.Start()
+		} else {
+			searchLoc = searchLoc.Move(1, h.Buf)
+		}
+		match, found, _ = h.Buf.FindNext(h.Buf.LastSearch, h.Buf.Start(), h.Buf.End(), searchLoc, true, h.Buf.LastSearchRegex)
 	}
 	if found {
 		h.Cursor.SetSelectionStart(match[0])
@@ -1183,6 +1248,14 @@ func (h *BufPane) FindPrevious() bool {
 	match, found, err := h.Buf.FindNext(h.Buf.LastSearch, h.Buf.Start(), h.Buf.End(), searchLoc, false, h.Buf.LastSearchRegex)
 	if err != nil {
 		InfoBar.Error(err)
+	} else if found && searchLoc == match[0] && match[0] == match[1] {
+		// skip empty match at present cursor location
+		if searchLoc == h.Buf.Start() {
+			searchLoc = h.Buf.End()
+		} else {
+			searchLoc = searchLoc.Move(-1, h.Buf)
+		}
+		match, found, _ = h.Buf.FindNext(h.Buf.LastSearch, h.Buf.Start(), h.Buf.End(), searchLoc, false, h.Buf.LastSearchRegex)
 	}
 	if found {
 		h.Cursor.SetSelectionStart(match[0])
@@ -1238,101 +1311,189 @@ func (h *BufPane) Redo() bool {
 	return true
 }
 
-// Copy the selection to the system clipboard
-func (h *BufPane) Copy() bool {
+func (h *BufPane) selectLines() int {
 	if h.Cursor.HasSelection() {
-		h.Cursor.CopySelection(clipboard.ClipboardReg)
-		h.freshClip = true
-		InfoBar.Message("Copied selection")
+		start := h.Cursor.CurSelection[0]
+		end := h.Cursor.CurSelection[1]
+		if start.GreaterThan(end) {
+			start, end = end, start
 		}
-	h.Relocate()
-	return true
+		if end.X == 0 {
+			end = end.Move(-1, h.Buf)
 		}
 
-// CopyLine copies the current line to the clipboard
-func (h *BufPane) CopyLine() bool {
-	if h.Cursor.HasSelection() {
-		return false
-	}
-	origLoc := h.Cursor.Loc
-	h.Cursor.SelectLine()
-	h.Cursor.CopySelection(clipboard.ClipboardReg)
-	h.freshClip = true
-	InfoBar.Message("Copied line")
-
 		h.Cursor.Deselect(true)
-	h.Cursor.Loc = origLoc
-	h.Relocate()
-	return true
+		h.Cursor.SetSelectionStart(buffer.Loc{0, start.Y})
+		h.Cursor.SetSelectionEnd(buffer.Loc{0, end.Y + 1})
+	} else {
+		h.Cursor.SelectLine()
 	}
 
-// CutLine cuts the current line to the clipboard
-func (h *BufPane) CutLine() bool {
-	h.Cursor.SelectLine()
+	nlines := h.Cursor.CurSelection[1].Y - h.Cursor.CurSelection[0].Y
+	if nlines == 0 && h.Cursor.HasSelection() {
+		// selected last line and it is not empty
+		nlines++
+	}
+	return nlines
+}
+
+// Copy the selection to the system clipboard
+func (h *BufPane) Copy() bool {
 	if !h.Cursor.HasSelection() {
 		return false
 	}
-	if h.freshClip {
-		if h.Cursor.HasSelection() {
-			if clip, err := clipboard.Read(clipboard.ClipboardReg); err != nil {
-				InfoBar.Error(err)
+	h.Cursor.CopySelection(clipboard.ClipboardReg)
+	h.freshClip = false
+	InfoBar.Message("Copied selection")
+	h.Relocate()
+	return true
+}
+
+// CopyLine copies the current line to the clipboard. If there is a selection,
+// CopyLine copies all the lines that are (fully or partially) in the selection.
+func (h *BufPane) CopyLine() bool {
+	origLoc := h.Cursor.Loc
+	origLastVisualX := h.Cursor.LastVisualX
+	origLastWrappedVisualX := h.Cursor.LastWrappedVisualX
+	origSelection := h.Cursor.CurSelection
+
+	nlines := h.selectLines()
+	if nlines == 0 {
+		return false
+	}
+	h.Cursor.CopySelection(clipboard.ClipboardReg)
+	h.freshClip = false
+	if nlines > 1 {
+		InfoBar.Message(fmt.Sprintf("Copied %d lines", nlines))
 	} else {
-				clipboard.WriteMulti(clip+string(h.Cursor.GetSelection()), clipboard.ClipboardReg, h.Cursor.Num, h.Buf.NumCursors())
+		InfoBar.Message("Copied line")
 	}
-		}
-	} else if time.Since(h.lastCutTime)/time.Second > 10*time.Second || !h.freshClip {
-		h.Copy()
-	}
-	h.freshClip = true
-	h.lastCutTime = time.Now()
-	h.Cursor.DeleteSelection()
-	h.Cursor.ResetSelection()
-	InfoBar.Message("Cut line")
+
+	h.Cursor.Loc = origLoc
+	h.Cursor.LastVisualX = origLastVisualX
+	h.Cursor.LastWrappedVisualX = origLastWrappedVisualX
+	h.Cursor.CurSelection = origSelection
 	h.Relocate()
 	return true
 }
 
 // Cut the selection to the system clipboard
 func (h *BufPane) Cut() bool {
-	if h.Cursor.HasSelection() {
+	if !h.Cursor.HasSelection() {
+		return false
+	}
 	h.Cursor.CopySelection(clipboard.ClipboardReg)
 	h.Cursor.DeleteSelection()
 	h.Cursor.ResetSelection()
-		h.freshClip = true
+	h.freshClip = false
 	InfoBar.Message("Cut selection")
 
 	h.Relocate()
 	return true
 }
-	return h.CutLine()
-}
 
-// DuplicateLine duplicates the current line or selection
-func (h *BufPane) DuplicateLine() bool {
-	var infoMessage = "Duplicated line"
-	if h.Cursor.HasSelection() {
-		infoMessage = "Duplicated selection"
-		h.Buf.Insert(h.Cursor.CurSelection[1], string(h.Cursor.GetSelection()))
+// CutLine cuts the current line to the clipboard. If there is a selection,
+// CutLine cuts all the lines that are (fully or partially) in the selection.
+func (h *BufPane) CutLine() bool {
+	nlines := h.selectLines()
+	if nlines == 0 {
+		return false
+	}
+	totalLines := nlines
+	if h.freshClip {
+		if clip, err := clipboard.Read(clipboard.ClipboardReg); err != nil {
+			InfoBar.Error(err)
+			return false
 		} else {
-		h.Cursor.End()
-		h.Buf.Insert(h.Cursor.Loc, "\n"+string(h.Buf.LineBytes(h.Cursor.Y)))
-		// h.Cursor.Right()
+			clipboard.WriteMulti(clip+string(h.Cursor.GetSelection()), clipboard.ClipboardReg, h.Cursor.Num, h.Buf.NumCursors())
+			totalLines = strings.Count(clip, "\n") + nlines
+		}
+	} else {
+		h.Cursor.CopySelection(clipboard.ClipboardReg)
+	}
+	h.freshClip = true
+	h.Cursor.DeleteSelection()
+	h.Cursor.ResetSelection()
+	h.Cursor.StoreVisualX()
+	if totalLines > 1 {
+		InfoBar.Message(fmt.Sprintf("Cut %d lines", totalLines))
+	} else {
+		InfoBar.Message("Cut line")
 	}
-
-	InfoBar.Message(infoMessage)
 	h.Relocate()
 	return true
 }
 
-// DeleteLine deletes the current line
-func (h *BufPane) DeleteLine() bool {
-	h.Cursor.SelectLine()
+// Duplicate the selection
+func (h *BufPane) Duplicate() bool {
 	if !h.Cursor.HasSelection() {
 		return false
 	}
+	h.Buf.Insert(h.Cursor.CurSelection[1], string(h.Cursor.GetSelection()))
+	InfoBar.Message("Duplicated selection")
+	h.Relocate()
+	return true
+}
+
+// DuplicateLine duplicates the current line. If there is a selection, DuplicateLine
+// duplicates all the lines that are (fully or partially) in the selection.
+func (h *BufPane) DuplicateLine() bool {
+	if h.Cursor.HasSelection() {
+		origLoc := h.Cursor.Loc
+		origLastVisualX := h.Cursor.LastVisualX
+		origLastWrappedVisualX := h.Cursor.LastWrappedVisualX
+		origSelection := h.Cursor.CurSelection
+
+		start := h.Cursor.CurSelection[0]
+		end := h.Cursor.CurSelection[1]
+		if start.GreaterThan(end) {
+			start, end = end, start
+		}
+		if end.X == 0 {
+			end = end.Move(-1, h.Buf)
+		}
+
+		h.Cursor.Deselect(true)
+		h.Cursor.Loc = end
+		h.Cursor.End()
+		for y := start.Y; y <= end.Y; y++ {
+			h.Buf.Insert(h.Cursor.Loc, "\n"+string(h.Buf.LineBytes(y)))
+		}
+
+		h.Cursor.Loc = origLoc
+		h.Cursor.LastVisualX = origLastVisualX
+		h.Cursor.LastWrappedVisualX = origLastWrappedVisualX
+		h.Cursor.CurSelection = origSelection
+
+		if start.Y < end.Y {
+			InfoBar.Message(fmt.Sprintf("Duplicated %d lines", end.Y-start.Y+1))
+		} else {
+			InfoBar.Message("Duplicated line")
+		}
+	} else {
+		h.Cursor.End()
+		h.Buf.Insert(h.Cursor.Loc, "\n"+string(h.Buf.LineBytes(h.Cursor.Y)))
+		InfoBar.Message("Duplicated line")
+	}
+	h.Relocate()
+	return true
+}
+
+// DeleteLine deletes the current line. If there is a selection, DeleteLine
+// deletes all the lines that are (fully or partially) in the selection.
+func (h *BufPane) DeleteLine() bool {
+	nlines := h.selectLines()
+	if nlines == 0 {
+		return false
+	}
 	h.Cursor.DeleteSelection()
 	h.Cursor.ResetSelection()
+	h.Cursor.StoreVisualX()
+	if nlines > 1 {
+		InfoBar.Message(fmt.Sprintf("Deleted %d lines", nlines))
+	} else {
 		InfoBar.Message("Deleted line")
+	}
 	h.Relocate()
 	return true
 }
@@ -1536,63 +1697,84 @@ func (h *BufPane) End() bool {
 
 // PageUp scrolls the view up a page
 func (h *BufPane) PageUp() bool {
-	h.ScrollUp(h.BufView().Height)
+	pageOverlap := int(h.Buf.Settings["pageoverlap"].(float64))
+	h.ScrollUp(h.BufView().Height - pageOverlap)
 	return true
 }
 
 // PageDown scrolls the view down a page
 func (h *BufPane) PageDown() bool {
-	h.ScrollDown(h.BufView().Height)
+	pageOverlap := int(h.Buf.Settings["pageoverlap"].(float64))
+	h.ScrollDown(h.BufView().Height - pageOverlap)
 	h.ScrollAdjust()
 	return true
 }
 
 // SelectPageUp selects up one page
 func (h *BufPane) SelectPageUp() bool {
+	pageOverlap := int(h.Buf.Settings["pageoverlap"].(float64))
+	scrollAmount := h.BufView().Height - pageOverlap
 	if !h.Cursor.HasSelection() {
 		h.Cursor.OrigSelection[0] = h.Cursor.Loc
 	}
-	h.MoveCursorUp(h.BufView().Height)
+	h.MoveCursorUp(scrollAmount)
 	h.Cursor.SelectTo(h.Cursor.Loc)
+	if h.Cursor.Num == 0 {
+		h.ScrollUp(scrollAmount)
+	}
 	h.Relocate()
 	return true
 }
 
 // SelectPageDown selects down one page
 func (h *BufPane) SelectPageDown() bool {
+	pageOverlap := int(h.Buf.Settings["pageoverlap"].(float64))
+	scrollAmount := h.BufView().Height - pageOverlap
 	if !h.Cursor.HasSelection() {
 		h.Cursor.OrigSelection[0] = h.Cursor.Loc
 	}
-	h.MoveCursorDown(h.BufView().Height)
+	h.MoveCursorDown(scrollAmount)
 	h.Cursor.SelectTo(h.Cursor.Loc)
+	if h.Cursor.Num == 0 && !h.ScrollReachedEnd() {
+		h.ScrollDown(scrollAmount)
+		h.ScrollAdjust()
+	}
 	h.Relocate()
 	return true
 }
 
-// CursorPageUp places the cursor a page up
+// CursorPageUp places the cursor a page up,
+// moving the view to keep cursor at the same relative position in the view
 func (h *BufPane) CursorPageUp() bool {
 	h.Cursor.Deselect(true)
-
-	if h.Cursor.HasSelection() {
-		h.Cursor.Loc = h.Cursor.CurSelection[0]
-		h.Cursor.ResetSelection()
-		h.Cursor.StoreVisualX()
+	pageOverlap := int(h.Buf.Settings["pageoverlap"].(float64))
+	scrollAmount := h.BufView().Height - pageOverlap
+	h.MoveCursorUp(scrollAmount)
+	if h.Cursor.Num == 0 {
+		h.ScrollUp(scrollAmount)
 	}
-	h.MoveCursorUp(h.BufView().Height)
 	h.Relocate()
 	return true
 }
 
-// CursorPageDown places the cursor a page up
+// CursorPageDown places the cursor a page down,
+// moving the view to keep cursor at the same relative position in the view
 func (h *BufPane) CursorPageDown() bool {
+	selectionEndNewline := h.Cursor.HasSelection() && h.Cursor.CurSelection[1].X == 0
 	h.Cursor.Deselect(false)
-
-	if h.Cursor.HasSelection() {
-		h.Cursor.Loc = h.Cursor.CurSelection[1]
-		h.Cursor.ResetSelection()
-		h.Cursor.StoreVisualX()
+	pageOverlap := int(h.Buf.Settings["pageoverlap"].(float64))
+	scrollAmount := h.BufView().Height - pageOverlap
+	if selectionEndNewline {
+		scrollAmount--
+	}
+	h.MoveCursorDown(scrollAmount)
+	if h.Cursor.Num == 0 && !h.ScrollReachedEnd() {
+		h.ScrollDown(scrollAmount)
+		h.ScrollAdjust()
+	}
+	if selectionEndNewline {
+		h.Cursor.Start()
 	}
-	h.MoveCursorDown(h.BufView().Height)
 	h.Relocate()
 	return true
 }
@@ -1612,12 +1794,12 @@ func (h *BufPane) HalfPageDown() bool {
 
 // ToggleDiffGutter turns the diff gutter off and on
 func (h *BufPane) ToggleDiffGutter() bool {
-	if !h.Buf.Settings["diffgutter"].(bool) {
-		h.Buf.Settings["diffgutter"] = true
+	diffgutter := !h.Buf.Settings["diffgutter"].(bool)
+	h.Buf.SetOptionNative("diffgutter", diffgutter)
+	if diffgutter {
 		h.Buf.UpdateDiff()
 		InfoBar.Message("Enabled diff gutter")
 	} else {
-		h.Buf.Settings["diffgutter"] = false
 		InfoBar.Message("Disabled diff gutter")
 	}
 	return true
@@ -1625,11 +1807,11 @@ func (h *BufPane) ToggleDiffGutter() bool {
 
 // ToggleRuler turns line numbers off and on
 func (h *BufPane) ToggleRuler() bool {
-	if !h.Buf.Settings["ruler"].(bool) {
-		h.Buf.Settings["ruler"] = true
+	ruler := !h.Buf.Settings["ruler"].(bool)
+	h.Buf.SetOptionNative("ruler", ruler)
+	if ruler {
 		InfoBar.Message("Enabled ruler")
 	} else {
-		h.Buf.Settings["ruler"] = false
 		InfoBar.Message("Disabled ruler")
 	}
 	return true
@@ -1645,7 +1827,8 @@ func (h *BufPane) ToggleHelp() bool {
 	if h.Buf.Type == buffer.BTHelp {
 		h.Quit()
 	} else {
-		h.openHelp("help")
+		hsplit := config.GlobalSettings["helpsplit"] == "hsplit"
+		h.openHelp("help", hsplit, false)
 	}
 	return true
 }
@@ -1681,7 +1864,7 @@ func (h *BufPane) CommandMode() bool {
 
 // ToggleOverwriteMode lets the user toggle the text overwrite mode
 func (h *BufPane) ToggleOverwriteMode() bool {
-	h.isOverwriteMode = !h.isOverwriteMode
+	h.Buf.OverwriteMode = !h.Buf.OverwriteMode
 	return true
 }
 
@@ -1708,11 +1891,11 @@ func (h *BufPane) ClearInfo() bool {
 	return true
 }
 
-// ForceQuit closes the current tab or view even if there are unsaved changes
+// ForceQuit closes the tab or view even if there are unsaved changes
 // (no prompt)
 func (h *BufPane) ForceQuit() bool {
 	h.Buf.Close()
-	if len(MainTab().Panes) > 1 {
+	if len(h.tab.Panes) > 1 {
 		h.Unsplit()
 	} else if len(Tabs.List) > 1 {
 		Tabs.RemoveTab(h.splitID)
@@ -1724,23 +1907,29 @@ func (h *BufPane) ForceQuit() bool {
 	return true
 }
 
+// closePrompt displays a prompt to save the buffer before closing it to proceed
+// with a different action or command
+func (h *BufPane) closePrompt(action string, callback func()) {
+	InfoBar.YNPrompt("Save changes to "+h.Buf.GetName()+" before closing? (y,n,esc)", func(yes, canceled bool) {
+		if !canceled && !yes {
+			callback()
+		} else if !canceled && yes {
+			h.SaveCB(action, callback)
+		}
+	})
+}
+
 // Quit this will close the current tab or view that is open
 func (h *BufPane) Quit() bool {
-	if h.Buf.Modified() {
-		if config.GlobalSettings["autosave"].(float64) > 0 {
+	if h.Buf.Modified() && !h.Buf.Shared() {
+		if config.GlobalSettings["autosave"].(float64) > 0 && h.Buf.Path != "" {
 			// autosave on means we automatically save when quitting
 			h.SaveCB("Quit", func() {
 				h.ForceQuit()
 			})
 		} else {
-			InfoBar.YNPrompt("Save changes to "+h.Buf.GetName()+" before closing? (y,n,esc)", func(yes, canceled bool) {
-				if !canceled && !yes {
+			h.closePrompt("Quit", func() {
 				h.ForceQuit()
-				} else if !canceled && yes {
-					h.SaveCB("Quit", func() {
-						h.ForceQuit()
-					})
-				}
 			})
 		}
 	} else {
@@ -1793,27 +1982,38 @@ func (h *BufPane) AddTab() bool {
 
 // PreviousTab switches to the previous tab in the tab list
 func (h *BufPane) PreviousTab() bool {
-	tabsLen := len(Tabs.List)
-	if tabsLen == 1 {
+	if Tabs.Active() == 0 {
 		return false
 	}
-
-	a := Tabs.Active() + tabsLen
-	Tabs.SetActive((a - 1) % tabsLen)
-
+	Tabs.SetActive(Tabs.Active() - 1)
 	return true
 }
 
 // NextTab switches to the next tab in the tab list
 func (h *BufPane) NextTab() bool {
-	tabsLen := len(Tabs.List)
-	if tabsLen == 1 {
+	if Tabs.Active() == len(Tabs.List)-1 {
 		return false
 	}
+	Tabs.SetActive(Tabs.Active() + 1)
+	return true
+}
 
-	a := Tabs.Active()
-	Tabs.SetActive((a + 1) % tabsLen)
+// FirstTab switches to the first tab in the tab list
+func (h *BufPane) FirstTab() bool {
+	if Tabs.Active() == 0 {
+		return false
+	}
+	Tabs.SetActive(0)
+	return true
+}
 
+// LastTab switches to the last tab in the tab list
+func (h *BufPane) LastTab() bool {
+	lastTabIndex := len(Tabs.List) - 1
+	if Tabs.Active() == lastTabIndex {
+		return false
+	}
+	Tabs.SetActive(lastTabIndex)
 	return true
 }
 
@@ -1848,36 +2048,38 @@ func (h *BufPane) Unsplit() bool {
 
 // NextSplit changes the view to the next split
 func (h *BufPane) NextSplit() bool {
-	if len(h.tab.Panes) == 1 {
+	if h.tab.active == len(h.tab.Panes)-1 {
 		return false
 	}
-
-	a := h.tab.active
-	if a < len(h.tab.Panes)-1 {
-		a++
-	} else {
-		a = 0
-	}
-
-	h.tab.SetActive(a)
-
+	h.tab.SetActive(h.tab.active + 1)
 	return true
 }
 
 // PreviousSplit changes the view to the previous split
 func (h *BufPane) PreviousSplit() bool {
-	if len(h.tab.Panes) == 1 {
+	if h.tab.active == 0 {
 		return false
 	}
-
-	a := h.tab.active
-	if a > 0 {
-		a--
-	} else {
-		a = len(h.tab.Panes) - 1
+	h.tab.SetActive(h.tab.active - 1)
+	return true
 }
-	h.tab.SetActive(a)
 
+// FirstSplit changes the view to the first split
+func (h *BufPane) FirstSplit() bool {
+	if h.tab.active == 0 {
+		return false
+	}
+	h.tab.SetActive(0)
+	return true
+}
+
+// LastSplit changes the view to the last split
+func (h *BufPane) LastSplit() bool {
+	lastPaneIdx := len(h.tab.Panes) - 1
+	if h.tab.active == lastPaneIdx {
+		return false
+	}
+	h.tab.SetActive(lastPaneIdx)
 	return true
 }
 
@@ -1955,11 +2157,17 @@ func (h *BufPane) SpawnMultiCursor() bool {
 	return true
 }
 
+// SpawnCursorAtLoc spawns a new cursor at a location and merges the cursors
+func (h *BufPane) SpawnCursorAtLoc(loc buffer.Loc) *buffer.Cursor {
+	c := buffer.NewCursor(h.Buf, loc)
+	h.Buf.AddCursor(c)
+	h.Buf.MergeCursors()
+	return c
+}
+
 // SpawnMultiCursorUpN is not an action
 func (h *BufPane) SpawnMultiCursorUpN(n int) bool {
 	lastC := h.Buf.GetCursor(h.Buf.NumCursors() - 1)
-	var c *buffer.Cursor
-	if !h.Buf.Settings["softwrap"].(bool) {
 	if n > 0 && lastC.Y == 0 {
 		return false
 	}
@@ -1969,24 +2177,11 @@ func (h *BufPane) SpawnMultiCursorUpN(n int) bool {
 
 	h.Buf.DeselectCursors()
 
-		c = buffer.NewCursor(h.Buf, buffer.Loc{lastC.X, lastC.Y - n})
+	c := buffer.NewCursor(h.Buf, buffer.Loc{lastC.X, lastC.Y - n})
 	c.LastVisualX = lastC.LastVisualX
+	c.LastWrappedVisualX = lastC.LastWrappedVisualX
 	c.X = c.GetCharPosInLine(h.Buf.LineBytes(c.Y), c.LastVisualX)
 	c.Relocate()
-	} else {
-		vloc := h.VLocFromLoc(lastC.Loc)
-		sloc := h.Scroll(vloc.SLoc, -n)
-		if sloc == vloc.SLoc {
-			return false
-		}
-
-		h.Buf.DeselectCursors()
-
-		vloc.SLoc = sloc
-		vloc.VisualX = lastC.LastVisualX
-		c = buffer.NewCursor(h.Buf, h.LocFromVLoc(vloc))
-		c.LastVisualX = lastC.LastVisualX
-	}
 
 	h.Buf.AddCursor(c)
 	h.Buf.SetCurCursor(h.Buf.NumCursors() - 1)
@@ -2068,14 +2263,16 @@ func (h *BufPane) MouseMultiCursor(e *tcell.EventMouse) bool {
 	return true
 }
 
-// SkipMultiCursor moves the current multiple cursor to the next available position
-func (h *BufPane) SkipMultiCursor() bool {
+func (h *BufPane) skipMultiCursor(forward bool) bool {
 	lastC := h.Buf.GetCursor(h.Buf.NumCursors() - 1)
 	if !lastC.HasSelection() {
 		return false
 	}
 	sel := lastC.GetSelection()
 	searchStart := lastC.CurSelection[1]
+	if !forward {
+		searchStart = lastC.CurSelection[0]
+	}
 
 	search := string(sel)
 	search = regexp.QuoteMeta(search)
@@ -2083,7 +2280,7 @@ func (h *BufPane) SkipMultiCursor() bool {
 		search = "\\b" + search + "\\b"
 	}
 
-	match, found, err := h.Buf.FindNext(search, h.Buf.Start(), h.Buf.End(), searchStart, true, true)
+	match, found, err := h.Buf.FindNext(search, h.Buf.Start(), h.Buf.End(), searchStart, forward, true)
 	if err != nil {
 		InfoBar.Error(err)
 	}
@@ -2103,6 +2300,16 @@ func (h *BufPane) SkipMultiCursor() bool {
 	return true
 }
 
+// SkipMultiCursor moves the current multiple cursor to the next available position
+func (h *BufPane) SkipMultiCursor() bool {
+	return h.skipMultiCursor(true)
+}
+
+// SkipMultiCursorBack moves the current multiple cursor to the previous available position
+func (h *BufPane) SkipMultiCursorBack() bool {
+	return h.skipMultiCursor(false)
+}
+
 // RemoveMultiCursor removes the latest multiple cursor
 func (h *BufPane) RemoveMultiCursor() bool {
 	if h.Buf.NumCursors() > 1 {

internal/action/actions_other.go

@@ -1,4 +1,4 @@
-// +build plan9 nacl windows
+//go:build plan9 || nacl || windows
 
 package action
 

internal/action/actions_posix.go

@@ -1,4 +1,4 @@
-// +build linux darwin dragonfly solaris openbsd netbsd freebsd
+//go:build linux || darwin || dragonfly || solaris || openbsd || netbsd || freebsd
 
 package action
 

internal/action/bindings.go

@@ -4,17 +4,18 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io/fs"
 	"os"
 	"path/filepath"
 	"regexp"
 	"strings"
 	"unicode"
 
-	"github.com/zyedidia/json5"
+	"github.com/micro-editor/json5"
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/screen"
-	"github.com/zyedidia/tcell/v2"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 var Binder = map[string]func(e Event, action string){
@@ -23,9 +24,13 @@ var Binder = map[string]func(e Event, action string){
 	"terminal": TermMapEvent,
 }
 
+func writeFile(name string, txt []byte) error {
+	return util.SafeWrite(name, txt, false)
+}
+
 func createBindingsIfNotExist(fname string) {
-	if _, e := os.Stat(fname); os.IsNotExist(e) {
-		ioutil.WriteFile(fname, []byte("{}"), 0644)
+	if _, e := os.Stat(fname); errors.Is(e, fs.ErrNotExist) {
+		writeFile(fname, []byte("{}"))
 	}
 }
 
@@ -37,7 +42,7 @@ func InitBindings() {
 	createBindingsIfNotExist(filename)
 
 	if _, e := os.Stat(filename); e == nil {
-		input, err := ioutil.ReadFile(filename)
+		input, err := os.ReadFile(filename)
 		if err != nil {
 			screen.TermMessage("Error reading bindings.json file: " + err.Error())
 			return
@@ -89,7 +94,7 @@ func BindKey(k, v string, bind func(e Event, a string)) {
 	}
 
 	if strings.HasPrefix(k, "\x1b") {
-		screen.Screen.RegisterRawSeq(k)
+		screen.RegisterRawSeq(k)
 	}
 
 	bind(event, v)
@@ -265,7 +270,7 @@ func TryBindKey(k, v string, overwrite bool) (bool, error) {
 	filename := filepath.Join(config.ConfigDir, "bindings.json")
 	createBindingsIfNotExist(filename)
 	if _, e = os.Stat(filename); e == nil {
-		input, err := ioutil.ReadFile(filename)
+		input, err := os.ReadFile(filename)
 		if err != nil {
 			return false, errors.New("Error reading bindings.json file: " + err.Error())
 		}
@@ -304,7 +309,8 @@ func TryBindKey(k, v string, overwrite bool) (bool, error) {
 		BindKey(k, v, Binder["buffer"])
 
 		txt, _ := json.MarshalIndent(parsed, "", "    ")
-		return true, ioutil.WriteFile(filename, append(txt, '\n'), 0644)
+		txt = append(txt, '\n')
+		return true, writeFile(filename, txt)
 	}
 	return false, e
 }
@@ -317,7 +323,7 @@ func UnbindKey(k string) error {
 	filename := filepath.Join(config.ConfigDir, "bindings.json")
 	createBindingsIfNotExist(filename)
 	if _, e = os.Stat(filename); e == nil {
-		input, err := ioutil.ReadFile(filename)
+		input, err := os.ReadFile(filename)
 		if err != nil {
 			return errors.New("Error reading bindings.json file: " + err.Error())
 		}
@@ -342,7 +348,7 @@ func UnbindKey(k string) error {
 		}
 
 		if strings.HasPrefix(k, "\x1b") {
-			screen.Screen.UnregisterRawSeq(k)
+			screen.UnregisterRawSeq(k)
 		}
 
 		defaults := DefaultBindings("buffer")
@@ -354,7 +360,8 @@ func UnbindKey(k string) error {
 		}
 
 		txt, _ := json.MarshalIndent(parsed, "", "    ")
-		return ioutil.WriteFile(filename, append(txt, '\n'), 0644)
+		txt = append(txt, '\n')
+		return writeFile(filename, txt)
 	}
 	return e
 }

internal/action/bufpane.go

@@ -6,6 +6,7 @@ import (
 
 	luar "layeh.com/gopher-luar"
 
+	"github.com/micro-editor/tcell/v2"
 	lua "github.com/yuin/gopher-lua"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
@@ -13,7 +14,6 @@ import (
 	ulua "github.com/zyedidia/micro/v2/internal/lua"
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"github.com/zyedidia/tcell/v2"
 )
 
 type BufAction interface{}
@@ -100,9 +100,7 @@ func BufMapEvent(k Event, action string) {
 			break
 		}
 
-		// TODO: fix problem when complex bindings have these
-		// characters (escape them?)
-		idx := strings.IndexAny(action, "&|,")
+		idx := util.IndexAnyUnquoted(action, "&|,")
 		a := action
 		if idx >= 0 {
 			a = action[:idx]
@@ -226,26 +224,21 @@ type BufPane struct {
 	// (possibly multiple) buttons were pressed previously.
 	mousePressed map[MouseEvent]bool
 
-	// We need to keep track of insert key press toggle
-	isOverwriteMode bool
 	// This stores when the last click was
 	// This is useful for detecting double and triple clicks
 	lastClickTime time.Time
 	lastLoc       buffer.Loc
 
-	// lastCutTime stores when the last ctrl+k was issued.
-	// It is used for clearing the clipboard to replace it with fresh cut lines.
-	lastCutTime time.Time
-
-	// freshClip returns true if the clipboard has never been pasted.
+	// freshClip returns true if one or more lines have been cut to the clipboard
+	// and have never been pasted yet.
 	freshClip bool
 
 	// Was the last mouse event actually a double click?
 	// Useful for detecting triple clicks -- if a double click is detected
 	// but the last mouse event was actually a double click, it's a triple click
-	doubleClick bool
+	DoubleClick bool
 	// Same here, just to keep track for mouse move events
-	tripleClick bool
+	TripleClick bool
 
 	// Should the current multiple cursor selection search based on word or
 	// based on selection (false for selection, true for word)
@@ -363,9 +356,6 @@ func (h *BufPane) OpenBuffer(b *buffer.Buffer) {
 	// Set mouseReleased to true because we assume the mouse is not being
 	// pressed when the editor is opened
 	h.resetMouse()
-	// Set isOverwriteMode to false, because we assume we are in the default
-	// mode when editor is opened
-	h.isOverwriteMode = false
 	h.lastClickTime = time.Time{}
 }
 
@@ -644,7 +634,7 @@ func (h *BufPane) DoRuneInsert(r rune) {
 			c.ResetSelection()
 		}
 
-		if h.isOverwriteMode {
+		if h.Buf.OverwriteMode {
 			next := c.Loc
 			next.X++
 			h.Buf.Replace(c.Loc, next, string(r))
@@ -662,20 +652,28 @@ func (h *BufPane) DoRuneInsert(r rune) {
 // VSplitIndex opens the given buffer in a vertical split on the given side.
 func (h *BufPane) VSplitIndex(buf *buffer.Buffer, right bool) *BufPane {
 	e := NewBufPaneFromBuf(buf, h.tab)
-	e.splitID = MainTab().GetNode(h.splitID).VSplit(right)
-	MainTab().Panes = append(MainTab().Panes, e)
-	MainTab().Resize()
-	MainTab().SetActive(len(MainTab().Panes) - 1)
+	e.splitID = h.tab.GetNode(h.splitID).VSplit(right)
+	currentPaneIdx := h.tab.GetPane(h.splitID)
+	if right {
+		currentPaneIdx++
+	}
+	h.tab.AddPane(e, currentPaneIdx)
+	h.tab.Resize()
+	h.tab.SetActive(currentPaneIdx)
 	return e
 }
 
 // HSplitIndex opens the given buffer in a horizontal split on the given side.
 func (h *BufPane) HSplitIndex(buf *buffer.Buffer, bottom bool) *BufPane {
 	e := NewBufPaneFromBuf(buf, h.tab)
-	e.splitID = MainTab().GetNode(h.splitID).HSplit(bottom)
-	MainTab().Panes = append(MainTab().Panes, e)
-	MainTab().Resize()
-	MainTab().SetActive(len(MainTab().Panes) - 1)
+	e.splitID = h.tab.GetNode(h.splitID).HSplit(bottom)
+	currentPaneIdx := h.tab.GetPane(h.splitID)
+	if bottom {
+		currentPaneIdx++
+	}
+	h.tab.AddPane(e, currentPaneIdx)
+	h.tab.Resize()
+	h.tab.SetActive(currentPaneIdx)
 	return e
 }
 
@@ -733,6 +731,9 @@ var BufKeyActions = map[string]BufKeyAction{
 	"CursorRight":               (*BufPane).CursorRight,
 	"CursorStart":               (*BufPane).CursorStart,
 	"CursorEnd":                 (*BufPane).CursorEnd,
+	"CursorToViewTop":           (*BufPane).CursorToViewTop,
+	"CursorToViewCenter":        (*BufPane).CursorToViewCenter,
+	"CursorToViewBottom":        (*BufPane).CursorToViewBottom,
 	"SelectToStart":             (*BufPane).SelectToStart,
 	"SelectToEnd":               (*BufPane).SelectToEnd,
 	"SelectUp":                  (*BufPane).SelectUp,
@@ -780,6 +781,7 @@ var BufKeyActions = map[string]BufKeyAction{
 	"CopyLine":                  (*BufPane).CopyLine,
 	"Cut":                       (*BufPane).Cut,
 	"CutLine":                   (*BufPane).CutLine,
+	"Duplicate":                 (*BufPane).Duplicate,
 	"DuplicateLine":             (*BufPane).DuplicateLine,
 	"DeleteLine":                (*BufPane).DeleteLine,
 	"MoveLinesUp":               (*BufPane).MoveLinesUp,
@@ -824,8 +826,12 @@ var BufKeyActions = map[string]BufKeyAction{
 	"AddTab":                    (*BufPane).AddTab,
 	"PreviousTab":               (*BufPane).PreviousTab,
 	"NextTab":                   (*BufPane).NextTab,
+	"FirstTab":                  (*BufPane).FirstTab,
+	"LastTab":                   (*BufPane).LastTab,
 	"NextSplit":                 (*BufPane).NextSplit,
 	"PreviousSplit":             (*BufPane).PreviousSplit,
+	"FirstSplit":                (*BufPane).FirstSplit,
+	"LastSplit":                 (*BufPane).LastSplit,
 	"Unsplit":                   (*BufPane).Unsplit,
 	"VSplit":                    (*BufPane).VSplitAction,
 	"HSplit":                    (*BufPane).HSplitAction,
@@ -841,6 +847,7 @@ var BufKeyActions = map[string]BufKeyAction{
 	"RemoveMultiCursor":         (*BufPane).RemoveMultiCursor,
 	"RemoveAllMultiCursors":     (*BufPane).RemoveAllMultiCursors,
 	"SkipMultiCursor":           (*BufPane).SkipMultiCursor,
+	"SkipMultiCursorBack":       (*BufPane).SkipMultiCursorBack,
 	"JumpToMatchingBrace":       (*BufPane).JumpToMatchingBrace,
 	"JumpLine":                  (*BufPane).JumpLine,
 	"Deselect":                  (*BufPane).Deselect,
@@ -907,6 +914,7 @@ var MultiActions = map[string]bool{
 	"Copy":                      true,
 	"Cut":                       true,
 	"CutLine":                   true,
+	"Duplicate":                 true,
 	"DuplicateLine":             true,
 	"DeleteLine":                true,
 	"MoveLinesUp":               true,

internal/action/command.go

@@ -139,10 +139,11 @@ func (h *BufPane) TextFilterCmd(args []string) {
 		InfoBar.Error("usage: textfilter arguments")
 		return
 	}
-	sel := h.Cursor.GetSelection()
+	for _, c := range h.Buf.GetCursors() {
+		sel := c.GetSelection()
 		if len(sel) == 0 {
-		h.Cursor.SelectWord()
-		sel = h.Cursor.GetSelection()
+			c.SelectWord()
+			sel = c.GetSelection()
 		}
 		var bout, berr bytes.Buffer
 		cmd := exec.Command(args[0], args[1:]...)
@@ -154,8 +155,9 @@ func (h *BufPane) TextFilterCmd(args []string) {
 			InfoBar.Error(err.Error() + " " + berr.String())
 			return
 		}
-	h.Cursor.DeleteSelection()
-	h.Buf.Insert(h.Cursor.Loc, bout.String())
+		c.DeleteSelection()
+		h.Buf.Insert(c.Loc, bout.String())
+	}
 }
 
 // TabMoveCmd moves the current tab to a given index (starts at 1). The
@@ -203,6 +205,7 @@ func (h *BufPane) TabMoveCmd(args []string) {
 	Tabs.List = append(Tabs.List, nil)
 	copy(Tabs.List[idxTo+1:], Tabs.List[idxTo:])
 	Tabs.List[idxTo] = activeTab
+	Tabs.Resize()
 	Tabs.UpdateNames()
 	Tabs.SetActive(idxTo)
 	// InfoBar.Message(fmt.Sprintf("Moved tab from slot %d to %d", idxFrom+1, idxTo+1))
@@ -305,15 +308,8 @@ func (h *BufPane) OpenCmd(args []string) {
 			}
 			h.OpenBuffer(b)
 		}
-		if h.Buf.Modified() {
-			InfoBar.YNPrompt("Save changes to "+h.Buf.GetName()+" before closing? (y,n,esc)", func(yes, canceled bool) {
-				if !canceled && !yes {
-					open()
-				} else if !canceled && yes {
-					h.Save()
-					open()
-				}
-			})
+		if h.Buf.Modified() && !h.Buf.Shared() {
+			h.closePrompt("Save", open)
 		} else {
 			open()
 		}
@@ -428,7 +424,7 @@ func (h *BufPane) ReopenCmd(args []string) {
 	}
 }
 
-func (h *BufPane) openHelp(page string) error {
+func (h *BufPane) openHelp(page string, hsplit bool, forceSplit bool) error {
 	if data, err := config.FindRuntimeFile(config.RTHelp, page).Data(); err != nil {
 		return errors.New(fmt.Sprintf("Unable to load help text for %s: %v", page, err))
 	} else {
@@ -437,33 +433,74 @@ func (h *BufPane) openHelp(page string) error {
 		helpBuffer.SetOptionNative("hltaberrors", false)
 		helpBuffer.SetOptionNative("hltrailingws", false)
 
-		if h.Buf.Type == buffer.BTHelp {
+		if h.Buf.Type == buffer.BTHelp && !forceSplit {
 			h.OpenBuffer(helpBuffer)
-		} else {
+		} else if hsplit {
 			h.HSplitBuf(helpBuffer)
+		} else {
+			h.VSplitBuf(helpBuffer)
 		}
 	}
 	return nil
 }
 
-// HelpCmd tries to open the given help page in a horizontal split
+// HelpCmd tries to open the given help page according to the split type
+// configured with the "helpsplit" option. It can be overriden by the optional
+// arguments "-vpslit" or "-hsplit". In case more than one help page is given
+// as argument then it opens all of them with the defined split type.
 func (h *BufPane) HelpCmd(args []string) {
+	hsplit := config.GlobalSettings["helpsplit"] == "hsplit"
 	if len(args) < 1 {
 		// Open the default help if the user just typed "> help"
-		h.openHelp("help")
+		h.openHelp("help", hsplit, false)
 	} else {
-		if config.FindRuntimeFile(config.RTHelp, args[0]) != nil {
-			err := h.openHelp(args[0])
+		var topics []string
+		forceSplit := false
+		const errSplit = "hsplit and vsplit are not allowed at the same time"
+		for _, arg := range args {
+			switch arg {
+			case "-vsplit":
+				if forceSplit {
+					InfoBar.Error(errSplit)
+					return
+				}
+				hsplit = false
+				forceSplit = true
+			case "-hsplit":
+				if forceSplit {
+					InfoBar.Error(errSplit)
+					return
+				}
+				hsplit = true
+				forceSplit = true
+			default:
+				topics = append(topics, arg)
+			}
+		}
+
+		if len(topics) < 1 {
+			// Do the same as without arg
+			h.openHelp("help", hsplit, forceSplit)
+			return
+		}
+		if len(topics) > 1 {
+			forceSplit = true
+		}
+
+		for _, topic := range topics {
+			if config.FindRuntimeFile(config.RTHelp, topic) != nil {
+				err := h.openHelp(topic, hsplit, forceSplit)
 				if err != nil {
 					InfoBar.Error(err)
 				}
 			} else {
-			InfoBar.Error("Sorry, no help for ", args[0])
+				InfoBar.Error("Sorry, no help for ", topic)
+			}
 		}
 	}
 }
 
-// VSplitCmd opens a vertical split with file given in the first argument
+// VSplitCmd opens one or more vertical splits with the files given as arguments
 // If no file is given, it opens an empty buffer in a new split
 func (h *BufPane) VSplitCmd(args []string) {
 	if len(args) == 0 {
@@ -472,7 +509,8 @@ func (h *BufPane) VSplitCmd(args []string) {
 		return
 	}
 
-	buf, err := buffer.NewBufferFromFile(args[0], buffer.BTDefault)
+	for _, a := range args {
+		buf, err := buffer.NewBufferFromFile(a, buffer.BTDefault)
 		if err != nil {
 			InfoBar.Error(err)
 			return
@@ -480,8 +518,9 @@ func (h *BufPane) VSplitCmd(args []string) {
 
 		h.VSplitBuf(buf)
 	}
+}
 
-// HSplitCmd opens a horizontal split with file given in the first argument
+// HSplitCmd opens one or more horizontal splits with the files given as arguments
 // If no file is given, it opens an empty buffer in a new split
 func (h *BufPane) HSplitCmd(args []string) {
 	if len(args) == 0 {
@@ -490,7 +529,8 @@ func (h *BufPane) HSplitCmd(args []string) {
 		return
 	}
 
-	buf, err := buffer.NewBufferFromFile(args[0], buffer.BTDefault)
+	for _, a := range args {
+		buf, err := buffer.NewBufferFromFile(a, buffer.BTDefault)
 		if err != nil {
 			InfoBar.Error(err)
 			return
@@ -498,13 +538,15 @@ func (h *BufPane) HSplitCmd(args []string) {
 
 		h.HSplitBuf(buf)
 	}
+}
 
 // EvalCmd evaluates a lua expression
 func (h *BufPane) EvalCmd(args []string) {
 	InfoBar.Error("Eval unsupported")
 }
 
-// NewTabCmd opens the given file in a new tab
+// NewTabCmd opens one or more tabs with the files given as arguments
+// If no file is given, it opens an empty buffer in a new tab
 func (h *BufPane) NewTabCmd(args []string) {
 	width, height := screen.Screen.Size()
 	iOffset := config.GetInfoBarOffset()
@@ -609,7 +651,16 @@ func SetGlobalOptionNative(option string, nativeValue interface{}) error {
 		delete(b.LocalSettings, option)
 	}
 
-	return config.WriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
+	err := config.WriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
+	if err != nil {
+		if errors.Is(err, util.ErrOverwrite) {
+			screen.TermMessage(err)
+			err = errors.Unwrap(err)
+		}
+		return err
+	}
+
+	return nil
 }
 
 func SetGlobalOption(option, value string) error {
@@ -734,9 +785,13 @@ func (h *BufPane) BindCmd(args []string) {
 
 	_, err := TryBindKey(parseKeyArg(args[0]), args[1], true)
 	if err != nil {
+		if errors.Is(err, util.ErrOverwrite) {
+			screen.TermMessage(err)
+		} else {
 			InfoBar.Error(err)
 		}
 	}
+}
 
 // UnbindCmd binds a key to its default action
 func (h *BufPane) UnbindCmd(args []string) {
@@ -747,9 +802,13 @@ func (h *BufPane) UnbindCmd(args []string) {
 
 	err := UnbindKey(parseKeyArg(args[0]))
 	if err != nil {
+		if errors.Is(err, util.ErrOverwrite) {
+			screen.TermMessage(err)
+		} else {
 			InfoBar.Error(err)
 		}
 	}
+}
 
 // RunCmd runs a shell command in the background
 func (h *BufPane) RunCmd(args []string) {
@@ -841,7 +900,7 @@ func (h *BufPane) SaveCmd(args []string) {
 	if len(args) == 0 {
 		h.Save()
 	} else {
-		h.Buf.SaveAs(args[0])
+		h.saveBufToFile(args[0], "SaveAs", nil)
 	}
 }
 
@@ -902,10 +961,12 @@ func (h *BufPane) ReplaceCmd(args []string) {
 	nreplaced := 0
 	start := h.Buf.Start()
 	end := h.Buf.End()
+	searchLoc := h.Cursor.Loc
 	selection := h.Cursor.HasSelection()
 	if selection {
 		start = h.Cursor.CurSelection[0]
 		end = h.Cursor.CurSelection[1]
+		searchLoc = start // otherwise me might start at the end
 	}
 	if all {
 		nreplaced, _ = h.Buf.ReplaceRegex(start, end, regex, replace, !noRegex)
@@ -914,7 +975,7 @@ func (h *BufPane) ReplaceCmd(args []string) {
 			return l.GreaterEqual(start) && l.LessEqual(end)
 		}
 
-		searchLoc := h.Cursor.Loc
+		lastMatchEnd := buffer.Loc{-1, -1}
 		var doReplacement func()
 		doReplacement = func() {
 			locs, found, err := h.Buf.FindNext(search, start, end, searchLoc, true, true)
@@ -929,6 +990,18 @@ func (h *BufPane) ReplaceCmd(args []string) {
 				return
 			}
 
+			if lastMatchEnd == locs[1] {
+				// skip empty match right after previous match
+				if searchLoc == end {
+					searchLoc = start
+					lastMatchEnd = buffer.Loc{-1, -1}
+				} else {
+					searchLoc = searchLoc.Move(1, h.Buf)
+				}
+				doReplacement()
+				return
+			}
+
 			h.Cursor.SetSelectionStart(locs[0])
 			h.Cursor.SetSelectionEnd(locs[1])
 			h.GotoLoc(locs[0])
@@ -954,6 +1027,7 @@ func (h *BufPane) ReplaceCmd(args []string) {
 					h.Buf.RelocateCursors()
 					return
 				}
+				lastMatchEnd = searchLoc
 				doReplacement()
 			})
 		}
@@ -985,10 +1059,42 @@ func (h *BufPane) ReplaceAllCmd(args []string) {
 	h.ReplaceCmd(append(args, "-a"))
 }
 
+func (h *BufPane) openTerm(args []string, newtab bool) {
+	t := new(shell.Terminal)
+	err := t.Start(args, false, true, nil, nil)
+	if err != nil {
+		InfoBar.Error(err)
+		return
+	}
+
+	pane := 0
+	id := h.ID()
+	if newtab {
+		h.AddTab()
+		id = MainTab().Panes[pane].ID()
+	} else {
+		for i, p := range MainTab().Panes {
+			if p.IsActive() {
+				pane = i
+				id = p.ID()
+				p.Close()
+				break
+			}
+		}
+	}
+
+	v := h.GetView()
+	tp, err := NewTermPane(v.X, v.Y, v.Width, v.Height, t, id, MainTab())
+	if err != nil {
+		InfoBar.Error(err)
+		return
+	}
+	MainTab().Panes[pane] = tp
+	MainTab().SetActive(pane)
+}
+
 // TermCmd opens a terminal in the current view
 func (h *BufPane) TermCmd(args []string) {
-	ps := h.tab.Panes
-
 	if !TermEmuSupported {
 		InfoBar.Error("Terminal emulator not supported on this system")
 		return
@@ -1003,56 +1109,19 @@ func (h *BufPane) TermCmd(args []string) {
 		args = []string{sh}
 	}
 
-	term := func(i int, newtab bool) {
-		t := new(shell.Terminal)
-		err := t.Start(args, false, true, nil, nil)
-		if err != nil {
-			InfoBar.Error(err)
-			return
-		}
-
-		id := h.ID()
-		if newtab {
-			h.AddTab()
-			i = 0
-			id = MainTab().Panes[0].ID()
-		} else {
-			MainTab().Panes[i].Close()
-		}
-
-		v := h.GetView()
-		tp, err := NewTermPane(v.X, v.Y, v.Width, v.Height, t, id, MainTab())
-		if err != nil {
-			InfoBar.Error(err)
-			return
-		}
-		MainTab().Panes[i] = tp
-		MainTab().SetActive(i)
-	}
-
 	// If there is only one open file we make a new tab instead of overwriting it
 	newtab := len(MainTab().Panes) == 1 && len(Tabs.List) == 1
-
 	if newtab {
-		term(0, true)
+		h.openTerm(args, true)
 		return
 	}
 
-	for i, p := range ps {
-		if p.ID() == h.ID() {
-			if h.Buf.Modified() {
-				InfoBar.YNPrompt("Save changes to "+h.Buf.GetName()+" before closing? (y,n,esc)", func(yes, canceled bool) {
-					if !canceled && !yes {
-						term(i, false)
-					} else if !canceled && yes {
-						h.Save()
-						term(i, false)
-					}
+	if h.Buf.Modified() && !h.Buf.Shared() {
+		h.closePrompt("Save", func() {
+			h.openTerm(args, false)
 		})
 	} else {
-				term(i, false)
-			}
-		}
+		h.openTerm(args, false)
 	}
 }
 

internal/action/defaults.go

@@ -3,7 +3,7 @@ package action
 var termdefaults = map[string]string{
 	"<Ctrl-q><Ctrl-q>": "Exit",
 	"<Ctrl-e><Ctrl-e>": "CommandMode",
-	"<Ctrl-w><Ctrl-w>": "NextSplit",
+	"<Ctrl-w><Ctrl-w>": "NextSplit|FirstSplit",
 }
 
 // DefaultBindings returns a map containing micro's default keybindings

internal/action/defaults_darwin.go

@@ -45,23 +45,23 @@ var bufdefaults = map[string]string{
 	"Alt-]":          "DiffNext|CursorEnd",
 	"Ctrl-z":         "Undo",
 	"Ctrl-y":         "Redo",
-	"Ctrl-c":         "CopyLine|Copy",
-	"Ctrl-x":         "Cut",
+	"Ctrl-c":         "Copy|CopyLine",
+	"Ctrl-x":         "Cut|CutLine",
 	"Ctrl-k":         "CutLine",
-	"Ctrl-d":         "DuplicateLine",
+	"Ctrl-d":         "Duplicate|DuplicateLine",
 	"Ctrl-v":         "Paste",
 	"Ctrl-a":         "SelectAll",
 	"Ctrl-t":         "AddTab",
-	"Alt-,":          "PreviousTab",
-	"Alt-.":          "NextTab",
+	"Alt-,":          "PreviousTab|LastTab",
+	"Alt-.":          "NextTab|FirstTab",
 	"Home":           "StartOfTextToggle",
 	"End":            "EndOfLine",
 	"CtrlHome":       "CursorStart",
 	"CtrlEnd":        "CursorEnd",
 	"PageUp":         "CursorPageUp",
 	"PageDown":       "CursorPageDown",
-	"CtrlPageUp":     "PreviousTab",
-	"CtrlPageDown":   "NextTab",
+	"CtrlPageUp":     "PreviousTab|LastTab",
+	"CtrlPageDown":   "NextTab|FirstTab",
 	"ShiftPageUp":    "SelectPageUp",
 	"ShiftPageDown":  "SelectPageDown",
 	"Ctrl-g":         "ToggleHelp",
@@ -72,7 +72,7 @@ var bufdefaults = map[string]string{
 	"Ctrl-b":         "ShellMode",
 	"Ctrl-q":         "Quit",
 	"Ctrl-e":         "CommandMode",
-	"Ctrl-w":         "NextSplit",
+	"Ctrl-w":         "NextSplit|FirstSplit",
 	"Ctrl-u":         "ToggleMacro",
 	"Ctrl-j":         "PlayMacro",
 	"Insert":         "ToggleOverwriteMode",
@@ -146,8 +146,8 @@ var infodefaults = map[string]string{
 	"Backtab":        "CycleAutocompleteBack",
 	"Ctrl-z":         "Undo",
 	"Ctrl-y":         "Redo",
-	"Ctrl-c":         "CopyLine|Copy",
-	"Ctrl-x":         "Cut",
+	"Ctrl-c":         "Copy|CopyLine",
+	"Ctrl-x":         "Cut|CutLine",
 	"Ctrl-k":         "CutLine",
 	"Ctrl-v":         "Paste",
 	"Home":           "StartOfTextToggle",

internal/action/defaults_other.go

@@ -48,23 +48,23 @@ var bufdefaults = map[string]string{
 	"Alt-]":          "DiffNext|CursorEnd",
 	"Ctrl-z":         "Undo",
 	"Ctrl-y":         "Redo",
-	"Ctrl-c":         "CopyLine|Copy",
-	"Ctrl-x":         "Cut",
+	"Ctrl-c":         "Copy|CopyLine",
+	"Ctrl-x":         "Cut|CutLine",
 	"Ctrl-k":         "CutLine",
-	"Ctrl-d":         "DuplicateLine",
+	"Ctrl-d":         "Duplicate|DuplicateLine",
 	"Ctrl-v":         "Paste",
 	"Ctrl-a":         "SelectAll",
 	"Ctrl-t":         "AddTab",
-	"Alt-,":          "PreviousTab",
-	"Alt-.":          "NextTab",
+	"Alt-,":          "PreviousTab|LastTab",
+	"Alt-.":          "NextTab|FirstTab",
 	"Home":           "StartOfTextToggle",
 	"End":            "EndOfLine",
 	"CtrlHome":       "CursorStart",
 	"CtrlEnd":        "CursorEnd",
 	"PageUp":         "CursorPageUp",
 	"PageDown":       "CursorPageDown",
-	"CtrlPageUp":     "PreviousTab",
-	"CtrlPageDown":   "NextTab",
+	"CtrlPageUp":     "PreviousTab|LastTab",
+	"CtrlPageDown":   "NextTab|FirstTab",
 	"ShiftPageUp":    "SelectPageUp",
 	"ShiftPageDown":  "SelectPageDown",
 	"Ctrl-g":         "ToggleHelp",
@@ -75,7 +75,7 @@ var bufdefaults = map[string]string{
 	"Ctrl-b":         "ShellMode",
 	"Ctrl-q":         "Quit",
 	"Ctrl-e":         "CommandMode",
-	"Ctrl-w":         "NextSplit",
+	"Ctrl-w":         "NextSplit|FirstSplit",
 	"Ctrl-u":         "ToggleMacro",
 	"Ctrl-j":         "PlayMacro",
 	"Insert":         "ToggleOverwriteMode",
@@ -149,8 +149,8 @@ var infodefaults = map[string]string{
 	"Backtab":        "CycleAutocompleteBack",
 	"Ctrl-z":         "Undo",
 	"Ctrl-y":         "Redo",
-	"Ctrl-c":         "CopyLine|Copy",
-	"Ctrl-x":         "Cut",
+	"Ctrl-c":         "Copy|CopyLine",
+	"Ctrl-x":         "Cut|CutLine",
 	"Ctrl-k":         "CutLine",
 	"Ctrl-v":         "Paste",
 	"Home":           "StartOfTextToggle",

internal/action/events.go

@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"strings"
 
-	"github.com/zyedidia/tcell/v2"
+	"github.com/micro-editor/tcell/v2"
 )
 
 type Event interface {

internal/action/infocomplete.go

@@ -135,15 +135,6 @@ headerLoop:
 	return chosen, suggestions
 }
 
-func contains(s []string, e string) bool {
-	for _, a := range s {
-		if a == e {
-			return true
-		}
-	}
-	return false
-}
-
 // OptionComplete autocompletes options
 func OptionComplete(b *buffer.Buffer) ([]string, []string) {
 	c := b.GetActiveCursor()

internal/action/infopane.go

@@ -3,12 +3,12 @@ package action
 import (
 	"bytes"
 
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/display"
 	"github.com/zyedidia/micro/v2/internal/info"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"github.com/zyedidia/tcell/v2"
 )
 
 type InfoKeyAction func(*InfoPane)

internal/action/keytree.go

@@ -3,7 +3,7 @@ package action
 import (
 	"bytes"
 
-	"github.com/zyedidia/tcell/v2"
+	"github.com/micro-editor/tcell/v2"
 )
 
 type PaneKeyAction func(Pane) bool

internal/action/rawpane.go

@@ -4,9 +4,9 @@ import (
 	"fmt"
 	"reflect"
 
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/display"
-	"github.com/zyedidia/tcell/v2"
 )
 
 type RawPane struct {

internal/action/tab.go

@@ -3,13 +3,13 @@ package action
 import (
 	luar "layeh.com/gopher-luar"
 
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/display"
 	ulua "github.com/zyedidia/micro/v2/internal/lua"
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/views"
-	"github.com/zyedidia/tcell/v2"
 )
 
 // The TabList is a list of tabs and a window to display the tab bar
@@ -349,6 +349,16 @@ func (t *Tab) SetActive(i int) {
 	}
 }
 
+// AddPane adds a pane at a given index
+func (t *Tab) AddPane(pane Pane, i int) {
+	if len(t.Panes) == i {
+		t.Panes = append(t.Panes, pane)
+		return
+	}
+	t.Panes = append(t.Panes[:i+1], t.Panes[i:]...)
+	t.Panes[i] = pane
+}
+
 // GetPane returns the pane with the given split index
 func (t *Tab) GetPane(splitid uint64) int {
 	for i, p := range t.Panes {

internal/action/terminal_supported.go

@@ -1,4 +1,4 @@
-// +build linux darwin dragonfly openbsd_amd64 freebsd
+//go:build linux || darwin || dragonfly || solaris || openbsd || netbsd || freebsd
 
 package action
 

internal/action/terminal_unsupported.go

@@ -1,4 +1,4 @@
-// +build !linux,!darwin,!freebsd,!dragonfly,!openbsd_amd64
+//go:build plan9 || nacl || windows
 
 package action
 

internal/action/termpane.go

@@ -4,13 +4,13 @@ import (
 	"errors"
 	"runtime"
 
+	"github.com/micro-editor/tcell/v2"
+	"github.com/micro-editor/terminal"
 	"github.com/zyedidia/micro/v2/internal/clipboard"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/display"
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/shell"
-	"github.com/zyedidia/tcell/v2"
-	"github.com/zyedidia/terminal"
 )
 
 type TermKeyAction func(*TermPane)

internal/buffer/autocomplete.go

@@ -2,7 +2,7 @@ package buffer
 
 import (
 	"bytes"
-	"io/ioutil"
+	"io/fs"
 	"os"
 	"sort"
 	"strings"
@@ -109,15 +109,15 @@ func FileComplete(b *Buffer) ([]string, []string) {
 	sep := string(os.PathSeparator)
 	dirs := strings.Split(input, sep)
 
-	var files []os.FileInfo
+	var files []fs.DirEntry
 	var err error
 	if len(dirs) > 1 {
 		directories := strings.Join(dirs[:len(dirs)-1], sep) + sep
 
 		directories, _ = util.ReplaceHome(directories)
-		files, err = ioutil.ReadDir(directories)
+		files, err = os.ReadDir(directories)
 	} else {
-		files, err = ioutil.ReadDir(".")
+		files, err = os.ReadDir(".")
 	}
 
 	if err != nil {

internal/buffer/backup.go

@@ -1,24 +1,26 @@
 package buffer
 
 import (
+	"errors"
 	"fmt"
-	"io"
+	"io/fs"
 	"os"
 	"path/filepath"
-	"sync/atomic"
-	"time"
 
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"golang.org/x/text/encoding"
 )
 
-const backupMsg = `A backup was detected for this file. This likely means that micro
-crashed while editing this file, or another instance of micro is currently
-editing this file.
+const BackupMsg = `A backup was detected for:
 
-The backup was created on %s, and the file is
+%s
+
+This likely means that micro crashed while editing this file,
+or another instance of micro is currently editing this file,
+or an error occurred while saving this file so it may be corrupted.
+
+The backup was created on %s and its path is:
 
 %s
 
@@ -30,90 +32,80 @@ The backup was created on %s, and the file is
 
 Options: [r]ecover, [i]gnore, [a]bort: `
 
-var backupRequestChan chan *Buffer
+const backupSeconds = 8
 
-func backupThread() {
-	for {
-		time.Sleep(time.Second * 8)
-
-		for len(backupRequestChan) > 0 {
-			b := <-backupRequestChan
-			bfini := atomic.LoadInt32(&(b.fini)) != 0
-			if !bfini {
-				b.Backup()
-			}
-		}
-	}
-}
+var BackupCompleteChan chan *Buffer
 
 func init() {
-	backupRequestChan = make(chan *Buffer, 10)
-
-	go backupThread()
+	BackupCompleteChan = make(chan *Buffer, 10)
 }
 
 func (b *Buffer) RequestBackup() {
-	if !b.requestedBackup {
+	if !b.RequestedBackup {
 		select {
 		case backupRequestChan <- b:
 		default:
 			// channel is full
 		}
-		b.requestedBackup = true
+		b.RequestedBackup = true
 	}
 }
 
-// Backup saves the current buffer to ConfigDir/backups
+func (b *Buffer) backupDir() string {
+	backupdir, err := util.ReplaceHome(b.Settings["backupdir"].(string))
+	if backupdir == "" || err != nil {
+		backupdir = filepath.Join(config.ConfigDir, "backups")
+	}
+	return backupdir
+}
+
+func (b *Buffer) keepBackup() bool {
+	return b.forceKeepBackup || b.Settings["permbackup"].(bool)
+}
+
+// Backup saves the current buffer to the backups directory
 func (b *Buffer) Backup() error {
 	if !b.Settings["backup"].(bool) || b.Path == "" || b.Type != BTDefault {
 		return nil
 	}
 
-	backupdir, err := util.ReplaceHome(b.Settings["backupdir"].(string))
-	if backupdir == "" || err != nil {
-		backupdir = filepath.Join(config.ConfigDir, "backups")
-	}
-	if _, err := os.Stat(backupdir); os.IsNotExist(err) {
+	backupdir := b.backupDir()
+	if _, err := os.Stat(backupdir); errors.Is(err, fs.ErrNotExist) {
 		os.Mkdir(backupdir, os.ModePerm)
 	}
 
-	name := filepath.Join(backupdir, util.EscapePath(b.AbsPath))
-
-	err = overwriteFile(name, encoding.Nop, func(file io.Writer) (e error) {
-		if len(b.lines) == 0 {
-			return
+	name := util.DetermineEscapePath(backupdir, b.AbsPath)
+	if _, err := os.Stat(name); errors.Is(err, fs.ErrNotExist) {
+		_, err = b.overwriteFile(name)
+		if err == nil {
+			BackupCompleteChan <- b
+		}
+		return err
 	}
 
-		// end of line
-		eol := []byte{'\n'}
-
-		// write lines
-		if _, e = file.Write(b.lines[0].data); e != nil {
-			return
+	tmp := util.AppendBackupSuffix(name)
+	_, err := b.overwriteFile(tmp)
+	if err != nil {
+		os.Remove(tmp)
+		return err
+	}
+	err = os.Rename(tmp, name)
+	if err != nil {
+		os.Remove(tmp)
+		return err
 	}
 
-		for _, l := range b.lines[1:] {
-			if _, e = file.Write(eol); e != nil {
-				return
-			}
-			if _, e = file.Write(l.data); e != nil {
-				return
-			}
-		}
-		return
-	}, false)
-
-	b.requestedBackup = false
+	BackupCompleteChan <- b
 
 	return err
 }
 
 // RemoveBackup removes any backup file associated with this buffer
 func (b *Buffer) RemoveBackup() {
-	if !b.Settings["backup"].(bool) || b.Settings["permbackup"].(bool) || b.Path == "" || b.Type != BTDefault {
+	if !b.Settings["backup"].(bool) || b.keepBackup() || b.Path == "" || b.Type != BTDefault {
 		return
 	}
-	f := filepath.Join(config.ConfigDir, "backups", util.EscapePath(b.AbsPath))
+	f := util.DetermineEscapePath(b.backupDir(), b.AbsPath)
 	os.Remove(f)
 }
 
@@ -121,13 +113,13 @@ func (b *Buffer) RemoveBackup() {
 // Returns true if a backup was applied
 func (b *Buffer) ApplyBackup(fsize int64) (bool, bool) {
 	if b.Settings["backup"].(bool) && !b.Settings["permbackup"].(bool) && len(b.Path) > 0 && b.Type == BTDefault {
-		backupfile := filepath.Join(config.ConfigDir, "backups", util.EscapePath(b.AbsPath))
+		backupfile := util.DetermineEscapePath(b.backupDir(), b.AbsPath)
 		if info, err := os.Stat(backupfile); err == nil {
 			backup, err := os.Open(backupfile)
 			if err == nil {
 				defer backup.Close()
 				t := info.ModTime()
-				msg := fmt.Sprintf(backupMsg, t.Format("Mon Jan _2 at 15:04, 2006"), util.EscapePath(b.AbsPath))
+				msg := fmt.Sprintf(BackupMsg, b.Path, t.Format("Mon Jan _2 at 15:04, 2006"), backupfile)
 				choice := screen.TermPrompt(msg, []string{"r", "i", "a", "recover", "ignore", "abort"}, true)
 
 				if choice%3 == 0 {

internal/buffer/buffer.go

@@ -7,9 +7,8 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
+	"io/fs"
 	"os"
-	"path"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -25,13 +24,12 @@ import (
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/util"
 	"github.com/zyedidia/micro/v2/pkg/highlight"
+	"golang.org/x/text/encoding"
 	"golang.org/x/text/encoding/htmlindex"
 	"golang.org/x/text/encoding/unicode"
 	"golang.org/x/text/transform"
 )
 
-const backupTime = 8000
-
 var (
 	// OpenBuffers is a list of the currently open buffers
 	OpenBuffers []*Buffer
@@ -89,6 +87,8 @@ type SharedBuffer struct {
 	// LocalSettings customized by the user for this buffer only
 	LocalSettings map[string]bool
 
+	encoding encoding.Encoding
+
 	Suggestions   []string
 	Completions   []string
 	CurSuggestion int
@@ -101,7 +101,8 @@ type SharedBuffer struct {
 	diffLock          sync.RWMutex
 	diff              map[int]DiffStatus
 
-	requestedBackup bool
+	RequestedBackup bool
+	forceKeepBackup bool
 
 	// ReloadDisabled allows the user to disable reloads if they
 	// are viewing a file that is constantly changing
@@ -209,6 +210,11 @@ type Buffer struct {
 	LastSearchRegex bool
 	// HighlightSearch enables highlighting all instances of the last successful search
 	HighlightSearch bool
+
+	// OverwriteMode indicates that we are in overwrite mode (toggled by
+	// Insert key by default) i.e. that typing a character shall replace the
+	// character under the cursor instead of inserting a character before it.
+	OverwriteMode bool
 }
 
 // NewBufferFromFileAtLoc opens a new buffer with a given cursor location
@@ -232,17 +238,20 @@ func NewBufferFromFileAtLoc(path string, btype BufType, cursorLoc Loc) (*Buffer,
 		return nil, err
 	}
 
-	f, err := os.OpenFile(filename, os.O_WRONLY, 0)
-	readonly := os.IsPermission(err)
-	f.Close()
-
 	fileInfo, serr := os.Stat(filename)
-	if serr != nil && !os.IsNotExist(serr) {
+	if serr != nil && !errors.Is(serr, fs.ErrNotExist) {
 		return nil, serr
 	}
 	if serr == nil && fileInfo.IsDir() {
 		return nil, errors.New("Error: " + filename + " is a directory and cannot be opened")
 	}
+	if serr == nil && !fileInfo.Mode().IsRegular() {
+		return nil, errors.New("Error: " + filename + " is not a regular file and cannot be opened")
+	}
+
+	f, err := os.OpenFile(filename, os.O_WRONLY, 0)
+	readonly := errors.Is(err, fs.ErrPermission)
+	f.Close()
 
 	file, err := os.Open(filename)
 	if err == nil {
@@ -250,7 +259,7 @@ func NewBufferFromFileAtLoc(path string, btype BufType, cursorLoc Loc) (*Buffer,
 	}
 
 	var buf *Buffer
-	if os.IsNotExist(err) {
+	if errors.Is(err, fs.ErrNotExist) {
 		// File does not exist -- create an empty buffer with that name
 		buf = NewBufferFromString("", filename, btype)
 	} else if err != nil {
@@ -320,30 +329,19 @@ func NewBuffer(r io.Reader, size int64, path string, startcursor Loc, btype BufT
 		b.AbsPath = absPath
 		b.Path = path
 
-		// this is a little messy since we need to know some settings to read
-		// the file properly, but some settings depend on the filetype, which
-		// we don't know until reading the file. We first read the settings
-		// into a local variable and then use that to determine the encoding,
-		// readonly, and fileformat necessary for reading the file and
-		// assigning the filetype.
-		settings := config.DefaultCommonSettings()
 		b.Settings = config.DefaultCommonSettings()
 		b.LocalSettings = make(map[string]bool)
 		for k, v := range config.GlobalSettings {
 			if _, ok := config.DefaultGlobalOnlySettings[k]; !ok {
 				// make sure setting is not global-only
-				settings[k] = v
 				b.Settings[k] = v
 			}
 		}
-		config.InitLocalSettings(settings, absPath)
-		b.Settings["readonly"] = settings["readonly"]
-		b.Settings["filetype"] = settings["filetype"]
-		b.Settings["syntax"] = settings["syntax"]
+		config.UpdatePathGlobLocals(b.Settings, absPath)
 
-		enc, err := htmlindex.Get(settings["encoding"].(string))
+		b.encoding, err = htmlindex.Get(b.Settings["encoding"].(string))
 		if err != nil {
-			enc = unicode.UTF8
+			b.encoding = unicode.UTF8
 			b.Settings["encoding"] = "utf-8"
 		}
 
@@ -354,14 +352,14 @@ func NewBuffer(r io.Reader, size int64, path string, startcursor Loc, btype BufT
 			return NewBufferFromString("", "", btype)
 		}
 		if !hasBackup {
-			reader := bufio.NewReader(transform.NewReader(r, enc.NewDecoder()))
+			reader := bufio.NewReader(transform.NewReader(r, b.encoding.NewDecoder()))
 
 			var ff FileFormat = FFAuto
 
 			if size == 0 {
 				// for empty files, use the fileformat setting instead of
 				// autodetection
-				switch settings["fileformat"] {
+				switch b.Settings["fileformat"] {
 				case "unix":
 					ff = FFUnix
 				case "dos":
@@ -392,10 +390,10 @@ func NewBuffer(r io.Reader, size int64, path string, startcursor Loc, btype BufT
 	}
 
 	b.UpdateRules()
-	// init local settings again now that we know the filetype
-	config.InitLocalSettings(b.Settings, b.Path)
+	// we know the filetype now, so update per-filetype settings
+	config.UpdateFileTypeLocals(b.Settings, b.Settings["filetype"].(string))
 
-	if _, err := os.Stat(filepath.Join(config.ConfigDir, "buffers")); os.IsNotExist(err) {
+	if _, err := os.Stat(filepath.Join(config.ConfigDir, "buffers")); errors.Is(err, fs.ErrNotExist) {
 		os.Mkdir(filepath.Join(config.ConfigDir, "buffers"), os.ModePerm)
 	}
 
@@ -480,7 +478,7 @@ func (b *Buffer) GetName() string {
 		name = b.Path
 	}
 	if b.Settings["basename"].(bool) {
-		return path.Base(name)
+		return filepath.Base(name)
 	}
 	return name
 }
@@ -546,7 +544,7 @@ func (b *Buffer) ReOpen() error {
 	}
 
 	reader := bufio.NewReader(transform.NewReader(file, enc.NewDecoder()))
-	data, err := ioutil.ReadAll(reader)
+	data, err := io.ReadAll(reader)
 	txt := string(data)
 
 	if err != nil {
@@ -621,6 +619,16 @@ func (b *Buffer) WordAt(loc Loc) []byte {
 	return b.Substr(start, end)
 }
 
+// Shared returns if there are other buffers with the same file as this buffer
+func (b *Buffer) Shared() bool {
+	for _, buf := range OpenBuffers {
+		if buf != b && buf.SharedBuffer == b.SharedBuffer {
+			return true
+		}
+	}
+	return false
+}
+
 // Modified returns if this buffer has been modified since
 // being opened
 func (b *Buffer) Modified() bool {

internal/buffer/cursor.go

@@ -20,8 +20,14 @@ type Cursor struct {
 	buf *Buffer
 	Loc
 
-	// Last cursor x position
+	// Last visual x position of the cursor. Used in cursor up/down movements
+	// for remembering the original x position when moving to a line that is
+	// shorter than current x position.
 	LastVisualX int
+	// Similar to LastVisualX but takes softwrapping into account, i.e. last
+	// visual x position in a visual (wrapped) line on the screen, which may be
+	// different from the line in the buffer.
+	LastWrappedVisualX int
 
 	// The current selection as a range of character numbers (inclusive)
 	CurSelection [2]Loc
@@ -61,8 +67,9 @@ func (c *Cursor) Buf() *Buffer {
 // Goto puts the cursor at the given cursor's location and gives
 // the current cursor its selection too
 func (c *Cursor) Goto(b Cursor) {
-	c.X, c.Y, c.LastVisualX = b.X, b.Y, b.LastVisualX
+	c.X, c.Y = b.X, b.Y
 	c.OrigSelection, c.CurSelection = b.OrigSelection, b.CurSelection
+	c.StoreVisualX()
 }
 
 // GotoLoc puts the cursor at the given cursor's location and gives
@@ -73,8 +80,8 @@ func (c *Cursor) GotoLoc(l Loc) {
 }
 
 // GetVisualX returns the x value of the cursor in visual spaces
-func (c *Cursor) GetVisualX() int {
-	if c.buf.GetVisualX != nil {
+func (c *Cursor) GetVisualX(wrap bool) int {
+	if wrap && c.buf.GetVisualX != nil {
 		return c.buf.GetVisualX(c.Loc)
 	}
 
@@ -100,7 +107,7 @@ func (c *Cursor) GetCharPosInLine(b []byte, visualPos int) int {
 // Start moves the cursor to the start of the line it is on
 func (c *Cursor) Start() {
 	c.X = 0
-	c.LastVisualX = c.GetVisualX()
+	c.StoreVisualX()
 }
 
 // StartOfText moves the cursor to the first non-whitespace rune of
@@ -131,7 +138,7 @@ func (c *Cursor) IsStartOfText() bool {
 // End moves the cursor to the end of the line it is on
 func (c *Cursor) End() {
 	c.X = util.CharacterCount(c.buf.LineBytes(c.Y))
-	c.LastVisualX = c.GetVisualX()
+	c.StoreVisualX()
 }
 
 // CopySelection copies the user's selection to either "primary"
@@ -186,7 +193,7 @@ func (c *Cursor) Deselect(start bool) {
 		if start {
 			c.Loc = c.CurSelection[0]
 		} else {
-			c.Loc = c.CurSelection[1].Move(-1, c.buf)
+			c.Loc = c.CurSelection[1]
 		}
 		c.ResetSelection()
 		c.StoreVisualX()
@@ -615,5 +622,6 @@ func (c *Cursor) RuneUnder(x int) rune {
 }
 
 func (c *Cursor) StoreVisualX() {
-	c.LastVisualX = c.GetVisualX()
+	c.LastVisualX = c.GetVisualX(false)
+	c.LastWrappedVisualX = c.GetVisualX(true)
 }

internal/buffer/eventhandler.go

@@ -104,7 +104,7 @@ func (eh *EventHandler) DoTextEvent(t *TextEvent, useUndo bool) {
 		c.OrigSelection[0] = move(c.OrigSelection[0])
 		c.OrigSelection[1] = move(c.OrigSelection[1])
 		c.Relocate()
-		c.LastVisualX = c.GetVisualX()
+		c.StoreVisualX()
 	}
 
 	if useUndo {

internal/buffer/line_array.go

@@ -285,11 +285,6 @@ func (la *LineArray) deleteLines(y1, y2 int) {
 	la.lines = la.lines[:y1+copy(la.lines[y1:], la.lines[y2+1:])]
 }
 
-// DeleteByte deletes the byte at a position
-func (la *LineArray) deleteByte(pos Loc) {
-	la.lines[pos.Y].data = la.lines[pos.Y].data[:pos.X+copy(la.lines[pos.Y].data[pos.X:], la.lines[pos.Y].data[pos.X+1:])]
-}
-
 // Substr returns the string representation between two locations
 func (la *LineArray) Substr(start, end Loc) []byte {
 	startX := runeToByteIndex(start.X, la.lines[start.Y].data)

internal/buffer/loc.go

@@ -47,6 +47,16 @@ func (l Loc) LessEqual(b Loc) bool {
 	return l == b
 }
 
+// Clamp clamps a loc between start and end
+func (l Loc) Clamp(start, end Loc) Loc {
+	if l.GreaterEqual(end) {
+		return end
+	} else if l.LessThan(start) {
+		return start
+	}
+	return l
+}
+
 // The following functions require a buffer to know where newlines are
 
 // Diff returns the distance between two locations
@@ -139,10 +149,5 @@ func ByteOffset(pos Loc, buf *Buffer) int {
 
 // clamps a loc within a buffer
 func clamp(pos Loc, la *LineArray) Loc {
-	if pos.GreaterEqual(la.End()) {
-		return la.End()
-	} else if pos.LessThan(la.Start()) {
-		return la.Start()
-	}
-	return pos
+	return pos.Clamp(la.Start(), la.End())
 }

internal/buffer/message.go

@@ -1,8 +1,8 @@
 package buffer
 
 import (
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/config"
-	"github.com/zyedidia/tcell/v2"
 )
 
 type MsgType int

internal/buffer/save.go

@@ -5,18 +5,19 @@ import (
 	"bytes"
 	"errors"
 	"io"
+	"io/fs"
 	"os"
 	"os/exec"
 	"os/signal"
 	"path/filepath"
 	"runtime"
+	"sync/atomic"
+	"time"
 	"unicode"
 
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"golang.org/x/text/encoding"
-	"golang.org/x/text/encoding/htmlindex"
 	"golang.org/x/text/transform"
 )
 
@@ -24,68 +25,178 @@ import (
 // because hashing is too slow
 const LargeFileThreshold = 50000
 
-// overwriteFile opens the given file for writing, truncating if one exists, and then calls
-// the supplied function with the file as io.Writer object, also making sure the file is
-// closed afterwards.
-func overwriteFile(name string, enc encoding.Encoding, fn func(io.Writer) error, withSudo bool) (err error) {
+type wrappedFile struct {
+	writeCloser io.WriteCloser
+	withSudo    bool
+	screenb     bool
+	cmd         *exec.Cmd
+	sigChan     chan os.Signal
+}
+
+type saveResponse struct {
+	size int
+	err  error
+}
+
+type saveRequest struct {
+	buf              *Buffer
+	path             string
+	withSudo         bool
+	newFile          bool
+	saveResponseChan chan saveResponse
+}
+
+var saveRequestChan chan saveRequest
+var backupRequestChan chan *Buffer
+
+func init() {
+	saveRequestChan = make(chan saveRequest, 10)
+	backupRequestChan = make(chan *Buffer, 10)
+
+	go func() {
+		duration := backupSeconds * float64(time.Second)
+		backupTicker := time.NewTicker(time.Duration(duration))
+
+		for {
+			select {
+			case sr := <-saveRequestChan:
+				size, err := sr.buf.safeWrite(sr.path, sr.withSudo, sr.newFile)
+				sr.saveResponseChan <- saveResponse{size, err}
+			case <-backupTicker.C:
+				for len(backupRequestChan) > 0 {
+					b := <-backupRequestChan
+					bfini := atomic.LoadInt32(&(b.fini)) != 0
+					if !bfini {
+						b.Backup()
+					}
+				}
+			}
+		}
+	}()
+}
+
+func openFile(name string, withSudo bool) (wrappedFile, error) {
+	var err error
 	var writeCloser io.WriteCloser
 	var screenb bool
 	var cmd *exec.Cmd
+	var sigChan chan os.Signal
 
 	if withSudo {
 		cmd = exec.Command(config.GlobalSettings["sucmd"].(string), "dd", "bs=4k", "of="+name)
-
-		if writeCloser, err = cmd.StdinPipe(); err != nil {
-			return
+		writeCloser, err = cmd.StdinPipe()
+		if err != nil {
+			return wrappedFile{}, err
 		}
 
-		c := make(chan os.Signal, 1)
-		signal.Notify(c, os.Interrupt)
-		go func() {
-			<-c
-			cmd.Process.Kill()
-		}()
+		sigChan = make(chan os.Signal, 1)
+		signal.Reset(os.Interrupt)
+		signal.Notify(sigChan, os.Interrupt)
 
 		screenb = screen.TempFini()
 		// need to start the process now, otherwise when we flush the file
 		// contents to its stdin it might hang because the kernel's pipe size
 		// is too small to handle the full file contents all at once
-		if e := cmd.Start(); e != nil && err == nil {
+		err = cmd.Start()
+		if err != nil {
 			screen.TempStart(screenb)
-			return err
+
+			signal.Notify(util.Sigterm, os.Interrupt)
+			signal.Stop(sigChan)
+
+			return wrappedFile{}, err
+		}
+	} else {
+		writeCloser, err = os.OpenFile(name, os.O_WRONLY|os.O_CREATE, util.FileMode)
+		if err != nil {
+			return wrappedFile{}, err
 		}
-	} else if writeCloser, err = os.OpenFile(name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666); err != nil {
-		return
 	}
 
-	w := bufio.NewWriter(transform.NewWriter(writeCloser, enc.NewEncoder()))
-	err = fn(w)
-
-	if err2 := w.Flush(); err2 != nil && err == nil {
-		err = err2
+	return wrappedFile{writeCloser, withSudo, screenb, cmd, sigChan}, nil
 }
+
+func (wf wrappedFile) Write(b *Buffer) (int, error) {
+	file := bufio.NewWriter(transform.NewWriter(wf.writeCloser, b.encoding.NewEncoder()))
+
+	b.Lock()
+	defer b.Unlock()
+
+	if len(b.lines) == 0 {
+		return 0, nil
+	}
+
+	// end of line
+	var eol []byte
+	if b.Endings == FFDos {
+		eol = []byte{'\r', '\n'}
+	} else {
+		eol = []byte{'\n'}
+	}
+
+	if !wf.withSudo {
+		f := wf.writeCloser.(*os.File)
+		err := f.Truncate(0)
+		if err != nil {
+			return 0, err
+		}
+	}
+
+	// write lines
+	size, err := file.Write(b.lines[0].data)
+	if err != nil {
+		return 0, err
+	}
+
+	for _, l := range b.lines[1:] {
+		if _, err = file.Write(eol); err != nil {
+			return 0, err
+		}
+		if _, err = file.Write(l.data); err != nil {
+			return 0, err
+		}
+		size += len(eol) + len(l.data)
+	}
+
+	err = file.Flush()
+	if err == nil && !wf.withSudo {
 		// Call Sync() on the file to make sure the content is safely on disk.
-	// Does not work with sudo as we don't have direct access to the file.
-	if !withSudo {
-		f := writeCloser.(*os.File)
-		if err2 := f.Sync(); err2 != nil && err == nil {
-			err = err2
+		f := wf.writeCloser.(*os.File)
+		err = f.Sync()
 	}
-	}
-	if err2 := writeCloser.Close(); err2 != nil && err == nil {
-		err = err2
+	return size, err
 }
 
-	if withSudo {
+func (wf wrappedFile) Close() error {
+	err := wf.writeCloser.Close()
+	if wf.withSudo {
 		// wait for dd to finish and restart the screen if we used sudo
-		err := cmd.Wait()
-		screen.TempStart(screenb)
+		err := wf.cmd.Wait()
+		screen.TempStart(wf.screenb)
+
+		signal.Notify(util.Sigterm, os.Interrupt)
+		signal.Stop(wf.sigChan)
+
 		if err != nil {
 			return err
 		}
 	}
+	return err
+}
 
-	return
+func (b *Buffer) overwriteFile(name string) (int, error) {
+	file, err := openFile(name, false)
+	if err != nil {
+		return 0, err
+	}
+
+	size, err := file.Write(b)
+
+	err2 := file.Close()
+	if err2 != nil && err == nil {
+		err = err2
+	}
+	return size, err
 }
 
 // Save saves the buffer to its default path
@@ -146,19 +257,35 @@ func (b *Buffer) saveToFile(filename string, withSudo bool, autoSave bool) error
 		}
 	}
 
-	// Update the last time this file was updated after saving
-	defer func() {
-		b.ModTime, _ = util.GetModTime(filename)
-		err = b.Serialize()
-	}()
+	filename, err = util.ReplaceHome(filename)
+	if err != nil {
+		return err
+	}
 
-	// Removes any tilde and replaces with the absolute path to home
-	absFilename, _ := util.ReplaceHome(filename)
+	newFile := false
+	fileInfo, err := os.Stat(filename)
+	if err != nil {
+		if !errors.Is(err, fs.ErrNotExist) {
+			return err
+		}
+		newFile = true
+	}
+	if err == nil && fileInfo.IsDir() {
+		return errors.New("Error: " + filename + " is a directory and cannot be saved")
+	}
+	if err == nil && !fileInfo.Mode().IsRegular() {
+		return errors.New("Error: " + filename + " is not a regular file and cannot be saved")
+	}
+
+	absFilename, err := filepath.Abs(filename)
+	if err != nil {
+		return err
+	}
 
 	// Get the leading path to the file | "." is returned if there's no leading path provided
 	if dirname := filepath.Dir(absFilename); dirname != "." {
 		// Check if the parent dirs don't exist
-		if _, statErr := os.Stat(dirname); os.IsNotExist(statErr) {
+		if _, statErr := os.Stat(dirname); errors.Is(statErr, fs.ErrNotExist) {
 			// Prompt to make sure they want to create the dirs that are missing
 			if b.Settings["mkparents"].(bool) {
 				// Create all leading dir(s) since they don't exist
@@ -172,49 +299,22 @@ func (b *Buffer) saveToFile(filename string, withSudo bool, autoSave bool) error
 		}
 	}
 
-	var fileSize int
-
-	enc, err := htmlindex.Get(b.Settings["encoding"].(string))
+	saveResponseChan := make(chan saveResponse)
+	saveRequestChan <- saveRequest{b, absFilename, withSudo, newFile, saveResponseChan}
+	result := <-saveResponseChan
+	err = result.err
 	if err != nil {
-		return err
-	}
+		if errors.Is(err, util.ErrOverwrite) {
+			screen.TermMessage(err)
+			err = errors.Unwrap(err)
 
-	fwriter := func(file io.Writer) (e error) {
-		if len(b.lines) == 0 {
-			return
+			b.UpdateModTime()
 		}
-
-		// end of line
-		var eol []byte
-		if b.Endings == FFDos {
-			eol = []byte{'\r', '\n'}
-		} else {
-			eol = []byte{'\n'}
-		}
-
-		// write lines
-		if fileSize, e = file.Write(b.lines[0].data); e != nil {
-			return
-		}
-
-		for _, l := range b.lines[1:] {
-			if _, e = file.Write(eol); e != nil {
-				return
-			}
-			if _, e = file.Write(l.data); e != nil {
-				return
-			}
-			fileSize += len(eol) + len(l.data)
-		}
-		return
-	}
-
-	if err = overwriteFile(absFilename, enc, fwriter, withSudo); err != nil {
 		return err
 	}
 
 	if !b.Settings["fastdirty"].(bool) {
-		if fileSize > LargeFileThreshold {
+		if result.size > LargeFileThreshold {
 			// For large files 'fastdirty' needs to be on
 			b.Settings["fastdirty"] = true
 		} else {
@@ -222,10 +322,70 @@ func (b *Buffer) saveToFile(filename string, withSudo bool, autoSave bool) error
 		}
 	}
 
+	newPath := b.Path != filename
 	b.Path = filename
-	absPath, _ := filepath.Abs(filename)
-	b.AbsPath = absPath
+	b.AbsPath = absFilename
 	b.isModified = false
-	b.UpdateRules()
+	b.UpdateModTime()
+
+	if newPath {
+		// need to update glob-based and filetype-based settings
+		b.ReloadSettings(true)
+	}
+
+	err = b.Serialize()
 	return err
 }
+
+// safeWrite writes the buffer to a file in a "safe" way, preventing loss of the
+// contents of the file if it fails to write the new contents.
+// This means that the file is not overwritten directly but by writing to the
+// backup file first.
+func (b *Buffer) safeWrite(path string, withSudo bool, newFile bool) (int, error) {
+	file, err := openFile(path, withSudo)
+	if err != nil {
+		return 0, err
+	}
+
+	defer func() {
+		if newFile && err != nil {
+			os.Remove(path)
+		}
+	}()
+
+	backupDir := b.backupDir()
+	if _, err := os.Stat(backupDir); err != nil {
+		if !errors.Is(err, fs.ErrNotExist) {
+			return 0, err
+		}
+		if err = os.Mkdir(backupDir, os.ModePerm); err != nil {
+			return 0, err
+		}
+	}
+
+	backupName := util.DetermineEscapePath(backupDir, path)
+	_, err = b.overwriteFile(backupName)
+	if err != nil {
+		os.Remove(backupName)
+		return 0, err
+	}
+
+	b.forceKeepBackup = true
+	size, err := file.Write(b)
+	if err != nil {
+		err = util.OverwriteError{err, backupName}
+		return size, err
+	}
+	b.forceKeepBackup = false
+
+	if !b.keepBackup() {
+		os.Remove(backupName)
+	}
+
+	err2 := file.Close()
+	if err2 != nil && err == nil {
+		err = err2
+	}
+
+	return size, err
+}

internal/buffer/search.go

@@ -2,10 +2,56 @@ package buffer
 
 import (
 	"regexp"
+	"unicode/utf8"
 
 	"github.com/zyedidia/micro/v2/internal/util"
 )
 
+// We want "^" and "$" to match only the beginning/end of a line, not the
+// beginning/end of the search region if it is in the middle of a line.
+// In that case we use padded regexps to require a rune before or after
+// the match. (This also affects other empty-string patters like "\\b".)
+// The following two flags indicate the padding used.
+const (
+	padStart = 1 << iota
+	padEnd
+)
+
+func findLineParams(b *Buffer, start, end Loc, i int, r *regexp.Regexp) ([]byte, int, int, *regexp.Regexp) {
+	l := b.LineBytes(i)
+	charpos := 0
+	padMode := 0
+
+	if i == end.Y {
+		nchars := util.CharacterCount(l)
+		end.X = util.Clamp(end.X, 0, nchars)
+		if end.X < nchars {
+			l = util.SliceStart(l, end.X+1)
+			padMode |= padEnd
+		}
+	}
+
+	if i == start.Y {
+		nchars := util.CharacterCount(l)
+		start.X = util.Clamp(start.X, 0, nchars)
+		if start.X > 0 {
+			charpos = start.X - 1
+			l = util.SliceEnd(l, charpos)
+			padMode |= padStart
+		}
+	}
+
+	if padMode == padStart {
+		r = regexp.MustCompile(".(?:" + r.String() + ")")
+	} else if padMode == padEnd {
+		r = regexp.MustCompile("(?:" + r.String() + ").")
+	} else if padMode == padStart|padEnd {
+		r = regexp.MustCompile(".(?:" + r.String() + ").")
+	}
+
+	return l, charpos, padMode, r
+}
+
 func (b *Buffer) findDown(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
 	lastcn := util.CharacterCount(b.LineBytes(b.LinesNum() - 1))
 	if start.Y > b.LinesNum()-1 {
@@ -22,30 +68,19 @@ func (b *Buffer) findDown(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
 	}
 
 	for i := start.Y; i <= end.Y; i++ {
-		l := b.LineBytes(i)
-		charpos := 0
+		l, charpos, padMode, rPadded := findLineParams(b, start, end, i, r)
 
-		if i == start.Y && start.Y == end.Y {
-			nchars := util.CharacterCount(l)
-			start.X = util.Clamp(start.X, 0, nchars)
-			end.X = util.Clamp(end.X, 0, nchars)
-			l = util.SliceStart(l, end.X)
-			l = util.SliceEnd(l, start.X)
-			charpos = start.X
-		} else if i == start.Y {
-			nchars := util.CharacterCount(l)
-			start.X = util.Clamp(start.X, 0, nchars)
-			l = util.SliceEnd(l, start.X)
-			charpos = start.X
-		} else if i == end.Y {
-			nchars := util.CharacterCount(l)
-			end.X = util.Clamp(end.X, 0, nchars)
-			l = util.SliceStart(l, end.X)
-		}
-
-		match := r.FindIndex(l)
+		match := rPadded.FindIndex(l)
 
 		if match != nil {
+			if padMode&padStart != 0 {
+				_, size := utf8.DecodeRune(l[match[0]:])
+				match[0] += size
+			}
+			if padMode&padEnd != 0 {
+				_, size := utf8.DecodeLastRune(l[:match[1]])
+				match[1] -= size
+			}
 			start := Loc{charpos + util.RunePos(l, match[0]), i}
 			end := Loc{charpos + util.RunePos(l, match[1]), i}
 			return [2]Loc{start, end}, true
@@ -70,39 +105,39 @@ func (b *Buffer) findUp(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
 	}
 
 	for i := end.Y; i >= start.Y; i-- {
-		l := b.LineBytes(i)
-		charpos := 0
-
-		if i == start.Y && start.Y == end.Y {
-			nchars := util.CharacterCount(l)
-			start.X = util.Clamp(start.X, 0, nchars)
-			end.X = util.Clamp(end.X, 0, nchars)
-			l = util.SliceStart(l, end.X)
-			l = util.SliceEnd(l, start.X)
-			charpos = start.X
-		} else if i == start.Y {
-			nchars := util.CharacterCount(l)
-			start.X = util.Clamp(start.X, 0, nchars)
-			l = util.SliceEnd(l, start.X)
-			charpos = start.X
-		} else if i == end.Y {
-			nchars := util.CharacterCount(l)
-			end.X = util.Clamp(end.X, 0, nchars)
-			l = util.SliceStart(l, end.X)
-		}
-
-		allMatches := r.FindAllIndex(l, -1)
+		charCount := util.CharacterCount(b.LineBytes(i))
+		from := Loc{0, i}.Clamp(start, end)
+		to := Loc{charCount, i}.Clamp(start, end)
 
+		allMatches := b.findAll(r, from, to)
 		if allMatches != nil {
 			match := allMatches[len(allMatches)-1]
-			start := Loc{charpos + util.RunePos(l, match[0]), i}
-			end := Loc{charpos + util.RunePos(l, match[1]), i}
-			return [2]Loc{start, end}, true
+			return [2]Loc{match[0], match[1]}, true
 		}
 	}
 	return [2]Loc{}, false
 }
 
+func (b *Buffer) findAll(r *regexp.Regexp, start, end Loc) [][2]Loc {
+	var matches [][2]Loc
+	loc := start
+	for {
+		match, found := b.findDown(r, loc, end)
+		if !found {
+			break
+		}
+		matches = append(matches, match)
+		if match[0] != match[1] {
+			loc = match[1]
+		} else if match[1] != end {
+			loc = match[1].Move(1, b)
+		} else {
+			break
+		}
+	}
+	return matches
+}
+
 // FindNext finds the next occurrence of a given string in the buffer
 // It returns the start and end location of the match (if found) and
 // a boolean indicating if it was found
@@ -146,53 +181,58 @@ func (b *Buffer) FindNext(s string, start, end, from Loc, down bool, useRegex bo
 }
 
 // ReplaceRegex replaces all occurrences of 'search' with 'replace' in the given area
-// and returns the number of replacements made and the number of runes
+// and returns the number of replacements made and the number of characters
 // added or removed on the last line of the range
 func (b *Buffer) ReplaceRegex(start, end Loc, search *regexp.Regexp, replace []byte, captureGroups bool) (int, int) {
 	if start.GreaterThan(end) {
 		start, end = end, start
 	}
 
-	netrunes := 0
-
+	charsEnd := util.CharacterCount(b.LineBytes(end.Y))
 	found := 0
 	var deltas []Delta
-	for i := start.Y; i <= end.Y; i++ {
-		l := b.lines[i].data
-		charpos := 0
 
-		if start.Y == end.Y && i == start.Y {
-			l = util.SliceStart(l, end.X)
-			l = util.SliceEnd(l, start.X)
-			charpos = start.X
-		} else if i == start.Y {
-			l = util.SliceEnd(l, start.X)
-			charpos = start.X
-		} else if i == end.Y {
-			l = util.SliceStart(l, end.X)
+	for i := start.Y; i <= end.Y; i++ {
+		l := b.LineBytes(i)
+		charCount := util.CharacterCount(l)
+		if (i == start.Y && start.X > 0) || (i == end.Y && end.X < charCount) {
+			// This replacement code works in general, but it creates a separate
+			// modification for each match. We only use it for the first and last
+			// lines, which may use padded regexps
+
+			from := Loc{0, i}.Clamp(start, end)
+			to := Loc{charCount, i}.Clamp(start, end)
+			matches := b.findAll(search, from, to)
+			found += len(matches)
+
+			for j := len(matches) - 1; j >= 0; j-- {
+				// if we counted upwards, the different deltas would interfere
+				match := matches[j]
+				var newText []byte
+				if captureGroups {
+					newText = search.ReplaceAll(b.Substr(match[0], match[1]), replace)
+				} else {
+					newText = replace
 				}
-		newText := search.ReplaceAllFunc(l, func(in []byte) []byte {
+				deltas = append(deltas, Delta{newText, match[0], match[1]})
+			}
+		} else {
+			newLine := search.ReplaceAllFunc(l, func(in []byte) []byte {
+				found++
 				var result []byte
 				if captureGroups {
-				for _, submatches := range search.FindAllSubmatchIndex(in, -1) {
-					result = search.Expand(result, replace, in, submatches)
-				}
+					match := search.FindSubmatchIndex(in)
+					result = search.Expand(result, replace, in, match)
 				} else {
 					result = replace
 				}
-			found++
-			if i == end.Y {
-				netrunes += util.CharacterCount(result) - util.CharacterCount(in)
-			}
 				return result
 			})
-
-		from := Loc{charpos, i}
-		to := Loc{charpos + util.CharacterCount(l), i}
-
-		deltas = append(deltas, Delta{newText, from, to})
+			deltas = append(deltas, Delta{newLine, Loc{0, i}, Loc{charCount, i}})
 		}
+	}
+
 	b.MultipleReplace(deltas)
 
-	return found, netrunes
+	return found, util.CharacterCount(b.LineBytes(end.Y)) - charsEnd
 }

internal/buffer/serialize.go

@@ -1,15 +1,13 @@
 package buffer
 
 import (
+	"bytes"
 	"encoding/gob"
 	"errors"
-	"io"
 	"os"
 	"path/filepath"
 	"time"
 
-	"golang.org/x/text/encoding"
-
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/util"
 )
@@ -31,16 +29,18 @@ func (b *Buffer) Serialize() error {
 		return nil
 	}
 
-	name := filepath.Join(config.ConfigDir, "buffers", util.EscapePath(b.AbsPath))
-
-	return overwriteFile(name, encoding.Nop, func(file io.Writer) error {
-		err := gob.NewEncoder(file).Encode(SerializedBuffer{
+	var buf bytes.Buffer
+	err := gob.NewEncoder(&buf).Encode(SerializedBuffer{
 		b.EventHandler,
 		b.GetActiveCursor().Loc,
 		b.ModTime,
 	})
+	if err != nil {
 		return err
-	}, false)
+	}
+
+	name := util.DetermineEscapePath(filepath.Join(config.ConfigDir, "buffers"), b.AbsPath)
+	return util.SafeWrite(name, buf.Bytes(), true)
 }
 
 // Unserialize loads the buffer info from config.ConfigDir/buffers
@@ -50,7 +50,7 @@ func (b *Buffer) Unserialize() error {
 	if b.Path == "" {
 		return nil
 	}
-	file, err := os.Open(filepath.Join(config.ConfigDir, "buffers", util.EscapePath(b.AbsPath)))
+	file, err := os.Open(util.DetermineEscapePath(filepath.Join(config.ConfigDir, "buffers"), b.AbsPath))
 	if err == nil {
 		defer file.Close()
 		var buffer SerializedBuffer

internal/buffer/settings.go

@@ -5,13 +5,22 @@ import (
 	"reflect"
 
 	"github.com/zyedidia/micro/v2/internal/config"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
 	"github.com/zyedidia/micro/v2/internal/screen"
+	"golang.org/x/text/encoding/htmlindex"
+	"golang.org/x/text/encoding/unicode"
+	luar "layeh.com/gopher-luar"
 )
 
 func (b *Buffer) ReloadSettings(reloadFiletype bool) {
 	settings := config.ParsedSettings()
+	config.UpdatePathGlobLocals(settings, b.AbsPath)
 
-	if _, ok := b.LocalSettings["filetype"]; !ok && reloadFiletype {
+	oldFiletype := b.Settings["filetype"].(string)
+
+	_, local := b.LocalSettings["filetype"]
+	_, volatile := config.VolatileSettings["filetype"]
+	if reloadFiletype && !local && !volatile {
 		// need to update filetype before updating other settings based on it
 		b.Settings["filetype"] = "unknown"
 		if v, ok := settings["filetype"]; ok {
@@ -21,9 +30,14 @@ func (b *Buffer) ReloadSettings(reloadFiletype bool) {
 
 	// update syntax rules, which will also update filetype if needed
 	b.UpdateRules()
-	settings["filetype"] = b.Settings["filetype"]
 
-	config.InitLocalSettings(settings, b.Path)
+	curFiletype := b.Settings["filetype"].(string)
+	if oldFiletype != curFiletype {
+		b.doCallbacks("filetype", oldFiletype, curFiletype)
+	}
+
+	config.UpdateFileTypeLocals(settings, curFiletype)
+
 	for k, v := range config.DefaultCommonSettings() {
 		if k == "filetype" {
 			// prevent recursion
@@ -46,7 +60,8 @@ func (b *Buffer) ReloadSettings(reloadFiletype bool) {
 }
 
 func (b *Buffer) DoSetOptionNative(option string, nativeValue interface{}) {
-	if reflect.DeepEqual(b.Settings[option], nativeValue) {
+	oldValue := b.Settings[option]
+	if reflect.DeepEqual(oldValue, nativeValue) {
 		return
 	}
 
@@ -84,6 +99,12 @@ func (b *Buffer) DoSetOptionNative(option string, nativeValue interface{}) {
 			b.UpdateRules()
 		}
 	} else if option == "encoding" {
+		enc, err := htmlindex.Get(b.Settings["encoding"].(string))
+		if err != nil {
+			enc = unicode.UTF8
+			b.Settings["encoding"] = "utf-8"
+		}
+		b.encoding = enc
 		b.isModified = true
 	} else if option == "readonly" && b.Type.Kind == BTDefault.Kind {
 		b.Type.Readonly = nativeValue.(bool)
@@ -114,9 +135,7 @@ func (b *Buffer) DoSetOptionNative(option string, nativeValue interface{}) {
 		}
 	}
 
-	if b.OptionCallback != nil {
-		b.OptionCallback(option, nativeValue)
-	}
+	b.doCallbacks(option, oldValue, nativeValue)
 }
 
 func (b *Buffer) SetOptionNative(option string, nativeValue interface{}) error {
@@ -143,3 +162,15 @@ func (b *Buffer) SetOption(option, value string) error {
 
 	return b.SetOptionNative(option, nativeValue)
 }
+
+func (b *Buffer) doCallbacks(option string, oldValue interface{}, newValue interface{}) {
+	if b.OptionCallback != nil {
+		b.OptionCallback(option, newValue)
+	}
+
+	if err := config.RunPluginFn("onBufferOptionChanged",
+		luar.New(ulua.L, b), luar.New(ulua.L, option),
+		luar.New(ulua.L, oldValue), luar.New(ulua.L, newValue)); err != nil {
+		screen.TermMessage(err)
+	}
+}

internal/clipboard/terminal.go

@@ -4,8 +4,8 @@ import (
 	"errors"
 	"time"
 
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/screen"
-	"github.com/zyedidia/tcell/v2"
 )
 
 type terminalClipboard struct{}

internal/config/colorscheme.go

@@ -6,7 +6,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/zyedidia/tcell/v2"
+	"github.com/micro-editor/tcell/v2"
 )
 
 // DefStyle is Micro's default style

internal/config/colorscheme_test.go

@@ -3,8 +3,8 @@ package config
 import (
 	"testing"
 
+	"github.com/micro-editor/tcell/v2"
 	"github.com/stretchr/testify/assert"
-	"github.com/zyedidia/tcell/v2"
 )
 
 func TestSimpleStringToStyle(t *testing.T) {

internal/config/plugin.go

@@ -143,15 +143,3 @@ func FindPlugin(name string) *Plugin {
 	}
 	return pl
 }
-
-// FindAnyPlugin does not require the plugin to be enabled
-func FindAnyPlugin(name string) *Plugin {
-	var pl *Plugin
-	for _, p := range Plugins {
-		if p.Name == name {
-			pl = p
-			break
-		}
-	}
-	return pl
-}

internal/config/plugin_installer.go

@@ -5,7 +5,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -14,8 +13,8 @@ import (
 	"sync"
 
 	"github.com/blang/semver"
+	"github.com/micro-editor/json5"
 	lua "github.com/yuin/gopher-lua"
-	"github.com/zyedidia/json5"
 	ulua "github.com/zyedidia/micro/v2/internal/lua"
 	"github.com/zyedidia/micro/v2/internal/util"
 )
@@ -396,7 +395,7 @@ func (pv *PluginVersion) DownloadAndInstall(out io.Writer) error {
 		return err
 	}
 	defer resp.Body.Close()
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return err
 	}

internal/config/plugin_installer_test.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/blang/semver"
 
-	"github.com/zyedidia/json5"
+	"github.com/micro-editor/json5"
 )
 
 func TestDependencyResolving(t *testing.T) {

internal/config/rtfiles.go

@@ -2,10 +2,8 @@ package config
 
 import (
 	"errors"
-	"io/ioutil"
 	"log"
 	"os"
-	"path"
 	"path/filepath"
 	"regexp"
 	"strings"
@@ -62,12 +60,6 @@ type realFile string
 // some asset file
 type assetFile string
 
-// some file on filesystem but with a different name
-type namedFile struct {
-	realFile
-	name string
-}
-
 // a file with the data stored in memory
 type memoryFile struct {
 	name string
@@ -87,22 +79,18 @@ func (rf realFile) Name() string {
 }
 
 func (rf realFile) Data() ([]byte, error) {
-	return ioutil.ReadFile(string(rf))
+	return os.ReadFile(string(rf))
 }
 
 func (af assetFile) Name() string {
-	fn := path.Base(string(af))
-	return fn[:len(fn)-len(path.Ext(fn))]
+	fn := filepath.Base(string(af))
+	return fn[:len(fn)-len(filepath.Ext(fn))]
 }
 
 func (af assetFile) Data() ([]byte, error) {
 	return rt.Asset(string(af))
 }
 
-func (nf namedFile) Name() string {
-	return nf.name
-}
-
 // AddRuntimeFile registers a file for the given filetype
 func AddRuntimeFile(fileType RTFiletype, file RuntimeFile) {
 	allFiles[fileType] = append(allFiles[fileType], file)
@@ -117,7 +105,7 @@ func AddRealRuntimeFile(fileType RTFiletype, file RuntimeFile) {
 // AddRuntimeFilesFromDirectory registers each file from the given directory for
 // the filetype which matches the file-pattern
 func AddRuntimeFilesFromDirectory(fileType RTFiletype, directory, pattern string) {
-	files, _ := ioutil.ReadDir(directory)
+	files, _ := os.ReadDir(directory)
 	for _, f := range files {
 		if ok, _ := filepath.Match(pattern, f.Name()); !f.IsDir() && ok {
 			fullPath := filepath.Join(directory, f.Name())
@@ -136,8 +124,8 @@ func AddRuntimeFilesFromAssets(fileType RTFiletype, directory, pattern string) {
 
 assetLoop:
 	for _, f := range files {
-		if ok, _ := path.Match(pattern, f); ok {
-			af := assetFile(path.Join(directory, f))
+		if ok, _ := filepath.Match(pattern, f); ok {
+			af := assetFile(filepath.Join(directory, f))
 			for _, rf := range realFiles[fileType] {
 				if af.Name() == rf.Name() {
 					continue assetLoop
@@ -178,7 +166,7 @@ func InitRuntimeFiles(user bool) {
 		if user {
 			AddRuntimeFilesFromDirectory(fileType, filepath.Join(ConfigDir, dir), pattern)
 		}
-		AddRuntimeFilesFromAssets(fileType, path.Join("runtime", dir), pattern)
+		AddRuntimeFilesFromAssets(fileType, filepath.Join("runtime", dir), pattern)
 	}
 
 	initRuntimeVars()
@@ -204,14 +192,14 @@ func InitPlugins() {
 
 	// Search ConfigDir for plugin-scripts
 	plugdir := filepath.Join(ConfigDir, "plug")
-	files, _ := ioutil.ReadDir(plugdir)
+	files, _ := os.ReadDir(plugdir)
 
 	isID := regexp.MustCompile(`^[_A-Za-z0-9]+$`).MatchString
 
 	for _, d := range files {
 		plugpath := filepath.Join(plugdir, d.Name())
 		if stat, err := os.Stat(plugpath); err == nil && stat.IsDir() {
-			srcs, _ := ioutil.ReadDir(plugpath)
+			srcs, _ := os.ReadDir(plugpath)
 			p := new(Plugin)
 			p.Name = d.Name()
 			p.DirName = d.Name()
@@ -219,7 +207,7 @@ func InitPlugins() {
 				if strings.HasSuffix(f.Name(), ".lua") {
 					p.Srcs = append(p.Srcs, realFile(filepath.Join(plugdir, d.Name(), f.Name())))
 				} else if strings.HasSuffix(f.Name(), ".json") {
-					data, err := ioutil.ReadFile(filepath.Join(plugdir, d.Name(), f.Name()))
+					data, err := os.ReadFile(filepath.Join(plugdir, d.Name(), f.Name()))
 					if err != nil {
 						continue
 					}
@@ -311,7 +299,7 @@ func PluginAddRuntimeFile(plugin string, filetype RTFiletype, filePath string) e
 	if _, err := os.Stat(fullpath); err == nil {
 		AddRealRuntimeFile(filetype, realFile(fullpath))
 	} else {
-		fullpath = path.Join("runtime", "plugins", pldir, filePath)
+		fullpath = filepath.Join("runtime", "plugins", pldir, filePath)
 		AddRuntimeFile(filetype, assetFile(fullpath))
 	}
 	return nil
@@ -328,7 +316,7 @@ func PluginAddRuntimeFilesFromDirectory(plugin string, filetype RTFiletype, dire
 	if _, err := os.Stat(fullpath); err == nil {
 		AddRuntimeFilesFromDirectory(filetype, fullpath, pattern)
 	} else {
-		fullpath = path.Join("runtime", "plugins", pldir, directory)
+		fullpath = filepath.Join("runtime", "plugins", pldir, directory)
 		AddRuntimeFilesFromAssets(filetype, fullpath, pattern)
 	}
 	return nil

internal/config/settings.go

@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -12,8 +11,8 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/micro-editor/json5"
 	"github.com/zyedidia/glob"
-	"github.com/zyedidia/json5"
 	"github.com/zyedidia/micro/v2/internal/util"
 	"golang.org/x/text/encoding/htmlindex"
 )
@@ -29,21 +28,26 @@ var optionValidators = map[string]optionValidator{
 	"detectlimit":     validateNonNegativeValue,
 	"encoding":        validateEncoding,
 	"fileformat":      validateChoice,
+	"helpsplit":       validateChoice,
 	"matchbracestyle": validateChoice,
 	"multiopen":       validateChoice,
+	"pageoverlap":     validateNonNegativeValue,
 	"reload":          validateChoice,
 	"scrollmargin":    validateNonNegativeValue,
 	"scrollspeed":     validateNonNegativeValue,
 	"tabsize":         validatePositiveValue,
+	"truecolor":       validateChoice,
 }
 
 // a list of settings with pre-defined choices
 var OptionChoices = map[string][]string{
 	"clipboard":       {"internal", "external", "terminal"},
 	"fileformat":      {"unix", "dos"},
+	"helpsplit":       {"hsplit", "vsplit"},
 	"matchbracestyle": {"underline", "highlight"},
 	"multiopen":       {"tab", "hsplit", "vsplit"},
 	"reload":          {"prompt", "auto", "disabled"},
+	"truecolor":       {"auto", "on", "off"},
 }
 
 // a list of settings that can be globally and locally modified and their
@@ -66,20 +70,21 @@ var defaultCommonSettings = map[string]interface{}{
 	"hlsearch":        false,
 	"hltaberrors":     false,
 	"hltrailingws":    false,
-	"incsearch":       true,
 	"ignorecase":      true,
+	"incsearch":       true,
 	"indentchar":      " ",
 	"keepautoindent":  false,
 	"matchbrace":      true,
 	"matchbraceleft":  true,
 	"matchbracestyle": "underline",
 	"mkparents":       false,
+	"pageoverlap":     float64(2),
 	"permbackup":      false,
 	"readonly":        false,
+	"relativeruler":   false,
 	"reload":          "prompt",
 	"rmtrailingws":    false,
 	"ruler":           true,
-	"relativeruler":   false,
 	"savecursor":      false,
 	"saveundo":        false,
 	"scrollbar":       false,
@@ -89,13 +94,14 @@ var defaultCommonSettings = map[string]interface{}{
 	"softwrap":        false,
 	"splitbottom":     true,
 	"splitright":      true,
-	"statusformatl":   "$(filename) $(modified)($(line),$(col)) $(status.paste)| ft:$(opt:filetype) | $(opt:fileformat) | $(opt:encoding)",
+	"statusformatl":   "$(filename) $(modified)$(overwrite)($(line),$(col)) $(status.paste)| ft:$(opt:filetype) | $(opt:fileformat) | $(opt:encoding)",
 	"statusformatr":   "$(bind:ToggleKeyMenu): bindings, $(bind:ToggleHelp): help",
 	"statusline":      true,
 	"syntax":          true,
 	"tabmovement":     false,
 	"tabsize":         float64(4),
 	"tabstospaces":    false,
+	"truecolor":       "auto",
 	"useprimary":      true,
 	"wordwrap":        false,
 }
@@ -109,6 +115,7 @@ var DefaultGlobalOnlySettings = map[string]interface{}{
 	"divchars":       "|-",
 	"divreverse":     true,
 	"fakecursor":     false,
+	"helpsplit":      "hsplit",
 	"infobar":        true,
 	"keymenu":        false,
 	"mouse":          true,
@@ -151,6 +158,10 @@ var (
 	VolatileSettings map[string]bool
 )
 
+func writeFile(name string, txt []byte) error {
+	return util.SafeWrite(name, txt, false)
+}
+
 func init() {
 	ModifiedSettings = make(map[string]bool)
 	VolatileSettings = make(map[string]bool)
@@ -217,7 +228,7 @@ func ReadSettings() error {
 	parsedSettings = make(map[string]interface{})
 	filename := filepath.Join(ConfigDir, "settings.json")
 	if _, e := os.Stat(filename); e == nil {
-		input, err := ioutil.ReadFile(filename)
+		input, err := os.ReadFile(filename)
 		if err != nil {
 			settingsParseError = true
 			return errors.New("Error reading settings.json file: " + err.Error())
@@ -283,22 +294,31 @@ func InitGlobalSettings() error {
 	return err
 }
 
-// InitLocalSettings scans the json in settings.json and sets the options locally based
-// on whether the filetype or path matches ft or glob local settings
+// UpdatePathGlobLocals scans the already parsed settings and sets the options locally
+// based on whether the path matches a glob
 // Must be called after ReadSettings
-func InitLocalSettings(settings map[string]interface{}, path string) {
+func UpdatePathGlobLocals(settings map[string]interface{}, path string) {
 	for k, v := range parsedSettings {
-		if strings.HasPrefix(reflect.TypeOf(v).String(), "map") {
-			if strings.HasPrefix(k, "ft:") {
-				if settings["filetype"].(string) == k[3:] {
+		if strings.HasPrefix(reflect.TypeOf(v).String(), "map") && !strings.HasPrefix(k, "ft:") {
+			g, _ := glob.Compile(k)
+			if g.MatchString(path) {
 				for k1, v1 := range v.(map[string]interface{}) {
 					settings[k1] = v1
 				}
 			}
-			} else {
-				g, _ := glob.Compile(k)
-				if g.MatchString(path) {
+		}
+	}
+}
+
+// UpdateFileTypeLocals scans the already parsed settings and sets the options locally
+// based on whether the filetype matches to "ft:"
+// Must be called after ReadSettings
+func UpdateFileTypeLocals(settings map[string]interface{}, filetype string) {
+	for k, v := range parsedSettings {
+		if strings.HasPrefix(reflect.TypeOf(v).String(), "map") && strings.HasPrefix(k, "ft:") {
+			if filetype == k[3:] {
 				for k1, v1 := range v.(map[string]interface{}) {
+					if k1 != "filetype" {
 						settings[k1] = v1
 					}
 				}
@@ -342,7 +362,8 @@ func WriteSettings(filename string) error {
 		}
 
 		txt, _ := json.MarshalIndent(parsedSettings, "", "    ")
-		err = ioutil.WriteFile(filename, append(txt, '\n'), 0644)
+		txt = append(txt, '\n')
+		err = writeFile(filename, txt)
 	}
 	return err
 }
@@ -363,8 +384,9 @@ func OverwriteSettings(filename string) error {
 			}
 		}
 
-		txt, _ := json.MarshalIndent(settings, "", "    ")
-		err = ioutil.WriteFile(filename, append(txt, '\n'), 0644)
+		txt, _ := json.MarshalIndent(parsedSettings, "", "    ")
+		txt = append(txt, '\n')
+		err = writeFile(filename, txt)
 	}
 	return err
 }

internal/display/bufwindow.go

@@ -4,11 +4,11 @@ import (
 	"strconv"
 
 	runewidth "github.com/mattn/go-runewidth"
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"github.com/zyedidia/tcell/v2"
 )
 
 // The BufWindow provides a way of displaying a certain section of a buffer.
@@ -58,9 +58,15 @@ func (w *BufWindow) SetBuffer(b *buffer.Buffer) {
 		if option == "softwrap" || option == "wordwrap" {
 			w.Relocate()
 			for _, c := range w.Buf.GetCursors() {
-				c.LastVisualX = c.GetVisualX()
+				c.LastWrappedVisualX = c.GetVisualX(true)
 			}
 		}
+
+		if option == "diffgutter" || option == "ruler" || option == "scrollbar" ||
+			option == "statusline" {
+			w.updateDisplayInfo()
+			w.Relocate()
+		}
 	}
 	b.GetVisualX = func(loc buffer.Loc) int {
 		return w.VLocFromLoc(loc).VisualX
@@ -160,7 +166,7 @@ func (w *BufWindow) updateDisplayInfo() {
 
 	if w.bufWidth != prevBufWidth && w.Buf.Settings["softwrap"].(bool) {
 		for _, c := range w.Buf.GetCursors() {
-			c.LastVisualX = c.GetVisualX()
+			c.LastWrappedVisualX = c.GetVisualX(true)
 		}
 	}
 }
@@ -238,7 +244,7 @@ func (w *BufWindow) Relocate() bool {
 
 	// horizontal relocation (scrolling)
 	if !b.Settings["softwrap"].(bool) {
-		cx := activeC.GetVisualX()
+		cx := activeC.GetVisualX(false)
 		rw := runewidth.RuneWidth(activeC.RuneUnder(activeC.X))
 		if rw == 0 {
 			rw = 1 // tab or newline
@@ -248,8 +254,8 @@ func (w *BufWindow) Relocate() bool {
 			w.StartCol = cx
 			ret = true
 		}
-		if cx+w.gutterOffset+rw > w.StartCol+w.Width {
-			w.StartCol = cx - w.Width + w.gutterOffset + rw
+		if cx+rw > w.StartCol+w.bufWidth {
+			w.StartCol = cx - w.bufWidth + rw
 			ret = true
 		}
 	}
@@ -449,7 +455,7 @@ func (w *BufWindow) displayBuffer() {
 
 		currentLine := false
 		for _, c := range cursors {
-			if bloc.Y == c.Y && w.active {
+			if !c.HasSelection() && bloc.Y == c.Y && w.active {
 				currentLine = true
 				break
 			}
@@ -619,6 +625,8 @@ func (w *BufWindow) displayBuffer() {
 
 		wrap := func() {
 			vloc.X = 0
+
+			if vloc.Y >= 0 {
 				if w.hasMessage {
 					w.drawGutter(&vloc, &bloc)
 				}
@@ -630,6 +638,9 @@ func (w *BufWindow) displayBuffer() {
 				if b.Settings["ruler"].(bool) {
 					w.drawLineNum(lineNumStyle, true, &vloc, &bloc)
 				}
+			} else {
+				vloc.X = w.gutterOffset
+			}
 		}
 
 		type glyph struct {

internal/display/infowindow.go

@@ -2,12 +2,12 @@ package display
 
 import (
 	runewidth "github.com/mattn/go-runewidth"
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/info"
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"github.com/zyedidia/tcell/v2"
 )
 
 type InfoWindow struct {

internal/display/softwrap.go

@@ -291,13 +291,7 @@ func (w *BufWindow) diff(s1, s2 SLoc) int {
 // within the buffer boundaries.
 func (w *BufWindow) Scroll(s SLoc, n int) SLoc {
 	if !w.Buf.Settings["softwrap"].(bool) {
-		s.Line += n
-		if s.Line < 0 {
-			s.Line = 0
-		}
-		if s.Line > w.Buf.LinesNum()-1 {
-			s.Line = w.Buf.LinesNum() - 1
-		}
+		s.Line = util.Clamp(s.Line+n, 0, w.Buf.LinesNum()-1)
 		return s
 	}
 	return w.scroll(s, n)

internal/display/statusline.go

@@ -47,6 +47,12 @@ var statusInfo = map[string]func(*buffer.Buffer) string{
 		}
 		return ""
 	},
+	"overwrite": func(b *buffer.Buffer) string {
+		if b.OverwriteMode && !b.Type.Readonly {
+			return "[ovwr] "
+		}
+		return ""
+	},
 	"lines": func(b *buffer.Buffer) string {
 		return strconv.Itoa(b.LinesNum())
 	},

internal/display/tabwindow.go

@@ -2,7 +2,7 @@ package display
 
 import (
 	runewidth "github.com/mattn/go-runewidth"
-	"github.com/zyedidia/tcell/v2"
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/screen"

internal/display/termwindow.go

@@ -1,13 +1,13 @@
 package display
 
 import (
+	"github.com/micro-editor/tcell/v2"
+	"github.com/micro-editor/terminal"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/shell"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"github.com/zyedidia/tcell/v2"
-	"github.com/zyedidia/terminal"
 )
 
 type TermWindow struct {

internal/info/history.go

@@ -1,12 +1,16 @@
 package info
 
 import (
+	"bytes"
 	"encoding/gob"
+	"errors"
+	"io/fs"
 	"os"
 	"path/filepath"
 	"strings"
 
 	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/micro/v2/internal/util"
 )
 
@@ -17,24 +21,23 @@ func (i *InfoBuf) LoadHistory() {
 	if config.GetGlobalOption("savehistory").(bool) {
 		file, err := os.Open(filepath.Join(config.ConfigDir, "buffers", "history"))
 		var decodedMap map[string][]string
-		if err == nil {
-			defer file.Close()
-			decoder := gob.NewDecoder(file)
-			err = decoder.Decode(&decodedMap)
-
 		if err != nil {
+			if !errors.Is(err, fs.ErrNotExist) {
 				i.Error("Error loading history: ", err)
+			}
 			return
 		}
+
+		defer file.Close()
+		err = gob.NewDecoder(file).Decode(&decodedMap)
+		if err != nil {
+			i.Error("Error decoding history: ", err)
+			return
 		}
 
 		if decodedMap != nil {
 			i.History = decodedMap
-		} else {
-			i.History = make(map[string][]string)
 		}
-	} else {
-		i.History = make(map[string][]string)
 	}
 }
 
@@ -49,16 +52,18 @@ func (i *InfoBuf) SaveHistory() {
 			}
 		}
 
-		file, err := os.Create(filepath.Join(config.ConfigDir, "buffers", "history"))
-		if err == nil {
-			defer file.Close()
-			encoder := gob.NewEncoder(file)
-
-			err = encoder.Encode(i.History)
+		var buf bytes.Buffer
+		err := gob.NewEncoder(&buf).Encode(i.History)
 		if err != nil {
-				i.Error("Error saving history:", err)
+			screen.TermMessage("Error encoding history: ", err)
 			return
 		}
+
+		filename := filepath.Join(config.ConfigDir, "buffers", "history")
+		err = util.SafeWrite(filename, buf.Bytes(), true)
+		if err != nil {
+			screen.TermMessage("Error saving history: ", err)
+			return
 		}
 	}
 }

internal/lua/lua.go

@@ -125,6 +125,7 @@ func importIo() *lua.LTable {
 	L.SetField(pkg, "MultiWriter", luar.New(L, io.MultiWriter))
 	L.SetField(pkg, "NewSectionReader", luar.New(L, io.NewSectionReader))
 	L.SetField(pkg, "Pipe", luar.New(L, io.Pipe))
+	L.SetField(pkg, "ReadAll", luar.New(L, io.ReadAll))
 	L.SetField(pkg, "ReadAtLeast", luar.New(L, io.ReadAtLeast))
 	L.SetField(pkg, "ReadFull", luar.New(L, io.ReadFull))
 	L.SetField(pkg, "TeeReader", luar.New(L, io.TeeReader))
@@ -370,6 +371,8 @@ func importOs() *lua.LTable {
 	L.SetField(pkg, "PathListSeparator", luar.New(L, os.PathListSeparator))
 	L.SetField(pkg, "PathSeparator", luar.New(L, os.PathSeparator))
 	L.SetField(pkg, "Pipe", luar.New(L, os.Pipe))
+	L.SetField(pkg, "ReadDir", luar.New(L, os.ReadDir))
+	L.SetField(pkg, "ReadFile", luar.New(L, os.ReadFile))
 	L.SetField(pkg, "Readlink", luar.New(L, os.Readlink))
 	L.SetField(pkg, "Remove", luar.New(L, os.Remove))
 	L.SetField(pkg, "RemoveAll", luar.New(L, os.RemoveAll))
@@ -388,6 +391,7 @@ func importOs() *lua.LTable {
 	L.SetField(pkg, "TempDir", luar.New(L, os.TempDir))
 	L.SetField(pkg, "Truncate", luar.New(L, os.Truncate))
 	L.SetField(pkg, "UserHomeDir", luar.New(L, os.UserHomeDir))
+	L.SetField(pkg, "WriteFile", luar.New(L, os.WriteFile))
 
 	return pkg
 }
@@ -423,7 +427,6 @@ func importPath() *lua.LTable {
 func importFilePath() *lua.LTable {
 	pkg := L.NewTable()
 
-	L.SetField(pkg, "Join", luar.New(L, filepath.Join))
 	L.SetField(pkg, "Abs", luar.New(L, filepath.Abs))
 	L.SetField(pkg, "Base", luar.New(L, filepath.Base))
 	L.SetField(pkg, "Clean", luar.New(L, filepath.Clean))

internal/screen/screen.go

@@ -6,9 +6,9 @@ import (
 	"os"
 	"sync"
 
+	"github.com/micro-editor/tcell/v2"
 	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/micro/v2/internal/util"
-	"github.com/zyedidia/tcell/v2"
 )
 
 // Screen is the tcell screen we use to draw to the terminal
@@ -33,6 +33,12 @@ var lock sync.Mutex
 // written to even if no event user event has occurred
 var drawChan chan bool
 
+// rawSeq is the list of raw escape sequences that are bound to some actions
+// via keybindings and thus should be parsed by tcell. We need to register
+// them in tcell every time we reinitialize the screen, so we need to remember
+// them in a list
+var rawSeq = make([]string, 0)
+
 // Lock locks the screen lock
 func Lock() {
 	lock.Lock()
@@ -121,6 +127,34 @@ func SetContent(x, y int, mainc rune, combc []rune, style tcell.Style) {
 	}
 }
 
+// RegisterRawSeq registers a raw escape sequence that should be parsed by tcell
+func RegisterRawSeq(r string) {
+	for _, seq := range rawSeq {
+		if seq == r {
+			return
+		}
+	}
+	rawSeq = append(rawSeq, r)
+
+	if Screen != nil {
+		Screen.RegisterRawSeq(r)
+	}
+}
+
+// UnregisterRawSeq unregisters a raw escape sequence that should be parsed by tcell
+func UnregisterRawSeq(r string) {
+	for i, seq := range rawSeq {
+		if seq == r {
+			rawSeq[i] = rawSeq[len(rawSeq)-1]
+			rawSeq = rawSeq[:len(rawSeq)-1]
+		}
+	}
+
+	if Screen != nil {
+		Screen.UnregisterRawSeq(r)
+	}
+}
+
 // TempFini shuts the screen down temporarily
 func TempFini() bool {
 	screenWasNil := Screen == nil
@@ -150,10 +184,13 @@ func Init() error {
 	drawChan = make(chan bool, 8)
 
 	// Should we enable true color?
-	truecolor := os.Getenv("MICRO_TRUECOLOR") == "1"
-
-	if !truecolor {
+	truecolor := config.GetGlobalOption("truecolor").(string)
+	if truecolor == "on" || (truecolor == "auto" && os.Getenv("MICRO_TRUECOLOR") == "1") {
+		os.Setenv("TCELL_TRUECOLOR", "enable")
+	} else if truecolor == "off" {
 		os.Setenv("TCELL_TRUECOLOR", "disable")
+	} else {
+		// For "auto", tcell already autodetects truecolor by default
 	}
 
 	var oldTerm string
@@ -195,6 +232,10 @@ func Init() error {
 		Screen.EnableMouse()
 	}
 
+	for _, r := range rawSeq {
+		Screen.RegisterRawSeq(r)
+	}
+
 	return nil
 }
 

internal/shell/job.go

@@ -78,8 +78,10 @@ func JobSpawn(cmdName string, cmdArgs []string, onStdout, onStderr, onExit func(
 	go func() {
 		// Run the process in the background and create the onExit callback
 		proc.Run()
+		if onExit != nil {
 			jobFunc := JobFunction{onExit, outbuf.String(), userargs}
 			Jobs <- jobFunc
+		}
 	}()
 
 	return &Job{proc, stdin}

internal/shell/terminal.go

@@ -5,9 +5,9 @@ import (
 	"os/exec"
 	"strconv"
 
+	"github.com/micro-editor/terminal"
 	"github.com/zyedidia/micro/v2/internal/buffer"
 	"github.com/zyedidia/micro/v2/internal/screen"
-	"github.com/zyedidia/terminal"
 )
 
 type TermType int

internal/util/util.go

@@ -6,7 +6,9 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/fs"
 	"net/http"
+	"net/url"
 	"os"
 	"os/user"
 	"path/filepath"
@@ -43,8 +45,44 @@ var (
 	Stdout *bytes.Buffer
 	// Sigterm is a channel where micro exits when written
 	Sigterm chan os.Signal
+
+	// To be used for fails on (over-)write with safe writes
+	ErrOverwrite = OverwriteError{}
 )
 
+// To be used for file writes before umask is applied
+const FileMode os.FileMode = 0666
+
+const OverwriteFailMsg = `An error occurred while writing to the file:
+
+%s
+
+The file may be corrupted now. The good news is that it has been
+successfully backed up. Next time you open this file with Micro,
+Micro will ask if you want to recover it from the backup.
+
+The backup path is:
+
+%s`
+
+// OverwriteError is a custom error to add additional information
+type OverwriteError struct {
+	What       error
+	BackupName string
+}
+
+func (e OverwriteError) Error() string {
+	return fmt.Sprintf(OverwriteFailMsg, e.What, e.BackupName)
+}
+
+func (e OverwriteError) Is(target error) bool {
+	return target == ErrOverwrite
+}
+
+func (e OverwriteError) Unwrap() error {
+	return e.What
+}
+
 func init() {
 	var err error
 	SemVersion, err = semver.Make(Version)
@@ -233,18 +271,6 @@ func IsNonWordChar(r rune) bool {
 	return !IsWordChar(r)
 }
 
-// IsUpperWordChar returns whether or not a rune is an 'upper word character'
-// Upper word characters are defined as numbers, upper-case letters or sub-word delimiters
-func IsUpperWordChar(r rune) bool {
-	return IsUpperAlphanumeric(r) || IsSubwordDelimiter(r)
-}
-
-// IsLowerWordChar returns whether or not a rune is a 'lower word character'
-// Lower word characters are defined as numbers, lower-case letters or sub-word delimiters
-func IsLowerWordChar(r rune) bool {
-	return IsLowerAlphanumeric(r) || IsSubwordDelimiter(r)
-}
-
 // IsSubwordDelimiter returns whether or not a rune is a 'sub-word delimiter character'
 // i.e. is considered a part of the word and is used as a delimiter between sub-words of the word.
 // For now the only sub-word delimiter character is '_'.
@@ -332,6 +358,28 @@ func RunePos(b []byte, i int) int {
 	return CharacterCount(b[:i])
 }
 
+// IndexAnyUnquoted returns the first position in s of a character from chars.
+// Escaped (with backslash) and quoted (with single or double quotes) characters
+// are ignored. Returns -1 if not successful
+func IndexAnyUnquoted(s, chars string) int {
+	var e bool
+	var q rune
+	for i, r := range s {
+		if e {
+			e = false
+		} else if (q == 0 || q == '"') && r == '\\' {
+			e = true
+		} else if r == q {
+			q = 0
+		} else if q == 0 && (r == '\'' || r == '"') {
+			q = r
+		} else if q == 0 && strings.IndexRune(chars, r) >= 0 {
+			return i
+		}
+	}
+	return -1
+}
+
 // MakeRelative will attempt to make a relative path between path and base
 func MakeRelative(path, base string) (string, error) {
 	if len(path) > 0 {
@@ -398,8 +446,17 @@ func GetModTime(path string) (time.Time, error) {
 	return info.ModTime(), nil
 }
 
-// EscapePath replaces every path separator in a given path with a %
-func EscapePath(path string) string {
+func AppendBackupSuffix(path string) string {
+	return path + ".micro-backup"
+}
+
+// EscapePathUrl encodes the path in URL query form
+func EscapePathUrl(path string) string {
+	return url.QueryEscape(filepath.ToSlash(path))
+}
+
+// EscapePathLegacy replaces every path separator in a given path with a %
+func EscapePathLegacy(path string) string {
 	path = filepath.ToSlash(path)
 	if runtime.GOOS == "windows" {
 		// ':' is not valid in a path name on Windows but is ok on Unix
@@ -408,6 +465,24 @@ func EscapePath(path string) string {
 	return strings.ReplaceAll(path, "/", "%")
 }
 
+// DetermineEscapePath escapes a path, determining whether it should be escaped
+// using URL encoding (preferred, since it encodes unambiguously) or
+// legacy encoding with '%' (for backward compatibility, if the legacy-escaped
+// path exists in the given directory).
+func DetermineEscapePath(dir string, path string) string {
+	url := filepath.Join(dir, EscapePathUrl(path))
+	if _, err := os.Stat(url); err == nil {
+		return url
+	}
+
+	legacy := filepath.Join(dir, EscapePathLegacy(path))
+	if _, err := os.Stat(legacy); err == nil {
+		return legacy
+	}
+
+	return url
+}
+
 // GetLeadingWhitespace returns the leading whitespace of the given byte array
 func GetLeadingWhitespace(b []byte) []byte {
 	ws := []byte{}
@@ -510,11 +585,6 @@ func IsAutocomplete(c rune) bool {
 	return c == '.' || IsWordChar(c)
 }
 
-// ParseSpecial replaces escaped ts with '\t'.
-func ParseSpecial(s string) string {
-	return strings.ReplaceAll(s, "\\t", "\t")
-}
-
 // String converts a byte array to a string (for lua plugins)
 func String(s []byte) string {
 	return string(s)
@@ -585,3 +655,77 @@ func HttpRequest(method string, url string, headers []string) (resp *http.Respon
 	}
 	return client.Do(req)
 }
+
+// SafeWrite writes bytes to a file in a "safe" way, preventing loss of the
+// contents of the file if it fails to write the new contents.
+// This means that the file is not overwritten directly but by writing to a
+// temporary file first.
+//
+// If rename is true, write is performed atomically, by renaming the temporary
+// file to the target file after the data is successfully written to the
+// temporary file. This guarantees that the file will not remain in a corrupted
+// state, but it also has limitations, e.g. the file should not be a symlink
+// (otherwise SafeWrite silently replaces this symlink with a regular file),
+// the file creation date in Linux is not preserved (since the file inode
+// changes) etc. Use SafeWrite with rename=true for files that are only created
+// and used by micro for its own needs and are not supposed to be used directly
+// by the user.
+//
+// If rename is false, write is performed by overwriting the target file after
+// the data is successfully written to the temporary file.
+// This means that the target file may remain corrupted if overwrite fails,
+// but in such case the temporary file is preserved as a backup so the file
+// can be recovered later. So it is less convenient than atomic write but more
+// universal. Use SafeWrite with rename=false for files that may be managed
+// directly by the user, like settings.json and bindings.json.
+func SafeWrite(path string, bytes []byte, rename bool) error {
+	var err error
+	if _, err = os.Stat(path); err != nil {
+		if !errors.Is(err, fs.ErrNotExist) {
+			return err
+		}
+		// Force rename for new files!
+		rename = true
+	}
+
+	var file *os.File
+	if !rename {
+		file, err = os.OpenFile(path, os.O_WRONLY|os.O_CREATE, FileMode)
+		if err != nil {
+			return err
+		}
+		defer file.Close()
+	}
+
+	tmp := AppendBackupSuffix(path)
+	err = os.WriteFile(tmp, bytes, FileMode)
+	if err != nil {
+		os.Remove(tmp)
+		return err
+	}
+
+	if rename {
+		err = os.Rename(tmp, path)
+	} else {
+		err = file.Truncate(0)
+		if err == nil {
+			_, err = file.Write(bytes)
+		}
+		if err == nil {
+			err = file.Sync()
+		}
+	}
+	if err != nil {
+		if rename {
+			os.Remove(tmp)
+		} else {
+			err = OverwriteError{err, tmp}
+		}
+		return err
+	}
+
+	if !rename {
+		os.Remove(tmp)
+	}
+	return nil
+}

internal/views/splits.go

@@ -439,11 +439,12 @@ func (n *Node) VSplit(right bool) uint64 {
 }
 
 // unsplits the child of a split
-func (n *Node) unsplit(i int, h bool) {
+func (n *Node) unsplit(i int) {
 	copy(n.children[i:], n.children[i+1:])
 	n.children[len(n.children)-1] = nil
 	n.children = n.children[:len(n.children)-1]
 
+	h := n.Kind == STVert
 	nonrs, numr := n.getResizeInfo(h)
 	if numr == 0 {
 		// This means that this was the last child
@@ -470,18 +471,62 @@ func (n *Node) Unsplit() bool {
 			ind = i
 		}
 	}
-	if n.parent.Kind == STVert {
-		n.parent.unsplit(ind, true)
-	} else {
-		n.parent.unsplit(ind, false)
-	}
-
+	n.parent.unsplit(ind)
 	if n.parent.IsLeaf() {
 		return n.parent.Unsplit()
 	}
+
+	n.parent.flatten()
 	return true
 }
 
+// flattens the tree by removing unnecessary intermediate parents that have only one child
+// and handles the side effect of it
+func (n *Node) flatten() {
+	if n.parent == nil || len(n.children) != 1 {
+		return
+	}
+
+	ind := 0
+	for i, c := range n.parent.children {
+		if c.id == n.id {
+			ind = i
+		}
+	}
+
+	// Replace current node with its child node to remove chained parent
+	successor := n.children[0]
+	n.parent.children[ind] = successor
+	successor.parent = n.parent
+
+	// Maintain the tree in a consistent state: any child node's kind (horiz vs vert)
+	// should be the opposite of its parent's kind.
+	if successor.IsLeaf() {
+		successor.Kind = n.Kind
+	} else {
+		// If the successor node has children, that means it is a chained parent as well.
+		// Therefore it can be replaced by its own children.
+		origsize := len(n.parent.children)
+
+		// Let's say we have 5 children and want to replace [2] with its children [a] [b] [c]
+		// [0] [1] [2] [3] [4] --> [0] [1] [a] [b] [c] [3] [4]
+		// insertcount will be `3 - 1 = 2` in this case
+		insertcount := len(successor.children) - 1
+
+		n.parent.children = append(n.parent.children, make([]*Node, insertcount)...)
+		copy(n.parent.children[ind+insertcount+1:], n.parent.children[ind+1:origsize])
+		copy(n.parent.children[ind:], successor.children)
+
+		for i := 0; i < len(successor.children); i++ {
+			n.parent.children[ind+i].parent = n.parent
+		}
+	}
+
+	// Update propW and propH since the parent of the children has been updated,
+	// so the children have new siblings
+	n.parent.markSizes()
+}
+
 // String returns the string form of the node and all children (used for debugging)
 func (n *Node) String() string {
 	var strf func(n *Node, ident int) string

pkg/highlight/highlighter.go

@@ -51,19 +51,6 @@ func runePos(p int, str []byte) int {
 	return CharacterCount(str[:p])
 }
 
-func combineLineMatch(src, dst LineMatch) LineMatch {
-	for k, v := range src {
-		if g, ok := dst[k]; ok {
-			if g == 0 {
-				dst[k] = v
-			}
-		} else {
-			dst[k] = v
-		}
-	}
-	return dst
-}
-
 // A State represents the region at the end of a line
 type State *region
 
@@ -175,7 +162,7 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 				if curRegion.group == curRegion.limitGroup || p.group == curRegion.limitGroup {
 					matches := findAllIndex(p.regex, line)
 					for _, m := range matches {
-						if ((endLoc == nil) || (m[0] < endLoc[0])) {
+						if (endLoc == nil) || (m[0] < endLoc[0]) {
 							for i := m[0]; i < m[1]; i++ {
 								fullHighlights[i] = p.group
 							}

pkg/highlight/parser.go

@@ -258,7 +258,7 @@ func ParseDef(f *File, header *Header) (s *Def, err error) {
 
 	if s.rules == nil {
 		// allow empty rules
-		s.rules = new(rules)
+		s.rules = &rules{}
 	}
 
 	return s, err
@@ -476,11 +476,18 @@ func parseRegion(group string, regionInfo map[interface{}]interface{}, prevRegio
 		r.limitGroup = r.group
 	}
 
-	r.rules, err = parseRules(regionInfo["rules"].([]interface{}), r)
-
+	// rules are optional
+	if rules, ok := regionInfo["rules"]; ok {
+		r.rules, err = parseRules(rules.([]interface{}), r)
 		if err != nil {
 			return nil, err
 		}
+	}
+
+	if r.rules == nil {
+		// allow empty rules
+		r.rules = &rules{}
+	}
 
 	return r, nil
 }

runtime/colorschemes/sunny-day.micro

@@ -24,6 +24,6 @@ color-link gutter-warning "88"
 color-link cursor-line "229"
 #color-link color-column "196"
 color-link current-line-number "246"
-color-line match-brace "230,22"
+color-link match-brace "230,22"
 color-link tab-error "210"
 color-link trailingws "210"

runtime/help/colors.md

@@ -47,10 +47,7 @@ color support comes in three flavors.
   displaying any colorscheme, but it should be noted that the user-configured
   16-color palette is ignored when using true-color mode (this means the
   colors while using the terminal emulator will be slightly off). Not all
-  terminals support true color but at this point most do. True color
-  support in micro is off by default but can be enabled by setting the
-  environment variable `MICRO_TRUECOLOR` to 1.  In addition your terminal
-  must support it (usually indicated by setting `$COLORTERM` to `truecolor`).
+  terminals support true color but at this point most do (see below).
   True-color colorschemes in micro typically end with `-tc`, such as
   `solarized-tc`, `atom-dark`, `material-tc`, etc... If true color is not
   enabled but a true color colorscheme is used, micro will do its best to
@@ -84,11 +81,12 @@ These may vary widely based on the 16 colors selected for your terminal.
 
 ### True color
 
-True color requires your terminal to support it. This means that the
-environment variable `COLORTERM` should have the value `truecolor`, `24bit`,
-or `24-bit`. In addition, to enable true color in micro, the environment
-variable `MICRO_TRUECOLOR` must be set to 1. Note that you have to create
-and set this variable yourself.
+Micro enables true color support by default as long as it detects that the
+terminal supports it (which is usually indicated by the environment variable
+`COLORTERM` being set to `truecolor`, `24bit` or `24-bit`). You can also force
+enabling it unconditionally by setting the option `truecolor` to `on` (or
+alternatively by setting the environment variable `MICRO_TRUECOLOR` to 1, which
+is supported for backward compatibility).
 
 * `solarized-tc`: this is the solarized colorscheme for true color.
 * `atom-dark`: this colorscheme is based off of Atom's "dark" colorscheme.
@@ -177,10 +175,14 @@ Here is a list of the colorscheme groups that you can use:
 * todo
 * selection (Color of the text selection)
 * statusline (Color of the statusline)
+* statusline.inactive (Color of the statusline of inactive split panes)
+* statusline.suggestions (Color of the autocomplete suggestions menu)
 * tabbar (Color of the tabbar that lists open files)
+* tabbar.active (Color of the active tab in the tabbar)
 * indent-char (Color of the character which indicates tabs if the option is
   enabled)
 * line-number
+* gutter-info
 * gutter-error
 * gutter-warning
 * diff-added
@@ -371,7 +373,6 @@ highlighted. For example:
     start: "\""
     end: "\""
     skip: "\\."
-    rules: []
 ```
 
 #### Includes

runtime/help/commands.md

@@ -21,10 +21,16 @@ quotes here but these are not necessary when entering the command in micro.
    This command will modify `bindings.json` and overwrite any bindings to
    `key` that already exist.
 
-* `help ['topic']`: opens the corresponding help topic. If no topic is provided
-   opens the default help screen. Help topics are stored as `.md` files in the
-   `runtime/help` directory of the source tree, which is embedded in the final
-   binary.
+* `help ['topic'] ['flags']`: opens the corresponding help topics.
+   If no topic is provided opens the default help screen. If multiple topics are
+   provided (separated via ` `) they are opened all as splits.
+   Help topics are stored as `.md` files in the `runtime/help` directory of
+   the source tree, which is embedded in the final binary.
+   The `flags` are optional.
+   * `-hsplit`: Opens the help topic in a horizontal split
+   * `-vsplit`: Opens the help topic in a vertical split
+
+   The default split type is defined by the global `helpsplit` option.
 
 * `save ['filename']`: saves the current buffer. If the file is provided it
    will 'save as' the filename.
@@ -72,12 +78,15 @@ quotes here but these are not necessary when entering the command in micro.
    command's output will be displayed in one line when it finishes running.
 
 * `vsplit ['filename']`: opens a vertical split with `filename`. If no filename
-   is provided, a vertical split is opened with an empty buffer.
+   is provided, a vertical split is opened with an empty buffer. If multiple
+   files are provided (separated via ` `) they are opened all as splits.
 
 * `hsplit ['filename']`: same as `vsplit` but opens a horizontal split instead
    of a vertical split.
 
-* `tab ['filename']`: opens the given file in a new tab.
+* `tab ['filename']`: opens the given file in a new tab. If no filename
+   is provided, a tab is opened with an empty buffer. If multiple files are
+   provided (separated via ` `) they are opened all as tabs.
 
 * `tabmove '[-+]n'`: Moves the active tab to another slot. `n` is an integer.
    If `n` is prefixed with `-` or `+`, then it represents a relative position

runtime/help/keybindings.md

@@ -66,7 +66,9 @@ bindings, tab is bound as
 
 This means that if the `Autocomplete` action is successful, the chain will
 abort. Otherwise, it will try `IndentSelection`, and if that fails too, it
-will execute `InsertTab`.
+will execute `InsertTab`. To use `,`, `|` or `&` in an action (as an argument
+to a command, for example), escape it with `\` or wrap it in single or double
+quotes.
 
 ## Binding commands
 
@@ -168,14 +170,15 @@ CursorLeft
 CursorRight
 CursorStart
 CursorEnd
+CursorToViewTop
+CursorToViewCenter
+CursorToViewBottom
 SelectToStart
 SelectToEnd
 SelectUp
 SelectDown
 SelectLeft
 SelectRight
-SelectToStartOfText
-SelectToStartOfTextToggle
 WordRight
 WordLeft
 SubWordRight
@@ -184,20 +187,22 @@ SelectWordRight
 SelectWordLeft
 SelectSubWordRight
 SelectSubWordLeft
-MoveLinesUp
-MoveLinesDown
 DeleteWordRight
 DeleteWordLeft
 DeleteSubWordRight
 DeleteSubWordLeft
 SelectLine
 SelectToStartOfLine
+SelectToStartOfText
+SelectToStartOfTextToggle
 SelectToEndOfLine
+ParagraphPrevious
+ParagraphNext
+SelectToParagraphPrevious
+SelectToParagraphNext
 InsertNewline
-InsertSpace
 Backspace
 Delete
-Center
 InsertTab
 Save
 SaveAll
@@ -206,21 +211,28 @@ Find
 FindLiteral
 FindNext
 FindPrevious
-DiffPrevious
 DiffNext
+DiffPrevious
+Center
 Undo
 Redo
 Copy
 CopyLine
 Cut
 CutLine
+Duplicate
 DuplicateLine
 DeleteLine
+MoveLinesUp
+MoveLinesDown
 IndentSelection
 OutdentSelection
+Autocomplete
+CycleAutocompleteBack
 OutdentLine
 IndentLine
 Paste
+PastePrimary
 SelectAll
 OpenFile
 Start
@@ -231,33 +243,37 @@ SelectPageUp
 SelectPageDown
 HalfPageUp
 HalfPageDown
-StartOfLine
-EndOfLine
 StartOfText
 StartOfTextToggle
-ParagraphPrevious
-ParagraphNext
-SelectToParagraphPrevious
-SelectToParagraphNext
+StartOfLine
+EndOfLine
 ToggleHelp
+ToggleKeyMenu
 ToggleDiffGutter
 ToggleRuler
-JumpLine
+ToggleHighlightSearch
+UnhighlightSearch
 ResetSearch
-ClearInfo
 ClearStatus
 ShellMode
 CommandMode
+ToggleOverwriteMode
+Escape
 Quit
 QuitAll
+ForceQuit
 AddTab
 PreviousTab
 NextTab
+FirstTab
+LastTab
 NextSplit
+PreviousSplit
+FirstSplit
+LastSplit
 Unsplit
 VSplit
 HSplit
-PreviousSplit
 ToggleMacro
 PlayMacro
 Suspend (Unix only)
@@ -270,14 +286,25 @@ SpawnMultiCursorSelect
 RemoveMultiCursor
 RemoveAllMultiCursors
 SkipMultiCursor
-None
+SkipMultiCursorBack
 JumpToMatchingBrace
-Autocomplete
+JumpLine
+Deselect
+ClearInfo
+None
 ```
 
 The `StartOfTextToggle` and `SelectToStartOfTextToggle` actions toggle between
 jumping to the start of the text (first) and start of the line.
 
+The `CutLine` action cuts the current line and adds it to the previously cut
+lines in the clipboard since the last paste (rather than just replaces the
+clipboard contents with this line). So you can cut multiple, not necessarily
+consecutive lines to the clipboard just by pressing `Ctrl-k` multiple times,
+without selecting them. If you want the more traditional behavior i.e. just
+rewrite the clipboard every time, you can use `CopyLine,DeleteLine` action
+instead of `CutLine`.
+
 You can also bind some mouse actions (these must be bound to mouse buttons)
 
 ```
@@ -495,23 +522,23 @@ conventions for text editing defaults.
     "Alt-]":          "DiffNext|CursorEnd",
     "Ctrl-z":         "Undo",
     "Ctrl-y":         "Redo",
-    "Ctrl-c":         "CopyLine|Copy",
-    "Ctrl-x":         "Cut",
+    "Ctrl-c":         "Copy|CopyLine",
+    "Ctrl-x":         "Cut|CutLine",
     "Ctrl-k":         "CutLine",
-    "Ctrl-d":         "DuplicateLine",
+    "Ctrl-d":         "Duplicate|DuplicateLine",
     "Ctrl-v":         "Paste",
     "Ctrl-a":         "SelectAll",
     "Ctrl-t":         "AddTab",
-    "Alt-,":          "PreviousTab",
-    "Alt-.":          "NextTab",
+    "Alt-,":          "PreviousTab|LastTab",
+    "Alt-.":          "NextTab|FirstTab",
     "Home":           "StartOfText",
     "End":            "EndOfLine",
     "CtrlHome":       "CursorStart",
     "CtrlEnd":        "CursorEnd",
     "PageUp":         "CursorPageUp",
     "PageDown":       "CursorPageDown",
-    "CtrlPageUp":     "PreviousTab",
-    "CtrlPageDown":   "NextTab",
+    "CtrlPageUp":     "PreviousTab|LastTab",
+    "CtrlPageDown":   "NextTab|FirstTab",
     "ShiftPageUp":    "SelectPageUp",
     "ShiftPageDown":  "SelectPageDown",
     "Ctrl-g":         "ToggleHelp",
@@ -522,7 +549,7 @@ conventions for text editing defaults.
     "Ctrl-b":         "ShellMode",
     "Ctrl-q":         "Quit",
     "Ctrl-e":         "CommandMode",
-    "Ctrl-w":         "NextSplit",
+    "Ctrl-w":         "NextSplit|FirstSplit",
     "Ctrl-u":         "ToggleMacro",
     "Ctrl-j":         "PlayMacro",
     "Insert":         "ToggleOverwriteMode",
@@ -621,8 +648,8 @@ are given below:
         "Backtab":        "CycleAutocompleteBack",
         "Ctrl-z":         "Undo",
         "Ctrl-y":         "Redo",
-        "Ctrl-c":         "CopyLine|Copy",
-        "Ctrl-x":         "Cut",
+        "Ctrl-c":         "Copy|CopyLine",
+        "Ctrl-x":         "Cut|CutLine",
         "Ctrl-k":         "CutLine",
         "Ctrl-v":         "Paste",
         "Home":           "StartOfTextToggle",

runtime/help/options.md

@@ -79,22 +79,16 @@ Here are the available options:
 
     default value: `0`
 
-* `colorscheme`: loads the colorscheme stored in
-   $(configDir)/colorschemes/`option`.micro, This setting is `global only`.
+* `colorscheme`: use the given colorscheme. This setting is `global only`.
+   The colorscheme can be either one of the colorschemes that micro comes with
+   by default (such as `default`, `solarized` or `solarized-tc`) which are
+   embedded in the micro binary, or a custom colorscheme stored in
+   `~/.config/micro/colorschemes/$(option).micro` where `$(option)` is the
+   option value. You can read more about micro's colorschemes and see the list
+   of default colorschemes in `> help colors`.
 
     default value: `default`
 
-   Note that the default colorschemes (default, solarized, and solarized-tc)
-   are not located in configDir, because they are embedded in the micro
-   binary.
-
-   The colorscheme can be selected from all the files in the
-   ~/.config/micro/colorschemes/ directory. Micro comes by default with
-   three colorschemes:
-
-   You can read more about micro's colorschemes in the `colors` help topic
-   (`help colors`).
-
 * `cursorline`: highlight the line that the cursor is on in a different color
    (the color is defined by the colorscheme you are using).
 
@@ -172,6 +166,13 @@ Here are the available options:
     default value: `unknown`. This will be automatically overridden depending
     on the file you open.
 
+* `helpsplit`: sets the split type to be used by the `help` command.
+   Possible values:
+    * `vsplit`: open help in a vertical split pane
+    * `hsplit`: open help in a horizontal split pane
+
+    default value: `hsplit`
+
 * `hlsearch`: highlight all instances of the searched text after a successful
    search. This highlighting can be temporarily turned off via the
    `UnhighlightSearch` action (triggered by the Esc key by default) or toggled
@@ -194,11 +195,11 @@ Here are the available options:
 
     default value: `false`
 
-* `incsearch`: enable incremental search in "Find" prompt (matching as you type).
+* `ignorecase`: perform case-insensitive searches.
 
     default value: `true`
 
-* `ignorecase`: perform case-insensitive searches.
+* `incsearch`: enable incremental search in "Find" prompt (matching as you type).
 
     default value: `true`
 
@@ -278,6 +279,23 @@ Here are the available options:
 
     default value: `tab`
 
+* `pageoverlap`: the number of lines from the current view to keep in view
+   when paging up or down. If this is set to 2, for instance, and you page
+   down, the last two lines of the previous page will be the first two lines
+   of the next page.
+
+    default value: `2`
+
+* `parsecursor`: if enabled, this will cause micro to parse filenames such as
+   `file.txt:10:5` as requesting to open `file.txt` with the cursor at line 10
+   and column 5. The column number can also be dropped to open the file at a
+   given line and column 0. Note that with this option enabled it is not possible
+   to open a file such as `file.txt:10:5`, where `:10:5` is part of the filename.
+   It is also possible to open a file with a certain cursor location by using the
+   `+LINE:COL` flag syntax. See `micro -help` for the command line options.
+
+    default value: `false`
+
 * `paste`: treat characters sent from the terminal in a single chunk as a paste
    event rather than a series of manual key presses. If you are pasting using
    the terminal keybinding (not `Ctrl-v`, which is micro's default paste
@@ -287,16 +305,6 @@ Here are the available options:
 
     default value: `false`
 
-* `parsecursor`: if enabled, this will cause micro to parse filenames such as
-   file.txt:10:5 as requesting to open `file.txt` with the cursor at line 10
-   and column 5. The column number can also be dropped to open the file at a
-   given line and column 0. Note that with this option enabled it is not possible
-   to open a file such as `file.txt:10:5`, where `:10:5` is part of the filename.
-   It is also possible to open a file with a certain cursor location by using the
-   `+LINE:COL` flag syntax. See `micro -help` for the command line options.
-
-    default value: `false`
-
 * `permbackup`: this option causes backups (see `backup` option) to be
    permanently saved. With permanent backups, micro will not remove backups when
    files are closed and will never apply them to existing files. Use this option
@@ -321,6 +329,12 @@ Here are the available options:
 
     default value: `false`
 
+* `relativeruler`: make line numbers display relatively. If set to true, all
+   lines except for the line that the cursor is located will display the distance
+   from the cursor's line.
+
+    default value: `false`
+
 * `reload`: controls the reload behavior of the current buffer in case the file
    has changed. The available options are `prompt`, `auto` & `disabled`.
 
@@ -338,12 +352,6 @@ Here are the available options:
 
     default value: `true`
 
-* `relativeruler`: make line numbers display relatively. If set to true, all
-   lines except for the line that the cursor is located will display the distance
-   from the cursor's line.
-
-    default value: `false`
-
 * `savecursor`: remember where the cursor was last time the file was opened and
    put it there when you open the file again. Information is saved to
    `~/.config/micro/buffers/`
@@ -401,11 +409,11 @@ Here are the available options:
 * `statusformatl`: format string definition for the left-justified part of the
    statusline. Special directives should be placed inside `$()`. Special
    directives include: `filename`, `modified`, `line`, `col`, `lines`,
-   `percentage`, `opt`, `bind`.
+   `percentage`, `opt`, `overwrite`, `bind`.
    The `opt` and `bind` directives take either an option or an action afterward
    and fill in the value of the option or the key bound to the action.
 
-    default value: `$(filename) $(modified)($(line),$(col)) $(status.paste)|
+    default value: `$(filename) $(modified)$(overwrite)($(line),$(col)) $(status.paste)|
                     ft:$(opt:filetype) | $(opt:fileformat) | $(opt:encoding)`
 
 * `statusformatr`: format string definition for the right-justified part of the
@@ -427,20 +435,20 @@ Here are the available options:
 
     default value: `true`
 
+* `tabhighlight`: inverts the tab characters' (filename, save indicator, etc)
+   colors with respect to the tab bar.
+
+    default value: `false`
+
 * `tabmovement`: navigate spaces at the beginning of lines as if they are tabs
    (e.g. move over 4 spaces at once). This option only does anything if
    `tabstospaces` is on.
 
     default value: `false`
 
-* `tabhighlight`: inverts the tab characters' (filename, save indicator, etc)
-   colors with respect to the tab bar.
-
-    default value: false
-
 * `tabreverse`: reverses the tab bar colors when active.
 
-    default value: true
+    default value: `true`
 
 * `tabsize`: the size in spaces that a tab character should be displayed with.
 
@@ -454,6 +462,19 @@ Here are the available options:
 
     default value: `false`
 
+* `truecolor`: controls whether micro will use true colors (24-bit colors) when
+   using a colorscheme with true colors, such as `solarized-tc` or `atom-dark`.
+   * `auto`: enable usage of true color if micro detects that it is supported by
+      the terminal, otherwise disable it.
+   * `on`: force usage of true color even if micro does not detect its support
+      by the terminal (of course this is not guaranteed to work well unless the
+      terminal actually supports true color).
+   * `off`: disable true color usage.
+
+   Note: The change will take effect after the next start of `micro`.
+
+   default value: `auto`
+
 * `useprimary` (only useful on unix): defines whether or not micro will use the
    primary clipboard to copy selections in the background. This does not affect
    the normal clipboard using `Ctrl-c` and `Ctrl-v`.
@@ -493,13 +514,13 @@ or disable them:
    recent Git commit rather than the diff since opening the file.
 
 Any option you set in the editor will be saved to the file
-~/.config/micro/settings.json so, in effect, your configuration file will be
+`~/.config/micro/settings.json` so, in effect, your configuration file will be
 created for you. If you'd like to take your configuration with you to another
-machine, simply copy the settings.json to the other machine.
+machine, simply copy the `settings.json` to the other machine.
 
 ## Settings.json file
 
-The settings.json file should go in your configuration directory (by default
+The `settings.json` file should go in your configuration directory (by default
 at `~/.config/micro`), and should contain only options which have been modified
 from their default setting. Here is the full list of options in json format,
 so that you can see what the formatting should look like.
@@ -518,18 +539,24 @@ so that you can see what the formatting should look like.
     "colorscheme": "default",
     "comment": true,
     "cursorline": true,
+    "detectlimit": 100,
     "diff": true,
     "diffgutter": false,
     "divchars": "|-",
     "divreverse": true,
     "encoding": "utf-8",
     "eofnewline": true,
+    "fakecursor": false,
     "fastdirty": false,
     "fileformat": "unix",
     "filetype": "unknown",
-    "incsearch": true,
     "ftoptions": true,
+    "helpsplit": "hsplit",
+    "hlsearch": false,
+    "hltaberrors": false,
+    "hltrailingws": false,
     "ignorecase": true,
+    "incsearch": true,
     "indentchar": " ",
     "infobar": true,
     "initlua": true,
@@ -542,6 +569,8 @@ so that you can see what the formatting should look like.
     "matchbracestyle": "underline",
     "mkparents": false,
     "mouse": true,
+    "multiopen": "tab",
+    "pageoverlap": 2,
     "parsecursor": false,
     "paste": false,
     "permbackup": false,
@@ -551,12 +580,14 @@ so that you can see what the formatting should look like.
     "pluginrepos": [],
     "readonly": false,
     "relativeruler": false,
+    "reload": "prompt",
     "rmtrailingws": false,
     "ruler": true,
     "savecursor": false,
     "savehistory": true,
     "saveundo": false,
     "scrollbar": false,
+    "scrollbarchar": "|",
     "scrollmargin": 3,
     "scrollspeed": 2,
     "smartpaste": true,
@@ -564,17 +595,18 @@ so that you can see what the formatting should look like.
     "splitbottom": true,
     "splitright": true,
     "status": true,
-    "statusformatl": "$(filename) $(modified)($(line),$(col)) $(status.paste)| ft:$(opt:filetype) | $(opt:fileformat) | $(opt:encoding)",
+    "statusformatl": "$(filename) $(modified)$(overwrite)($(line),$(col)) $(status.paste)| ft:$(opt:filetype) | $(opt:fileformat) | $(opt:encoding)",
     "statusformatr": "$(bind:ToggleKeyMenu): bindings, $(bind:ToggleHelp): help",
     "statusline": true,
     "sucmd": "sudo",
     "syntax": true,
-    "tabmovement": false,
     "tabhighlight": true,
+    "tabmovement": false,
     "tabreverse": false,
     "tabsize": 4,
     "tabstospaces": false,
     "useprimary": true,
+    "wordwrap": false,
     "xterm": false
 }
 ```

runtime/help/plugins.md

@@ -57,11 +57,13 @@ that micro defines:
 
 * `deinit()`: cleanup function called when your plugin is unloaded or reloaded.
 
-* `onSetActive(bufpane)`: runs when changing the currently active panel.
-
 * `onBufferOpen(buf)`: runs when a buffer is opened. The input contains
    the buffer object.
 
+* `onBufferOptionChanged(buf, option, old, new)`: runs when an option of the
+   buffer has changed. The input contains the buffer object, the option name,
+   the old and the new value.
+
 * `onBufPaneOpen(bufpane)`: runs when a bufpane is opened. The input
    contains the bufpane object.
 
@@ -350,7 +352,6 @@ The packages and their contents are listed below (in Go type signatures):
     - `IsWordChar(s string) bool`: returns true if the first rune in a
        string is a word character.
     - `String(b []byte) string`: converts a byte array to a string.
-    - `RuneStr(r rune) string`: converts a rune to a string.
     - `Unzip(src, dest string) error`: unzips a file to given folder.
     - `Version`: micro's version number or commit hash
     - `SemVersion`: micro's semantic version

runtime/plugins/comment/comment.lua

@@ -107,7 +107,7 @@ function commentLine(bp, lineN, indentLen)
         bp.Cursor.Y = curpos.Y
     end
     bp.Cursor:Relocate()
-    bp.Cursor.LastVisualX = bp.Cursor:GetVisualX()
+    bp.Cursor:StoreVisualX()
 end
 
 function uncommentLine(bp, lineN, commentRegex)
@@ -135,7 +135,7 @@ function uncommentLine(bp, lineN, commentRegex)
         end
     end
     bp.Cursor:Relocate()
-    bp.Cursor.LastVisualX = bp.Cursor:GetVisualX()
+    bp.Cursor:StoreVisualX()
 end
 
 function toggleCommentLine(bp, lineN, commentRegex)

runtime/plugins/linter/help/linter.md

@@ -9,6 +9,7 @@ following filetypes and linters:
 * **c++**: g++
 * **d**: dmd
 * **go**: go build
+* **go**: go vet
 * **haskell**: hlint
 * **java**: javac
 * **javascript**: jshint
@@ -16,11 +17,16 @@ following filetypes and linters:
 * **literate**: lit
 * **lua**: luacheck
 * **nim**: nim
+* **nix**: nix-linter
 * **objective-c**: clang
-* **python**: pyflakes
+* **python**: flake8
 * **python**: mypy
+* **python**: pyflakes
 * **python**: pylint
+* **python**: ruff
+* **rust**: cargo clippy
 * **shell**: shfmt
+* **shell**: shellcheck
 * **swift**: swiftc (MacOS and Linux only)
 * **yaml**: yamllint
 

runtime/plugins/linter/linter.lua

@@ -66,7 +66,7 @@ function preinit()
     end
 
     makeLinter("gcc", "c", "gcc", {"-fsyntax-only", "-Wall", "-Wextra", "%f"}, "%f:%l:%c:.+: %m")
-    makeLinter("g++", "c++", "gcc", {"-fsyntax-only","-std=c++14", "-Wall", "-Wextra", "%f"}, "%f:%l:%c:.+: %m")
+    makeLinter("g++", "c++", "g++", {"-fsyntax-only","-Wall", "-Wextra", "%f"}, "%f:%l:%c:.+: %m")
     makeLinter("dmd", "d", "dmd", {"-color=off", "-o-", "-w", "-wi", "-c", "%f"}, "%f%(%l%):.+: %m")
     makeLinter("eslint", "javascript", "eslint", {"-f","compact","%f"}, "%f: line %l, col %c, %m")
     makeLinter("gobuild", "go", "go", {"build", "-o", devnull, "%d"}, "%f:%l:%c:? %m")
@@ -82,6 +82,7 @@ function preinit()
     makeLinter("pyflakes", "python", "pyflakes", {"%f"}, "%f:%l:.-:? %m")
     makeLinter("mypy", "python", "mypy", {"%f"}, "%f:%l: %m")
     makeLinter("pylint", "python", "pylint", {"--output-format=parseable", "--reports=no", "%f"}, "%f:%l: %m")
+    makeLinter("ruff", "python", "ruff", {"check", "--output-format=concise", "%f"}, "%f:%l:%c: %m")
     makeLinter("flake8", "python", "flake8", {"%f"}, "%f:%l:%c: %m")
     makeLinter("shfmt", "shell", "shfmt", {"%f"}, "%f:%l:%c: %m")
     makeLinter("shellcheck", "shell", "shellcheck", {"-f", "gcc", "%f"}, "%f:%l:%c:.+: %m")
@@ -107,12 +108,7 @@ function contains(list, element)
     return false
 end
 
-function runLinter(buf)
-    local ft = buf:FileType()
-    local file = buf.Path
-    local dir = "." .. util.RuneStr(os.PathSeparator) .. filepath.Dir(file)
-
-    for k, v in pairs(linters) do
+function checkFtMatch(ft, v)
     local ftmatch = ft == v.filetype
     if v.domatch then
         ftmatch = string.match(ft, v.filetype)
@@ -125,8 +121,16 @@ function runLinter(buf)
     if hasOS and not v.whitelist then
         ftmatch = false
     end
+    return ftmatch
+end
 
-        if ftmatch then
+function runLinter(buf)
+    local ft = buf:FileType()
+    local file = buf.Path
+    local dir = "." .. util.RuneStr(os.PathSeparator) .. filepath.Dir(file)
+
+    for k, v in pairs(linters) do
+        if checkFtMatch(ft, v) then
             local args = {}
             for k, arg in pairs(v.args) do
                 args[k] = arg:gsub("%%f", file):gsub("%%d", dir)
@@ -141,6 +145,19 @@ function onSave(bp)
     return true
 end
 
+function onBufferOptionChanged(buf, option, old, new)
+    if option == "filetype" then
+        if old ~= new then
+            for k, v in pairs(linters) do
+                if checkFtMatch(old, v) then
+                    buf:ClearMessages(k)
+                end
+            end
+        end
+    end
+    return true
+end
+
 function lint(buf, linter, cmd, args, errorformat, loff, coff, callback)
     buf:ClearMessages(linter)
 

runtime/plugins/literate/literate.lua

@@ -47,7 +47,6 @@ function onBufferOpen(buf)
     syntaxFile = syntaxFile .. "            - special:\n"
     syntaxFile = syntaxFile .. "                start: \"@\\\\{\"\n"
     syntaxFile = syntaxFile .. "                end: \"\\\\}\"\n"
-    syntaxFile = syntaxFile .. "                rules: []\n"
     syntaxFile = syntaxFile .. "            - include: " .. codetype .. "\n"
 
     config.AddRuntimeFileFromMemory(config.RTSyntax, "literate.yaml", syntaxFile)

runtime/plugins/status/help/status.md

@@ -8,8 +8,10 @@ those options (`> help options`) for more information.
 
 This plugin provides functions that can be used in the status line format:
 
-* `status.branch`: returns the name of the current git branch.
-* `status.hash`: returns the hash of the current git commit.
+* `status.branch`: returns the name of the current git branch in the repository
+   where the file is located.
+* `status.hash`: returns the hash of the current git commit in the repository
+   where the file is located.
 * `status.paste`: returns "" if the paste option is disabled and "PASTE"
    if it is enabled.
 * `status.lines`: returns the number of lines in the buffer.

runtime/plugins/status/status.lua

@@ -3,7 +3,10 @@ VERSION = "1.0.0"
 local micro = import("micro")
 local buffer = import("micro/buffer")
 local config = import("micro/config")
+local shell = import("micro/shell")
+local filepath = import("filepath")
 local humanize = import("humanize")
+local strings = import("strings")
 
 function init()
     micro.SetStatusInfoFn("status.branch")
@@ -21,7 +24,7 @@ function lines(b)
 end
 
 function vcol(b)
-    return tostring(b:GetActiveCursor():GetVisualX())
+    return tostring(b:GetActiveCursor():GetVisualX(false))
 end
 
 function bytes(b)
@@ -32,30 +35,23 @@ function size(b)
     return humanize.Bytes(b:Size())
 end
 
-function branch(b)
+local function parseRevision(b, opt)
     if b.Type.Kind ~= buffer.BTInfo then
-        local shell = import("micro/shell")
-        local strings = import("strings")
-
-        local branch, err = shell.ExecCommand("git", "rev-parse", "--abbrev-ref", "HEAD")
+        local dir = filepath.Dir(b.Path)
+        local str, err = shell.ExecCommand("git", "-C", dir, "rev-parse", opt, "HEAD")
         if err == nil then
-            return strings.TrimSpace(branch)
+            return strings.TrimSpace(str)
+        end
     end
     return ""
 end
+
+function branch(b)
+    return parseRevision(b, "--abbrev-ref")
 end
 
 function hash(b)
-    if b.Type.Kind ~= 5 then
-        local shell = import("micro/shell")
-        local strings = import("strings")
-
-        local hash, err = shell.ExecCommand("git", "rev-parse", "--short", "HEAD")
-        if err == nil then
-            return strings.TrimSpace(hash)
-        end
-        return ""
-    end
+    return parseRevision(b, "--short")
 end
 
 function paste(b)

runtime/syntax/README.md

@@ -6,11 +6,6 @@ Each yaml file specifies how to detect the filetype based on file extension or h
 In addition, a signature can be provided to help resolving ambiguities when multiple matching filetypes are detected.
 Then there are patterns and regions linked to highlight groups which tell micro how to highlight that filetype.
 
-Making your own syntax files is very simple. I recommend you check the file after you are finished with the
-[`syntax_checker.go`](./syntax_checker.go) program (located in this directory). Just place your yaml syntax
-file in the current directory and run `go run syntax_checker.go` and it will check every file. If there are no
-errors it will print `No issues!`.
-
 You can read more about how to write syntax files (and colorschemes) in the [colors](../help/colors.md) documentation.
 
 # Legacy '.micro' filetype
@@ -38,6 +33,19 @@ Micro syntax files are almost identical to Nano's, except for some key differenc
 * Micro does not use `icolor`. Instead, for a case insensitive match, use the case insensitive flag (`i`) in the regular expression
     * For example, `icolor green ".*"` would become `color green "(?i).*"`
 
+# Incompatibilities with older versions of micro
+
+With PR [#3458](https://github.com/zyedidia/micro/pull/3458) resp. commit
+[a9b513a](https://github.com/zyedidia/micro/commit/a9b513a28adaaa7782505dc1e284e1a0132cb66f)
+empty `rules: []` definitions are removed from all syntax files, since
+`rules` are no longer mandatory.
+Unfortunately they are mandatory for `micro` versions up to and including `v2.0.14`.
+
+To use newer syntax definitions from this repository with older `micro` versions
+you have to add these `rules: []` to all regions not including `rules` already.
+Otherwise you need to use syntax definitions before the above mentioned PR
+for example from version [v2.0.14](https://github.com/zyedidia/micro/tree/v2.0.14).
+
 # Using with colorschemes
 
 Not all of these files have been converted to use micro's colorscheme feature. Most of them just hardcode the colors, which can be problematic depending on the colorscheme you use.

runtime/syntax/asm.yaml

@@ -4,7 +4,7 @@ detect:
     filename: "\\.(S|s|asm)$"
 
 rules:
-    # This file is made for NASM assembly
+    # This file is made mainly for NASM assembly
 
     ## Instructions
     # x86
@@ -108,3 +108,16 @@ rules:
         rules:
             - todo: "(TODO|XXX|FIXME):?"
 
+    ## C-like comments (supported by some assemblers)
+
+    - comment:
+        start: "//"
+        end: "$"
+        rules:
+            - todo: "(TODO|XXX|FIXME):?"
+
+    - comment:
+        start: "/\\*"
+        end: "\\*/"
+        rules:
+            - todo: "(TODO|XXX|FIXME):?"

runtime/syntax/caddyfile.yaml

@@ -19,5 +19,4 @@ rules:
     - comment:
         start: "#"
         end: "$"
-        rules: []
 

runtime/syntax/cmake.yaml

@@ -30,7 +30,6 @@ rules:
     - preproc:
         start: "\\$(\\{|ENV\\{)"
         end: "\\}"
-        rules: []
 
     - identifier.macro: "\\b(APPLE|UNIX|WIN32|CYGWIN|BORLAND|MINGW|MSVC(_IDE|60|71|80|90)?)\\b"
 

runtime/syntax/crystal.yaml

@@ -27,12 +27,10 @@ rules:
     - constant.string:
         start: "`"
         end: "`"
-        rules: []
 
     - constant.string:
         start: "%x\\{"
         end: "\\}"
-        rules: []
 
     - constant.string:
         start: "\""
@@ -68,5 +66,4 @@ rules:
     - constant:
         start: "<<-?'?EOT'?"
         end: "^EOT"
-        rules: []
 

runtime/syntax/d.yaml

@@ -109,13 +109,10 @@ rules:
     - comment:
         start: "//"
         end: "$"
-        rules: []
     - comment:
         start: "/\\*"
         end: "\\*/"
-        rules: []
     - comment:
         start: "/\\+"
         end: "\\+/"
-        rules: []
 

runtime/syntax/erb.yaml

@@ -19,7 +19,6 @@ rules:
     - default:
         start: "<%"
         end: "%>"
-        rules: []
 
     - preproc: "<%|%>"
     - red: "&[^;[[:space:]]]*;"
@@ -37,6 +36,5 @@ rules:
     - identifier.macro:
         start: "<<-?'?EOT'?"
         end: "^EOT"
-        rules: []
 
     - todo: "(XXX|TODO|FIXME|\\?\\?\\?)"

runtime/syntax/erlang.yaml

@@ -22,7 +22,6 @@ rules:
         start: "'"
         end: "'"
         skip: "\\\\."
-        rules: []
 #            - constant.specialChar: "%."
 #            - constant.specialChar: "\\\\[abfnrtv'\\\"\\\\]"
 #            - constant.specialChar: "\\\\([0-7]{3}|x[A-Fa-f0-9]{2}|u[A-Fa-f0-9]{4}|U[A-Fa-f0-9]{8})"
@@ -42,4 +41,3 @@ rules:
     - comment:
         start: "%"
         end: "$"
-        rules: []

runtime/syntax/fish.yaml

@@ -38,7 +38,6 @@ rules:
         start: "'"
         end: "'"
         skip: "\\\\."
-        rules: []
 
     - comment:
         start: "#"

runtime/syntax/forth.yaml

@@ -19,7 +19,6 @@ rules:
     - constant.string:
         start: "\\b([Ss.]\" )"
         end: "\""
-        rules: []
 
     - comment:
         start: "\\("

runtime/syntax/fsharp.yaml

@@ -45,4 +45,3 @@ rules:
     - comment:
         start: "\\(\\*"
         end: "\\*\\)"
-        rules: []

runtime/syntax/gemini.yaml

@@ -10,7 +10,6 @@ rules:
     - special:
         start: "^```"
         end: "^```"
-        rules: []
       # heading lines
     - special:  "^#{1,3}.*"
       # unordered list items

runtime/syntax/gentoo-etc-portage.yaml

@@ -20,4 +20,3 @@ rules:
     - comment:
         start: "#"
         end: "$"
-        rules: []

runtime/syntax/git-commit.yaml

@@ -22,7 +22,6 @@ rules:
     - comment.line:
         start: "^#"
         end: "$"
-        rules: []
 
     # Diffs (i.e. git commit --verbose)
     - default:

runtime/syntax/git-config.yaml

@@ -11,4 +11,3 @@ rules:
     - comment:
         start: "#"
         end: "$"
-        rules: []

runtime/syntax/git-rebase-todo.yaml

@@ -16,4 +16,3 @@ rules:
     - comment.line:
         start: "^#"
         end: "$"
-        rules: []

runtime/syntax/go.yaml

@@ -47,7 +47,6 @@ rules:
     - constant.string:
         start: "`"
         end: "`"
-        rules: []
 
     - comment:
         start: "//"

runtime/syntax/graphql.yaml

@@ -44,4 +44,3 @@ rules:
     - comment:
         start: "#"
         end: "$"
-        rules: []

runtime/syntax/groff.yaml

@@ -11,7 +11,6 @@ rules:
     - constant:
         start: "(\\\\|\\\\\\\\)n\\["
         end: "]"
-        rules: []
 
     - type: "^\\.[[:space:]]*[^[[:space:]]]*"
     - comment: "^\\.\\\\\".*$"
@@ -19,12 +18,10 @@ rules:
     - constant.string:
         start: "(\\\\|\\\\\\\\)\\*\\["
         end: "]"
-        rules: []
 
     - constant.specialChar: "\\\\\\(.."
     - constant.specialChar:
         start: "\\\\\\["
         end: "]"
-        rules: []
 
     - identifier.macro: "\\\\\\\\\\$[1-9]"

runtime/syntax/groovy.yaml

@@ -75,7 +75,6 @@ rules:
             - identifier:
                 start: "[$][{]"
                 end: "[}]"
-                rules: []
 
     # Triple-single-quoted strings
     - constant.string:
@@ -90,7 +89,6 @@ rules:
     - constant.string:
         start: "[$]/"
         end: "/[$]"
-        rules: []
 
     # Single-line comments
     - comment:
@@ -110,4 +108,3 @@ rules:
     - comment:
         start: "/[*][*]@?"
         end: "[*]/"
-        rules: []

runtime/syntax/haskell.yaml

@@ -4,25 +4,28 @@ detect:
     filename: "\\.hs$"
 
 rules:
+    - symbol.operator: "[!#$%&:*+/<=>?@.\\\\^\\|~\\p{Sm}\\-]+"
+
+    # Identifiers (with or without a module name)
+    - type: "\\b([A-Z][A-Za-z0-9_]*\\.)*[A-Z]+[A-Za-z0-9_']*\\b"
+    - default: "\\b([A-Z][A-Za-z0-9_]*\\.)*[a-z][A-Za-z0-9_']*\\b"
+
+    - statement: ";"
+    - symbol.bracket: "[\\(\\)\\[\\]\\{\\}]"
+    - special: "`[A-Za-z0-9']+`"
+
     # Keywords
-    - statement: "\\b(as|case|of|class|data|default|deriving|do|forall|foreign|hiding|if|then|else|import|infix|infixl|infixr|instance|let|in|mdo|module|newtype|qualified|type|where)\\b"
-
-      # Various symbols
-    - symbol: "(\\||@|!|:|_|~|=|\\\\|;|\\(\\)|,|\\[|\\]|\\{|\\})"
-
-      # Operators
-    - symbol.operator: "(==|/=|&&|\\|\\||<|>|<=|>=)"
-
-      # Various symbols
-    - special: "(->|<-)"
-    - symbol: "\\.|\\$"
+    - statement: "\\b(case|of|class|data|default|deriving|do|forall|foreign|hiding|if|then|else|import|infix|infixl|infixr|instance|let|in|mdo|module|newtype|qualified|type|where)\\b"
 
     # Data constructors
     - constant.bool: "\\b(True|False)\\b"
     - constant: "\\b(Nothing|Just|Left|Right|LT|EQ|GT)\\b"
 
+    - constant: "\\(\\)"  # Unit
+    - constant.number: "\\b(0[xX][0-9A-Fa-f]+|0[oO][0-7]+|0[bB][01]+|[-]?[0-9]+([.][0-9]+)?([eE][+-]?[0-9]+)?)\\b"
+
     # Data classes
-    - identifier.class: "\\b(Read|Show|Enum|Eq|Ord|Data|Bounded|Typeable|Num|Real|Fractional|Integral|RealFrac|Floating|RealFloat|Monad|MonadPlus|Functor|Foldable|Additive|Zip)[ ]"
+    - identifier.class: "\\b(Additive|Applicative|Bounded|Data|Enum|Eq|Floating|Foldable|Fractional|Functor|Integral|Monad|MonadPlus|Monoid|Num|Ord|Read|Real|RealFloat|RealFrac|Semigroup|Show|Traversable|Typeable|Zip)[ ]"
 
     # Strings
     - constant.string:
@@ -30,7 +33,8 @@ rules:
         end: "\""
         skip: "\\\\."
         rules:
-            - constant.specialChar: "\\\\."
+            - special: "\\\\&"
+            - constant.specialChar: "\\\\([abfnrtv\"'\\\\]|[0-9]+|x[0-9a-fA-F]+|o[0-7]+|NUL|SOH|STX|ETX|EOT|ENQ|ACK|BEL|BS|HT|LF|VT|FF|CR|SO|SI|DLE|DC[1-4]|NAK|SYN|ETB|CAN|EM|SUB|ESC|FS|GS|RS|US|SP|DEL)"
 
     # Comments
     - comment:
@@ -45,4 +49,4 @@ rules:
         rules:
             - todo: "(TODO|XXX|FIXME):?"
 
-    - identifier.micro: "undefined"
+    - identifier.macro: "undefined"

runtime/syntax/html4.yaml

@@ -17,7 +17,6 @@ rules:
     - default:
         start: ">"
         end: "<"
-        rules: []
 
     - symbol.tag: "<|>"
     - constant.string.url: "(ftp(s)?|http(s)?|git|chrome)://[^ 	]+"