BufView returns not only the buffer's width and height but also its
x,y position. It may be useful e.g. for checking if a mouse click was
on the actual buffer or ourside it, e.g. on the gutter.
Don't highlight space characters at the right edge which are used just
for padding after line break in word wrapping, i.e. don't correspond to
any real characters in the buffer.
This makes it look nicer e.g. when selecting word-wrapped text.
Modified behavior of CursorUp, CursorDown, CursorPageUp etc:
if softwrap is enabled, cursor moves by visual lines, not logical lines.
TODO: implement it also for Home and End keys: move cursor to the
visual start or end of a line. I haven't implemented it for now, because
I'm not sure what should be the behavior of StartOfTextToggle then
(considering that Home key is bound to StartOfTextToggle by default).
Fixes#1598
Fix displaying tabs and wide runes which don't fit in the window.
Don't overwrite the vertical divider and the adjacent window.
- For tabs: display only as many of the tab's spaces as fit in the window.
- For wide runes: if a rune doesn't fit, don't display it in this line at all.
If softwrap is on, display this rune in the next line.
Fixes#1979
Fixes issue with the usage of a slightly incorrect buffer height value
(v.Height should be v.Height-1 if statusline is displayed).
Also, to avoid too many duplications, the code reorganized a little:
buffer display params (width, height, gutter offset and others) are
calculated in a single place.
Softwrap implementation enhanced to fix various issues with scrolling,
centering, relocating etc.
The main idea is simple: work not with simple line numbers but
with (Line, Row) pairs, where Line is a line number in the buffer
and Row is a visual line (a row) number within this line.
The logic remains mostly the same, but simple arithmetic operations
on line numbers are replaced with corresponding operations on
(Line, Row) pairs.
Fixes#632, #1657
* Added hybrid line numbers
* Changed rulerhybrid to relativeruler, modified documentation accordingly.
* Reverted go.mod and go.sum
I don't know how they got changed but they are good now.
Co-authored-by: Colin Hughes <semilin@pop-os.localdomain>
