patch 9.1.0116: win_split_ins may not check available room Commit: https://github.com/vim/vim/commit/0fd44a5ad81ade342cb54d8984965bdedd2272c8 Author: Sean Dewar <6256228+seandewar@users.noreply.github.com> Date: Tue Feb 20 20:28:15 2024 +0100 patch 9.1.0116: win_split_ins may not check available room Problem: win_split_ins has no check for E36 when moving an existing window Solution: check for room and fix the issues in f_win_splitmove() (Sean Dewar) win_split_ins has no check for E36 when moving an existing window, allowing for layouts with many overlapping zero-sized windows to be created (which may also cause drawing issues with tablines and such). f_win_splitmove also has some bugs. So check for room and fix the issues in f_win_splitmove. Handle failure in the two relevant win_split_ins callers by restoring the original layout, and factor the common logic into win_splitmove. Don't check for room when opening an autocommand window, as it's a temporary window that's rarely interacted with or drawn anyhow, and is rather important for some autocommands. Issues fixed in f_win_splitmove: - Error if splitting is disallowed. - Fix heap-use-after-frees if autocommands fired from switching to "targetwin" close "wp" or "oldwin". - Fix splitting the wrong window if autocommands fired from switching to "targetwin" switch to a different window. - Ensure -1 is returned for all errors. Also handle allocation failure a bit earlier in make_snapshot (callers, except win_splitmove, don't really care if a snapshot can't be made, so just ignore the return value). Note: Test_smoothscroll_in_zero_width_window failed after these changes with E36, as it was using the previous behaviour to create a zero-width window. I've fixed the test such that it fails with UBSAN as expected when v9.0.1367 is reverted (and simplified it too). related: #14042 Signed-off-by: Sean Dewar <6256228+seandewar@users.noreply.github.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

" Script to generate a file that shows al 256 xterm colors

new
let lnum = 1

" | in original color pair to see white background.
let trail_bar = "\033[m|"

" ANSI colors
call setline(lnum, 'ANSI background')
let lnum += 1

let s = ''
for nr in range(0, 7)
  let s .= "\033[4" . nr . "m    "
endfor
for nr in range(8, 15)
  let s .= "\033[10" . (nr - 8) . "m    "
endfor
let s .= trail_bar

call setline(lnum, s)
let lnum += 1

" ANSI text colors
call setline(lnum, 'ANSI text')
let lnum += 1

let s = ''
for nr in range(0, 7)
  let s .= "\033[0;3" . nr . "mxxxx"
endfor
for nr in range(8, 15)
  let s .= "\033[0;9" . (nr - 8) . "mxxxx"
endfor
let s .= trail_bar

call setline(lnum, s)
let lnum += 1

" ANSI with bold text
call setline(lnum, 'ANSI bold text')
let lnum += 1

let s = ''
for nr in range(0, 7)
  let s .= "\033[1;3" . nr . "mxxxx"
endfor
for nr in range(8, 15)
  let s .= "\033[1;9" . (nr - 8) . "mxxxx"
endfor
let s .= trail_bar

call setline(lnum, s)
let lnum += 1

" 6 x 6 x 6 color cube
call setline(lnum, 'color cube')
let lnum += 1

for high in range(0, 5)
  let s = ''
  for low in range(0, 35)
    let nr = low + high * 36
    let s .= "\033[48;5;" . (nr + 16) . "m  "
  endfor
  let s .= trail_bar
  call setline(lnum + high, s)
endfor
let lnum += 6

" 24 shades of grey
call setline(lnum, 'grey ramp')
let lnum += 1

let s = ''
for nr in range(0, 23)
    let s .= "\033[48;5;" . (nr + 232) . "m   "
endfor
let s .= trail_bar
call setline(lnum, s)

set binary
write! <sfile>:h/color_ramp.txt
quit