patch 9.1.0456: Left shift is incorrect with vartabstop and shiftwidth=0 Commit: https://github.com/vim/vim/commit/88d4f255b7b7a19bb4f6489e0ad0956e47d51fed Author: Gary Johnson <garyjohn@spocom.com> Date: Sat Jun 1 20:51:33 2024 +0200 patch 9.1.0456: Left shift is incorrect with vartabstop and shiftwidth=0 Problem: Left shift is incorrect with vartabstop and shiftwidth=0 Solution: make tabstop_at() function aware of shift direction (Gary Johnson) The problem was that with 'vartabstop' set and 'shiftwidth' equal 0, left shifts using << were shifting the line to the wrong column. The tabstop to the right of the first character in the line was being used as the shift amount instead of the tabstop to the left of that first character. The reason was that the tabstop_at() function always returned the value of the tabstop to the right of the given column and was not accounting for the direction of the shift. The solution was to make tabstop_at() aware of the direction of the shift and to choose the tabtop accordingly. A test was added to check this behavior and make sure it doesn't regress. While at it, also fix a few indentation/alignment issues. fixes: #14864 closes: #14887 Signed-off-by: Gary Johnson <garyjohn@spocom.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

" Vim syntax file
" Language:	Vim .viminfo file
" Maintainer:	The Vim Project <https://github.com/vim/vim>
" Last Change:	2023 Aug 10
" Former Maintainer:	Bram Moolenaar <Bram@vim.org>

" Quit when a (custom) syntax file was already loaded
if exists("b:current_syntax")
  finish
endif

let s:cpo_save = &cpo
set cpo&vim

" The lines that are NOT recognized
syn match viminfoError "^[^\t].*"

" The one-character one-liners that are recognized
syn match viminfoStatement "^[/&$@:?=%!<]"

" The two-character one-liners that are recognized
syn match viminfoStatement "^[-'>"]."
syn match viminfoStatement +^"".+
syn match viminfoStatement "^\~[/&]"
syn match viminfoStatement "^\~[hH]"
syn match viminfoStatement "^\~[mM][sS][lL][eE]\d\+\~\=[/&]"

syn match viminfoOption "^\*.*=" contains=viminfoOptionName
syn match viminfoOptionName "\*\a*"ms=s+1 contained

" Comments
syn match viminfoComment "^#.*"

" New style lines.  TODO: highlight numbers and strings.
syn match viminfoNew "^|.*"

" Define the default highlighting.
" Only used when an item doesn't have highlighting yet
hi def link viminfoComment	Comment
hi def link viminfoError	Error
hi def link viminfoStatement	Statement
hi def link viminfoNew		String

let b:current_syntax = "viminfo"

let &cpo = s:cpo_save
unlet s:cpo_save

" vim: ts=8 sw=2