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:     EDIF (Electronic Design Interchange Format)
" Maintainer:   Artem Zankovich <z_artem@hotbox.ru>
" Last Change:  Oct 14, 2002
"
" Supported standarts are:
"   ANSI/EIA Standard 548-1988 (EDIF Version 2 0 0)
"   IEC 61690-1 (EDIF Version 3 0 0)
"   IEC 61690-2 (EDIF Version 4 0 0)

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

setlocal iskeyword=48-57,-,+,A-Z,a-z,_,&

syn region	edifList	matchgroup=Delimiter start="(" end=")" contains=edifList,edifKeyword,edifString,edifNumber

" Strings
syn match       edifInStringError    /%/ contained
syn match       edifInString    /%\s*\d\+\s*%/ contained
syn region      edifString      start=/"/ end=/"/ contains=edifInString,edifInStringError contained

" Numbers
syn match       edifNumber      "\<[-+]\=[0-9]\+\>"

" Keywords
syn match       edifKeyword     "(\@<=\s*[a-zA-Z&][a-zA-Z_0-9]*\>" contained

syn match       edifError       ")"

" synchronization
syntax sync fromstart

" Define the default highlighting.

hi def link edifInString		SpecialChar
hi def link edifKeyword		Keyword
hi def link edifNumber		Number
hi def link edifInStringError	edifError
hi def link edifError		Error
hi def link edifString		String

let b:current_syntax = "edif"