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ae7ab90159
runtime: Set b:undo_indent where missing (vim/vim#12944)
0382f05dbd
Co-authored-by: dkearns <dougkearns@gmail.com>
86 lines
2.7 KiB
VimL
86 lines
2.7 KiB
VimL
" Vim indent file
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" Language: fish
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" Maintainer: Nicholas Boyle (github.com/nickeb96)
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" Repository: https://github.com/nickeb96/fish.vim
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" Last Change: February 4, 2023
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" 2023 Aug 28 by Vim Project (undo_indent)
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if exists("b:did_indent")
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finish
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endif
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let b:did_indent = 1
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setlocal indentexpr=GetFishIndent(v:lnum)
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setlocal indentkeys+==end,=else,=case
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let b:undo_indent = "setlocal indentexpr< indentkeys<"
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function s:PrevCmdStart(linenum)
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let l:linenum = a:linenum
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" look for the first line that isn't a line continuation
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while l:linenum > 1 && getline(l:linenum - 1) =~# '\\$'
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let l:linenum = l:linenum - 1
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endwhile
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return l:linenum
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endfunction
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function GetFishIndent(lnum)
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let l:shiftwidth = shiftwidth()
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let l:prevlnum = prevnonblank(a:lnum - 1)
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if l:prevlnum ==# 0
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return 0
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endif
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" if the previous line ended with a line continuation
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if getline(a:lnum - 1) =~# '\\$'
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if a:lnum ==# 0 || getline(a:lnum - 2) !~# '\\$'
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" this is the first line continuation in a chain, so indent it
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return indent(a:lnum - 1) + l:shiftwidth
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else
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" use the same indentation as the previous continued line
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return indent(a:lnum - 1)
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endif
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endif
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let l:prevlnum = s:PrevCmdStart(l:prevlnum)
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let l:prevline = getline(l:prevlnum)
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if l:prevline =~# '^\s*\(begin\|if\|else\|while\|for\|function\|case\|switch\)\>'
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let l:indent = l:shiftwidth
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else
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let l:indent = 0
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endif
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let l:line = getline(a:lnum)
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if l:line =~# '^\s*end\>'
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" find end's matching start
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let l:depth = 1
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let l:currentlnum = a:lnum
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while l:depth > 0 && l:currentlnum > 0
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let l:currentlnum = s:PrevCmdStart(prevnonblank(l:currentlnum - 1))
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let l:currentline = getline(l:currentlnum)
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if l:currentline =~# '^\s*end\>'
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let l:depth = l:depth + 1
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elseif l:currentline =~# '^\s*\(begin\|if\|while\|for\|function\|switch\)\>'
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let l:depth = l:depth - 1
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endif
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endwhile
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if l:currentline =~# '^\s*switch\>'
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return indent(l:currentlnum)
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else
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return indent(l:prevlnum) + l:indent - l:shiftwidth
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endif
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elseif l:line =~# '^\s*else\>'
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return indent(l:prevlnum) + l:indent - l:shiftwidth
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elseif l:line =~# '^\s*case\>'
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if getline(l:prevlnum) =~# '^\s*switch\>'
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return indent(l:prevlnum) + l:indent
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else
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return indent(l:prevlnum) + l:indent - l:shiftwidth
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endif
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else
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return indent(l:prevlnum) + l:indent
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endif
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endfunction
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