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56 lines
1.5 KiB
56 lines
1.5 KiB
if exists("b:did_indent") | finish | endif
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let b:did_indent = 1
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setlocal indentexpr=GetMarkdownIndent()
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setlocal nolisp
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setlocal autoindent
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" Automatically insert bullets
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setlocal formatoptions+=r
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" Do not automatically insert bullets when auto-wrapping with text-width
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setlocal formatoptions-=c
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" Accept various markers as bullets
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setlocal comments=b:*,b:+,b:-
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" Automatically continue blockquote on line break
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setlocal comments+=b:>
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" Only define the function once
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if exists("*GetMarkdownIndent") | finish | endif
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function! s:is_li_start(line)
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return a:line !~ '^ *\([*-]\)\%( *\1\)\{2}\%( \|\1\)*$' &&
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\ a:line =~ '^\s*[*+-] \+'
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endfunction
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function! s:is_blank_line(line)
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return a:line =~ '^$'
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endfunction
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function! s:prevnonblank(lnum)
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let i = a:lnum
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while i > 1 && s:is_blank_line(getline(i))
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let i -= 1
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endwhile
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return i
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endfunction
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function GetMarkdownIndent()
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let list_ind = 4
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" Find a non-blank line above the current line.
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let lnum = prevnonblank(v:lnum - 1)
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" At the start of the file use zero indent.
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if lnum == 0 | return 0 | endif
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let ind = indent(lnum)
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let line = getline(lnum) " Last line
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let cline = getline(v:lnum) " Current line
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if s:is_li_start(cline)
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" Current line is the first line of a list item, do not change indent
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return indent(v:lnum)
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elseif s:is_li_start(line)
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" Last line is the first line of a list item, increase indent
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return ind + list_ind
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else
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return ind
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endif
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endfunction
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