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Add option to disable code blocks concealing
[etc/vim.git] / indent / markdown.vim
1 if exists("b:did_indent") | finish | endif
2 let b:did_indent = 1
3
4 setlocal indentexpr=GetMarkdownIndent()
5 setlocal nolisp
6 setlocal autoindent
7
8 " Automatically continue blockquote on line break
9 setlocal formatoptions+=r
10 setlocal comments=b:>
11 if get(g:, "vim_markdown_auto_insert_bullets", 1)
12     " Do not automatically insert bullets when auto-wrapping with text-width
13     setlocal formatoptions-=c
14     " Accept various markers as bullets
15     setlocal comments+=b:*,b:+,b:-
16 endif
17
18 " Only define the function once
19 if exists("*GetMarkdownIndent") | finish | endif
20
21 function! s:IsMkdCode(lnum)
22     let name = synIDattr(synID(a:lnum, 1, 0), 'name')
23     return (name =~ '^mkd\%(Code$\|Snippet\)' || name != '' && name !~ '^\%(mkd\|html\)')
24 endfunction
25
26 function! s:IsLiStart(line)
27     return a:line !~ '^ *\([*-]\)\%( *\1\)\{2}\%( \|\1\)*$' &&
28       \    a:line =~ '^\s*[*+-] \+'
29 endfunction
30
31 function! s:IsHeaderLine(line)
32     return a:line =~ '^\s*#'
33 endfunction
34
35 function! s:IsBlankLine(line)
36     return a:line =~ '^$'
37 endfunction
38
39 function! s:PrevNonBlank(lnum)
40     let i = a:lnum
41     while i > 1 && s:IsBlankLine(getline(i))
42         let i -= 1
43     endwhile
44     return i
45 endfunction
46
47 function GetMarkdownIndent()
48     if v:lnum > 2 && s:IsBlankLine(getline(v:lnum - 1)) && s:IsBlankLine(getline(v:lnum - 2))
49         return 0
50     endif
51     let list_ind = get(g:, "vim_markdown_new_list_item_indent", 4)
52     " Find a non-blank line above the current line.
53     let lnum = s:PrevNonBlank(v:lnum - 1)
54     " At the start of the file use zero indent.
55     if lnum == 0 | return 0 | endif
56     let ind = indent(lnum)
57     let line = getline(lnum)    " Last line
58     let cline = getline(v:lnum) " Current line
59     if s:IsLiStart(cline)
60         " Current line is the first line of a list item, do not change indent
61         return indent(v:lnum)
62     elseif s:IsHeaderLine(cline) && !s:IsMkdCode(v:lnum)
63         " Current line is the header, do not indent
64         return 0
65     elseif s:IsLiStart(line)
66         if s:IsMkdCode(lnum)
67             return ind
68         else
69             " Last line is the first line of a list item, increase indent
70             return ind + list_ind
71         end
72     else
73         return ind
74     endif
75 endfunction