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Avoid E403 error on :syn-include

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Example .vimrc:

        let g:markdown_fenced_languages = ['vim', 'viml=vim']
        syntax on

causes

        "/tmp/test.mkd" 6L, 98C
        Error detected while processing /usr/share/vim/vim74/syntax/vim.vim:
        line  777:
        E403: syntax sync: line continuations pattern specified twice
        E403: syntax sync: line continuations pattern specified twice

Example "test.mkd" file:

        ```vim
        echo 'hi'
        ```
This commit is contained in:
tyru
2016-01-23 02:04:16 +09:00
parent de42c8a325
commit 63074a52ad
1 changed files with 12 additions and 0 deletions
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12
syntax/markdown.vim
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@@ -18,14 +18,20 @@ unlet! b:current_syntax
if !exists('g:markdown_fenced_languages')
let g:markdown_fenced_languages = []
endif
let s:done_include = {}
for s:type in map(copy(g:markdown_fenced_languages),'matchstr(v:val,"[^=]*$")')
if has_key(s:done_include, matchstr(s:type,'[^.]*'))
continue
endif
if s:type =~ '\.'
let b:{matchstr(s:type,'[^.]*')}_subtype = matchstr(s:type,'\.\zs.*')
endif
exe 'syn include @markdownHighlight'.substitute(s:type,'\.','','g').' syntax/'.matchstr(s:type,'[^.]*').'.vim'
unlet! b:current_syntax
let s:done_include[matchstr(s:type,'[^.]*')] = 1
endfor
unlet! s:type
unlet! s:done_include
syn sync minlines=10
syn case ignore
@@ -91,10 +97,16 @@ syn match markdownFootnote "\[^[^\]]\+\]"
syn match markdownFootnoteDefinition "^\[^[^\]]\+\]:"
if main_syntax ==# 'markdown'
let s:done_include = {}
for s:type in g:markdown_fenced_languages
if has_key(s:done_include, matchstr(s:type,'[^.]*'))
continue
endif
exe 'syn region markdownHighlight'.substitute(matchstr(s:type,'[^=]*$'),'\..*','','').' matchgroup=markdownCodeDelimiter start="^\s*```*\s*'.matchstr(s:type,'[^=]*').'\>.*$" end="^\s*```*\ze\s*$" keepend contains=@markdownHighlight'.substitute(matchstr(s:type,'[^=]*$'),'\.','','g')
let s:done_include[matchstr(s:type,'[^.]*')] = 1
endfor
unlet! s:type
unlet! s:done_include
endif
syn match markdownEscape "\\[][\\`*_{}()<>#+.!-]"