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Fix fenced code block syntax when reopening a file
[etc/vim.git] / ftplugin / markdown.vim
diff --git a/ftplugin/markdown.vim b/ftplugin/markdown.vim
index ae81c804c0d8030748917454ecdd8764be90166f..c7fba7fae6bdf275344714e9426a7ca5c3dd471d 100644 (file)
--- a/ftplugin/markdown.vim
+++ b/ftplugin/markdown.vim
@@ -303,53 +303,75 @@ function! s:Toc(...)
     endif
 
 
     endif
 
 
-    let b:bufnr = bufnr('%')
-    let b:fenced_block = 0
-    let b:header_list = []
+    let l:bufnr = bufnr('%')
+    let l:cursor_line = line('.')
+    let l:cursor_header = 0
+    let l:fenced_block = 0
+    let l:front_matter = 0
+    let l:header_list = []
     let l:header_max_len = 0
     let l:header_max_len = 0
-    let g:vim_markdown_toc_autofit = get(g:, "vim_markdown_toc_autofit", 0)
+    let l:vim_markdown_toc_autofit = get(g:, "vim_markdown_toc_autofit", 0)
+    let l:vim_markdown_frontmatter = get(g:, "vim_markdown_frontmatter", 0)
     for i in range(1, line('$'))
         let l:lineraw = getline(i)
         let l:l1 = getline(i+1)
         let l:line = substitute(l:lineraw, "#", "\\\#", "g")
         if l:line =~ '````*' || l:line =~ '\~\~\~\~*'
     for i in range(1, line('$'))
         let l:lineraw = getline(i)
         let l:l1 = getline(i+1)
         let l:line = substitute(l:lineraw, "#", "\\\#", "g")
         if l:line =~ '````*' || l:line =~ '\~\~\~\~*'
-            if b:fenced_block == 0
-                let b:fenced_block = 1
-            elseif b:fenced_block == 1
-                let b:fenced_block = 0
+            if l:fenced_block == 0
+                let l:fenced_block = 1
+            elseif l:fenced_block == 1
+                let l:fenced_block = 0
+            endif
+        elseif l:vim_markdown_frontmatter == 1
+            if l:front_matter == 1
+                if l:line == '---'
+                    let l:front_matter = 0
+                endif
+            elseif i == 1
+                if l:line == '---'
+                    let l:front_matter = 1
+                endif
             endif
         endif
         if l:line =~ '^#\+' || (l:l1 =~ '^=\+\s*$' || l:l1 =~ '^-\+\s*$') && l:line =~ '^\S'
             endif
         endif
         if l:line =~ '^#\+' || (l:l1 =~ '^=\+\s*$' || l:l1 =~ '^-\+\s*$') && l:line =~ '^\S'
-            let b:is_header = 1
+            let l:is_header = 1
         else
         else
-            let b:is_header = 0
+            let l:is_header = 0
         endif
         endif
-        if b:is_header == 1 && b:fenced_block == 0
+        if l:is_header == 1 && l:fenced_block == 0 && l:front_matter == 0
             " append line to location list
             " append line to location list
-            let b:item = {'lnum': i, 'text': l:line, 'valid': 1, 'bufnr': b:bufnr, 'col': 1}
-            let b:header_list = b:header_list + [b:item]
+            let l:item = {'lnum': i, 'text': l:line, 'valid': 1, 'bufnr': l:bufnr, 'col': 1}
+            let l:header_list = l:header_list + [l:item]
+            " set header number of the cursor position
+            if l:cursor_header == 0
+                if i == l:cursor_line
+                    let l:cursor_header = len(l:header_list)
+                elseif i > l:cursor_line
+                    let l:cursor_header = len(l:header_list) - 1
+                endif
+            endif
             " keep track of the longest header size (heading level + title)
             " keep track of the longest header size (heading level + title)
-            let b:total_len = stridx(l:line, ' ') + len(l:line)
-            if b:total_len > l:header_max_len
-                let l:header_max_len = b:total_len
+            let l:total_len = stridx(l:line, ' ') + len(l:line)
+            if l:total_len > l:header_max_len
+                let l:header_max_len = l:total_len
             endif
         endif
     endfor
             endif
         endif
     endfor
-    if len(b:header_list) == 0
+    if len(l:header_list) == 0
         echom "Toc: No headers."
         return
     endif
         echom "Toc: No headers."
         return
     endif
-    call setloclist(0, b:header_list)
+    call setloclist(0, l:header_list)
 
     if l:window_type ==# 'horizontal'
         lopen
     elseif l:window_type ==# 'vertical'
         vertical lopen
         " auto-fit toc window when possible to shrink it
 
     if l:window_type ==# 'horizontal'
         lopen
     elseif l:window_type ==# 'vertical'
         vertical lopen
         " auto-fit toc window when possible to shrink it
-        if (&columns/2) > l:header_max_len && g:vim_markdown_toc_autofit == 1
-            let &winwidth = (l:header_max_len + 1)
+        if (&columns/2) > l:header_max_len && l:vim_markdown_toc_autofit == 1
+            execute 'vertical resize ' . (l:header_max_len + 1)
         else
         else
-            let &winwidth = (&columns/2)
+            execute 'vertical resize ' . (&columns/2)
         endif
     elseif l:window_type ==# 'tab'
         tab lopen
         endif
     elseif l:window_type ==# 'tab'
         tab lopen
@@ -378,7 +400,7 @@ function! s:Toc(...)
     endfor
     setlocal nomodified
     setlocal nomodifiable
     endfor
     setlocal nomodified
     setlocal nomodifiable
-    normal! gg
+    execute 'normal! ' . l:cursor_header . 'G'
 endfunction
 
 " Convert Setex headers in range `line1 .. line2` to Atx.
 endfunction
 
 " Convert Setex headers in range `line1 .. line2` to Atx.
@@ -592,12 +614,23 @@ command! -buffer Tocv call s:Toc('vertical')
 command! -buffer Toct call s:Toc('tab')
 
 " Heavily based on vim-notes - http://peterodding.com/code/vim/notes/
 command! -buffer Toct call s:Toc('tab')
 
 " Heavily based on vim-notes - http://peterodding.com/code/vim/notes/
-let s:filetype_dict = {
-    \ 'c++': 'cpp',
-    \ 'viml': 'vim'
-\ }
+if exists('g:vim_markdown_fenced_languages')
+    let s:filetype_dict = {}
+    for s:filetype in g:vim_markdown_fenced_languages
+        let key = matchstr(s:filetype, "[^=]*")
+        let val = matchstr(s:filetype, "[^=]*$")
+        let s:filetype_dict[key] = val
+    endfor
+else
+    let s:filetype_dict = {
+        \ 'c++': 'cpp',
+        \ 'viml': 'vim',
+        \ 'bash': 'sh',
+        \ 'ini': 'dosini'
+    \ }
+endif
 
 
-function! s:Markdown_highlight_sources(force)
+function! s:MarkdownHighlightSources(force)
     " Syntax highlight source code embedded in notes.
     " Look for code blocks in the current file
     let filetypes = {}
     " Syntax highlight source code embedded in notes.
     " Look for code blocks in the current file
     let filetypes = {}
@@ -608,6 +641,10 @@ function! s:Markdown_highlight_sources(force)
     if !exists('b:mkd_known_filetypes')
         let b:mkd_known_filetypes = {}
     endif
     if !exists('b:mkd_known_filetypes')
         let b:mkd_known_filetypes = {}
     endif
+    if !exists('b:mkd_included_filetypes')
+        " set syntax file name included
+        let b:mkd_included_filetypes = {}
+    endif
     if !a:force && (b:mkd_known_filetypes == filetypes || empty(filetypes))
         return
     endif
     if !a:force && (b:mkd_known_filetypes == filetypes || empty(filetypes))
         return
     endif
@@ -623,9 +660,14 @@ function! s:Markdown_highlight_sources(force)
                 let filetype = ft
             endif
             let group = 'mkdSnippet' . toupper(substitute(filetype, "[+-]", "_", "g"))
                 let filetype = ft
             endif
             let group = 'mkdSnippet' . toupper(substitute(filetype, "[+-]", "_", "g"))
-            let include = s:syntax_include(filetype)
+            if !has_key(b:mkd_included_filetypes, filetype)
+                let include = s:SyntaxInclude(filetype)
+                let b:mkd_included_filetypes[filetype] = 1
+            else
+                let include = '@' . toupper(filetype)
+            endif
             let command = 'syntax region %s matchgroup=%s start="^\s*```%s$" matchgroup=%s end="\s*```$" keepend contains=%s%s'
             let command = 'syntax region %s matchgroup=%s start="^\s*```%s$" matchgroup=%s end="\s*```$" keepend contains=%s%s'
-            execute printf(command, group, startgroup, ft, endgroup, include, has('conceal') ? ' concealends' : '')
+            execute printf(command, group, startgroup, ft, endgroup, include, has('conceal') && get(g:, 'vim_markdown_conceal', 1) ? ' concealends' : '')
             execute printf('syntax cluster mkdNonListItem add=%s', group)
 
             let b:mkd_known_filetypes[ft] = 1
             execute printf('syntax cluster mkdNonListItem add=%s', group)
 
             let b:mkd_known_filetypes[ft] = 1
@@ -633,7 +675,7 @@ function! s:Markdown_highlight_sources(force)
     endfor
 endfunction
 
     endfor
 endfunction
 
-function! s:syntax_include(filetype)
+function! s:SyntaxInclude(filetype)
     " Include the syntax highlighting of another {filetype}.
     let grouplistname = '@' . toupper(a:filetype)
     " Unset the name of the current syntax while including the other syntax
     " Include the syntax highlighting of another {filetype}.
     let grouplistname = '@' . toupper(a:filetype)
     " Unset the name of the current syntax while including the other syntax
@@ -658,16 +700,23 @@ function! s:syntax_include(filetype)
 endfunction
 
 
 endfunction
 
 
-function! s:Markdown_refresh_syntax(force)
+function! s:MarkdownRefreshSyntax(force)
     if &filetype == 'markdown' && line('$') > 1
     if &filetype == 'markdown' && line('$') > 1
-        call s:Markdown_highlight_sources(a:force)
+        call s:MarkdownHighlightSources(a:force)
+    endif
+endfunction
+
+function! s:MarkdownClearSyntaxVariables()
+    if &filetype == 'markdown'
+        unlet! b:mkd_included_filetypes
     endif
 endfunction
 
 augroup Mkd
     autocmd!
     endif
 endfunction
 
 augroup Mkd
     autocmd!
-    au BufWinEnter * call s:Markdown_refresh_syntax(1)
-    au BufWritePost * call s:Markdown_refresh_syntax(0)
-    au InsertEnter,InsertLeave * call s:Markdown_refresh_syntax(0)
-    au CursorHold,CursorHoldI * call s:Markdown_refresh_syntax(0)
+    au BufWinEnter * call s:MarkdownRefreshSyntax(1)
+    au BufUnload * call s:MarkdownClearSyntaxVariables()
+    au BufWritePost * call s:MarkdownRefreshSyntax(0)
+    au InsertEnter,InsertLeave * call s:MarkdownRefreshSyntax(0)
+    au CursorHold,CursorHoldI * call s:MarkdownRefreshSyntax(0)
 augroup END
 augroup END
vim configuration

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