X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/9a3b3126eeb98a1bf5a327912b2ff0bf591ccec2..8853cbca8d956767e357540de792259f3922d15b:/ftplugin/mkd.vim

diff --git a/ftplugin/mkd.vim b/ftplugin/mkd.vim
index 057947b..9d84c77 100644
--- a/ftplugin/mkd.vim
+++ b/ftplugin/mkd.vim
@@ -318,11 +318,10 @@ function! s:Markdown_Toc(...)
     else
         lopen
     endif
-    set modifiable
-    %s/\v^([^|]*\|){2,2} #//
+    setlocal modifiable
     for i in range(1, line('$'))
-        " this is the quickfix data for the current item
-        let d = getqflist()[i-1]
+        " this is the location-list data for the current item
+        let d = getloclist(0)[i-1]
         " atx headers
         if match(d.text, "^#") > -1
             let l:level = len(matchstr(d.text, '#*', 'g'))-1
@@ -339,8 +338,8 @@ function! s:Markdown_Toc(...)
         endif
         call setline(i, repeat('  ', l:level). d.text)
     endfor
-    set nomodified
-    set nomodifiable
+    setlocal nomodified
+    setlocal nomodifiable
     normal! gg
 endfunction
 
@@ -412,29 +411,123 @@ function! s:TableFormat()
   call setpos('.', l:pos)
 endfunction
 
-call <sid>MapNormVis('<Plug>(Markdown_MoveToNextHeader)', '<sid>Markdown_MoveToNextHeader')
-call <sid>MapNormVis('<Plug>(Markdown_MoveToPreviousHeader)', '<sid>Markdown_MoveToPreviousHeader')
-call <sid>MapNormVis('<Plug>(Markdown_MoveToNextSiblingHeader)', '<sid>Markdown_MoveToNextSiblingHeader')
-call <sid>MapNormVis('<Plug>(Markdown_MoveToPreviousSiblingHeader)', '<sid>Markdown_MoveToPreviousSiblingHeader')
-" Menmonic: Up
-call <sid>MapNormVis('<Plug>(Markdown_MoveToParentHeader)', '<sid>Markdown_MoveToParentHeader')
-" Menmonic: Current
-call <sid>MapNormVis('<Plug>(Markdown_MoveToCurHeader)', '<sid>Markdown_MoveToCurHeader')
+" Parameters:
+"
+" - step +1 for right, -1 for left
+"
+" TODO: multiple lines.
+"
+function! s:FindCornerOfSyntax(lnum, col, step)
+    let l:col = a:col
+    let l:syn = synIDattr(synID(a:lnum, l:col, 1), 'name')
+    while synIDattr(synID(a:lnum, l:col, 1), 'name') ==# l:syn
+        let l:col += a:step
+    endwhile
+    return l:col - a:step
+endfunction
+
+" Return the next position of the given syntax name,
+" inclusive on the given position.
+"
+" TODO: multiple lines
+"
+function! s:FindNextSyntax(lnum, col, name)
+    let l:col = a:col
+    let l:step = 1
+    while synIDattr(synID(a:lnum, l:col, 1), 'name') !=# a:name
+        let l:col += l:step
+    endwhile
+    return [a:lnum, l:col]
+endfunction
+
+function! s:FindCornersOfSyntax(lnum, col)
+    return [<sid>FindLeftOfSyntax(a:lnum, a:col), <sid>FindRightOfSyntax(a:lnum, a:col)]
+endfunction
+
+function! s:FindRightOfSyntax(lnum, col)
+    return <sid>FindCornerOfSyntax(a:lnum, a:col, 1)
+endfunction
+
+function! s:FindLeftOfSyntax(lnum, col)
+    return <sid>FindCornerOfSyntax(a:lnum, a:col, -1)
+endfunction
+
+" Returns:
+"
+" - a string with the the URL for the link under the cursor
+" - an empty string if the cursor is not on a link
+"
+" `b:` instead of `s:` to make it testable.
+"
+" TODO
+"
+" - multiline support
+" - give an error if the separator does is not on a link
+"
+function! b:Markdown_GetUrlForPosition(lnum, col)
+    let l:lnum = a:lnum
+    let l:col = a:col
+    let l:syn = synIDattr(synID(l:lnum, l:col, 1), 'name')
+
+    if l:syn ==# 'mkdInlineURL' || l:syn ==# 'mkdURL' || l:syn ==# 'mkdLinkDefTarget'
+        " Do nothing.
+    elseif l:syn ==# 'mkdLink'
+        let [l:lnum, l:col] = <sid>FindNextSyntax(l:lnum, l:col, 'mkdURL')
+        let l:syn = 'mkdURL'
+    elseif l:syn ==# 'mkdDelimiter'
+        let l:line = getline(l:lnum)
+        let l:char = l:line[col - 1]
+        if l:char ==# '<'
+            let l:col += 1
+        elseif l:char ==# '>' || l:char ==# ')'
+            let l:col -= 1
+        elseif l:char ==# '[' || l:char ==# ']' || l:char ==# '('
+            let [l:lnum, l:col] = <sid>FindNextSyntax(l:lnum, l:col, 'mkdURL')
+        else
+            return ''
+        endif
+    else
+        return ''
+    endif
+
+    let [l:left, l:right] = <sid>FindCornersOfSyntax(l:lnum, l:col)
+    return getline(l:lnum)[l:left - 1 : l:right - 1]
+endfunction
+
+" Front end for GetUrlForPosition.
+"
+function! s:OpenUrlUnderCursor()
+    let l:url = b:Markdown_GetUrlForPosition(line('.'), col('.'))
+    if l:url != ''
+        call netrw#NetrwBrowseX(l:url, 0)
+    else
+        echomsg 'The cursor is not on a link.'
+    endif
+endfunction
+
+call <sid>MapNormVis('<Plug>Markdown_MoveToNextHeader', '<sid>Markdown_MoveToNextHeader')
+call <sid>MapNormVis('<Plug>Markdown_MoveToPreviousHeader', '<sid>Markdown_MoveToPreviousHeader')
+call <sid>MapNormVis('<Plug>Markdown_MoveToNextSiblingHeader', '<sid>Markdown_MoveToNextSiblingHeader')
+call <sid>MapNormVis('<Plug>Markdown_MoveToPreviousSiblingHeader', '<sid>Markdown_MoveToPreviousSiblingHeader')
+call <sid>MapNormVis('<Plug>Markdown_MoveToParentHeader', '<sid>Markdown_MoveToParentHeader')
+call <sid>MapNormVis('<Plug>Markdown_MoveToCurHeader', '<sid>Markdown_MoveToCurHeader')
+nnoremap <Plug>(OpenUrlUnderCursor) :call <sid>OpenUrlUnderCursor()<cr>
 
 if !get(g:, 'vim_markdown_no_default_key_mappings', 0)
-    nmap <buffer> ]] <Plug>(Markdown_MoveToNextHeader)
-    nmap <buffer> [[ <Plug>(Markdown_MoveToPreviousHeader)
-    nmap <buffer> ][ <Plug>(Markdown_MoveToNextSiblingHeader)
-    nmap <buffer> [] <Plug>(Markdown_MoveToPreviousSiblingHeader)
-    nmap <buffer> ]u <Plug>(Markdown_MoveToParentHeader)
-    nmap <buffer> ]c <Plug>(Markdown_MoveToCurHeader)
-
-    vmap <buffer> ]] <Plug>(Markdown_MoveToNextHeader)
-    vmap <buffer> [[ <Plug>(Markdown_MoveToPreviousHeader)
-    vmap <buffer> ][ <Plug>(Markdown_MoveToNextSiblingHeader)
-    vmap <buffer> [] <Plug>(Markdown_MoveToPreviousSiblingHeader)
-    vmap <buffer> ]u <Plug>(Markdown_MoveToParentHeader)
-    vmap <buffer> ]c <Plug>(Markdown_MoveToCurHeader)
+    nmap <buffer> ]] <Plug>Markdown_MoveToNextHeader
+    nmap <buffer> [[ <Plug>Markdown_MoveToPreviousHeader
+    nmap <buffer> ][ <Plug>Markdown_MoveToNextSiblingHeader
+    nmap <buffer> [] <Plug>Markdown_MoveToPreviousSiblingHeader
+    nmap <buffer> ]u <Plug>Markdown_MoveToParentHeader
+    nmap <buffer> ]c <Plug>Markdown_MoveToCurHeader
+    nmap <buffer> gx <Plug>OpenUrlUnderCursor
+
+    vmap <buffer> ]] <Plug>Markdown_MoveToNextHeader
+    vmap <buffer> [[ <Plug>Markdown_MoveToPreviousHeader
+    vmap <buffer> ][ <Plug>Markdown_MoveToNextSiblingHeader
+    vmap <buffer> [] <Plug>Markdown_MoveToPreviousSiblingHeader
+    vmap <buffer> ]u <Plug>Markdown_MoveToParentHeader
+    vmap <buffer> ]c <Plug>Markdown_MoveToCurHeader
 endif
 
 command! -buffer -range=% HeaderDecrease call s:HeaderDecrease(<line1>, <line2>)