New command :VimwikiCheckLinks

while we are at it, refactor the code to search through files

syntax/omnipresent_syntax.vim

@@ -0,0 +1,30 @@
+" vim:tabstop=2:shiftwidth=2:expandtab:foldmethod=marker:textwidth=79
+" Vimwiki syntax file
+" Syntax definitions which are always available
+" Author: Daniel Schemala <istjanichtzufassen@gmail.com>
+" Home: http://code.google.com/p/vimwiki/
+
+
+" Define Regexes of anchors for every syntax.
+" This has to be separated from vimwiki_default.vim, vimwiki_markdown.vim, etc.
+" because the latter are only loaded and available if the current wiki has the
+" corresponding syntax
+let g:vimwiki_default_header_search = '^\s*\(=\{1,6}\)\([^=].*[^=]\)\1\s*$'
+let g:vimwiki_default_header_match = '^\s*\(=\{1,6}\)=\@!\s*__Header__\s*\1=\@!\s*$'
+let g:vimwiki_default_bold_search = '\%(^\|\s\|[[:punct:]]\)\@<=\*\zs\%([^*`[:space:]][^*`]*[^*`[:space:]]\|[^*`[:space:]]\)\ze\*\%([[:punct:]]\|\s\|$\)\@='
+let g:vimwiki_default_bold_match = '\%(^\|\s\|[[:punct:]]\)\@<=\*__Text__\*\%([[:punct:]]\|\s\|$\)\@='
+let g:vimwiki_default_wikilink = '\[\[\zs[^\\\]|]\+\ze\%(|[^\\\]]\+\)\?\]\]'
+
+let g:vimwiki_markdown_header_search = '^\s*\(#\{1,6}\)\([^#].*\)$'
+let g:vimwiki_markdown_header_match = '^\s*\(#\{1,6}\)#\@!\s*__Header__\s*$'
+let g:vimwiki_markdown_bold_search = '\%(^\|\s\|[[:punct:]]\)\@<=\*\zs\%([^*`[:space:]][^*`]*[^*`[:space:]]\|[^*`[:space:]]\)\ze\*\%([[:punct:]]\|\s\|$\)\@='
+let g:vimwiki_markdown_bold_match = '\%(^\|\s\|[[:punct:]]\)\@<=\*__Text__\*\%([[:punct:]]\|\s\|$\)\@='
+let g:vimwiki_markdown_wikilink = g:vimwiki_default_wikilink "XXX hier fehlen noch welche
+
+let g:vimwiki_media_header_search = '^\s*\(=\{1,6}\)\([^=].*[^=]\)\1\s*$'
+let g:vimwiki_media_header_match = '^\s*\(=\{1,6}\)=\@!\s*__Header__\s*\1=\@!\s*$'
+let g:vimwiki_media_bold_search = "'''\\zs[^']\\+\\ze'''"
+let g:vimwiki_media_bold_match = '''''''__Text__'''''''
+" ^- this strange looking thing is equivalent to "'''__Text__'''" but since we later
+" want to call escape() on this string, we must keep it in single quotes
+let g:vimwiki_media_wikilink = g:vimwiki_default_wikilink

syntax/vimwiki.vim

@@ -13,8 +13,9 @@ endif
 "TODO do nothing if ...? (?)
 let g:starttime = reltime()  " start the clock
 if VimwikiGet('maxhi')
-  let b:existing_wikifiles = vimwiki#base#get_links('*'.VimwikiGet('ext'))
-  let b:existing_wikidirs  = vimwiki#base#get_links('*/')
+  let b:existing_wikifiles = vimwiki#base#get_wikilinks(g:vimwiki_current_idx)
+  let b:existing_wikidirs  =
+        \ vimwiki#base#get_wiki_directories(g:vimwiki_current_idx)
 endif
 let s:timescans = vimwiki#u#time(g:starttime)  "XXX
   "let b:xxx = 1