ExtractWikiLinks

Added a separate function to extract wiki links
It must be sourced on-demand, since it's not tested

.vim/ExtractWikiLinks.vim

@@ -0,0 +1,30 @@
+function! ExtractWikiLinks()
+  let links = []
+  let pattern = '\v\[\[([^\]]+)\]\]'
+  let linenr = 1
+  while linenr <= line('$')
+    let line = getline(linenr)
+    let match = match(line, pattern)
+    while match != -1
+      let link_start = match + 2 " Start after '[['
+      let link_end = matchend(line, pattern) - 2 " End before ']]'
+      if link_end > link_start
+        let link = strpart(line, link_start, link_end - link_start)
+        call add(links, link)
+      endif
+      let match = match(line, pattern, matchend(line, pattern)) " Find next match
+    endwhile
+    let linenr = linenr + 1
+  endwhile
+
+  " Open a new buffer with the extracted links
+  new
+  " Make the buffer modifiable temporarily
+  set modifiable
+  call setline(1, links)
+  " Set the buffer options after writing
+  set nomodifiable buftype=nofile bufhidden=wipe nobuflisted noswapfile
+  echo "Extracted " . len(links) . " wiki links."
+endfunction
+
+command! ExtractLinks call ExtractWikiLinks()