dhruvasagar · March 1, 2017 07:39 · Mar 1, 2017 · Mar 1, 2017
diff --git a/pairify.vim b/pairify.vim
@@ -55,7 +55,7 @@ function! s:find_pair(string)
   endfor
 
   if empty(stack)
-    return ''
+    return "\t"
   else
     return remove(stack, 0)
   endif

diff --git a/pairify.vim b/pairify.vim
@@ -0,0 +1,69 @@
+if exists('g:loaded_pairify')
+  finish
+endif
+let g:loaded_pairify = 1
+
+let g:pairs = {
+      \ "left": {
+      \   "[": "]",
+      \   "(": ")",
+      \   "{": "}",
+      \   "<": ">",
+      \   "'": "'",
+      \   '"': '"'
+      \ },
+      \ "right": {
+      \   "]": "[",
+      \   ")": "(",
+      \   "}": "{",
+      \   ">": "<",
+      \   "'": "'",
+      \   '"': '"'
+      \ }
+      \}
+
+function! s:is_compliment(char1, char2)
+  if has_key(g:pairs.left, a:char1)
+    return a:char2 == g:pairs.left[a:char1]
+  elseif has_key(g:pairs.right, a:char1)
+    return a:char2 == g:pairs.right[a:char1]
+  endif
+endfunction
+
+function! s:is_quote(char)
+  return a:char ==# "'" || a:char ==# '"'
+endfunction
+
+function! s:find_pair(string)
+  let stack = []
+  let characters = split(a:string, '\zs')
+
+  for char in reverse(characters)
+    if has_key(g:pairs.right, char)
+      if !empty(stack) && s:is_quote(char) && stack[-1] ==# char
+        call remove(stack, -1)
+        continue
+      endif
+      call add(stack, char)
+    elseif has_key(g:pairs.left, char)
+      if !empty(stack) && s:is_compliment(char, stack[-1])
+        call remove(stack, -1)
+      elseif empty(stack)
+        return g:pairs.left[char]
+      endif
+    endif
+  endfor
+
+  if empty(stack)
+    return ''
+  else
+    return remove(stack, 0)
+  endif
+endfunction
+
+function! s:pairify()
+  return s:find_pair(getline('.')[0:col('.')-1])
+endfunction
+
+inoremap <expr> <silent> <Plug>(pairify-complete) <SID>pairify()
+imap <Tab> <Plug>(pairify-complete)