Broken #ifdef/#endif match

[j5shi]

Describe the bug

#ifdef __cplusplus
extern "C" {
#endif

the #endif is considered not to match with #ifdef in above C/CPP code.

To Reproduce

• add the following config to your .vimrc

  let g:rainbow_conf = {
  \   'separately': {
  \       'vim': {
  \           'parentheses': ['start=/(/ end=/)/', 'start=/\[/ end=/\]/', 'start=/{/ end=/}/ fold', 'start=/if/ step=/elseif\|else/ end=/|\?endif/ fold', 'start=/(/ end=/)/ containedin=vimFuncBody', 'start=/\[/ end=/\]/ containedin=vimFuncBody', 'start=/{/ end=/}/ fold containedin=vimFuncBody', 'start=/if/ step=/elseif\|else/ end=/|\?endif/ fold containedin=vimFuncBody'],
  \       },
  \       'cpp': {
  \           'parentheses': ['start=/(/ end=/)/', 
  \                           'start=/\[/ end=/\]/', 
  \                           'start=/{/ end=/}/ fold', 
  \                           'start=/#ifdef\|#ifndef\|#ifeq\|#if/ step=/#elif\|#else/ end=/#endif/'],
  \       },
  \       'c': {
  \           'parentheses': ['start=/(/ end=/)/', 
  \                           'start=/\[/ end=/\]/', 
  \                           'start=/{/ end=/}/ fold', 
  \                           'start=/#ifdef\|#ifndef\|#ifeq\|#if/ step=/#elif\|#else/ end=/#endif/'],
  \       }
  \   }
  \}

• create a C or CPP file
• add the code snippet in bug description section

Expected behavior

the #endif is should match with #ifdef in above C/CPP code and have the same color.

Screenshots

Additional context

No.

[luochen1990]

The { after extern "C" is considered as a parenthesis. It seems complicate to avoid this problem.

[j5shi]

But I think we can just left any open parenthese/bracket/brace/... alone if the close part is not found (same for the close part), this is quite simple and reasonable, what do you think? Afterall, this can happen.

[luochen1990]

Actually, nobody can tell whether there is a right parenthesis following.

[j5shi]

Actually it's not about whether there's a closed parenthesis following or not, it's about nested parenthesis/brackets/braces.

[luochen1990]

You can replace #ifdef and #endif into ( and ), it's almost the same thing.