init: BadWhitespace only for non-readonly

[vimconf.git] / init.vim

diff --git a/init.vim b/init.vim
index d4a51e098d649737b046a296ab7d6dc9239b0d2f..17ed253a14c19622a4dd56b85cb84e69c5ef4eb5 100644 (file)
--- a/init.vim
+++ b/init.vim
@@ -40,17 +40,32 @@ end
 syntax on
 
 
-" Trailing whitespace
-highlight default link TrailingWhitespace SpellCap
-" Make trailing whitespace be flagged as bad.
-au BufRead,BufNewFile * syn match TrailingWhitespace /\s\+$/ containedin=ALL
-
-
 """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 " Some global plugin settings
 
 runtime plugsetup.vim
 
+" Attention: Must be run after plugsetup.vim
+" Trailing whitespace
+highlight default link BadWhitespace SpellCap
+
+" Setup BadWhitespace syntax match expressions.
+function SetBadWhitespaceSyntax()
+  " Do not expose bad whitespace in help buffers or for man pages. Or, more
+  " generally, if we open the file readonly.
+  "if &ft != "help" && &ft != "man"
+  if !&readonly
+    " Make trailing whitespace be flagged as bad.
+    syn match BadWhitespace /\s\+$/ containedin=ALL
+    " Make space before tab be flagged as bad and vice versa
+    syn match BadWhitespace / \+\t/ containedin=ALL
+    syn match BadWhitespace /\t \+/ containedin=ALL
+  endif
+endfunction
+
+" Make trailing whitespace be flagged as bad.
+au BufRead,BufNewFile * call SetBadWhitespaceSyntax()
+
 let g:airline_powerline_fonts=1
 let g:airline#extensions#tabline#enabled=1
 let g:airline#extensions#branch#enabled=1