Add dash and underscore completion for the YouCompleteMe Vim plugin.

YouCompleteMe_dash_support.patch

diff --git a/ycmd/identifier_utils.py b/ycmd/identifier_utils.py
index 4217fdef..ac91c97b 100644
--- a/ycmd/identifier_utils.py
+++ b/ycmd/identifier_utils.py
@@ -102,6 +102,7 @@ FILETYPE_TO_IDENTIFIER_REGEX = {
 }
 
 FILETYPE_TO_IDENTIFIER_REGEX[ 'scss' ] = FILETYPE_TO_IDENTIFIER_REGEX[ 'css' ]
+FILETYPE_TO_IDENTIFIER_REGEX[ 'javascript' ] = FILETYPE_TO_IDENTIFIER_REGEX[ 'css' ]
 FILETYPE_TO_IDENTIFIER_REGEX[ 'sass' ] = FILETYPE_TO_IDENTIFIER_REGEX[ 'css' ]
 FILETYPE_TO_IDENTIFIER_REGEX[ 'less' ] = FILETYPE_TO_IDENTIFIER_REGEX[ 'css' ]
 FILETYPE_TO_IDENTIFIER_REGEX[ 'elisp' ] = (

You might want to use the following instead to only match $ at the beginning:

const char *IDENTIFIER_REGEX = "\\$?[_a-zA-Z][\\w_-]*";

(also in my fork, together with handling identifiers from strings and comments)

Updated for ycmd.

Does this still work? I can't find any reference to:

def IsIdentifierChar( char ): return char.isalnum() or char == '_'

to change in my local source code .