leading spaces and disallow whitespace chars within the file name.
;; foo.c(2:0) : informational EDC0804: Function foo is not referenced.
;; foo.c(3:8) : warning EDC0833: Implicit return statement encountered.
;; foo.c(5:5) : error EDC0350: Syntax error.
- ("\n *\\([^(]+\\)(\\([0-9]+\\):\\([0-9]+\\)) : " 1 2 3)
+ ("\n\\([^( \n\t]+\\)(\\([0-9]+\\):\\([0-9]+\\)) : " 1 2 3)
)
"Alist that specifies how to match errors in compiler output.
Each elt has the form (REGEXP FILE-IDX LINE-IDX [COLUMN-IDX FILE-FORMAT...])