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Speed up 'msft' and 'watcom' compilation error regexps

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They have similar structure, and both suffer from being able to
match leading spaces in multiple ways which leads to bad performance
when backtracking (bug#39595).

* lisp/progmodes/compile.el (compilation-error-regexp-alist-alist):
Improved 'msft' and 'watcom' regexps.
This commit is contained in:
Mattias Engdegård
2020-02-14 23:38:24 +01:00
parent 96a269d045
commit 39410cfc5a
1 changed files with 2 additions and 2 deletions
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4
lisp/progmodes/compile.el
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@@ -221,7 +221,7 @@ of[ \t]+\"?\\([a-zA-Z]?:?[^\":\n]+\\)\"?:" 3 2 nil (1))
;; considered before EDG.
;; The message may be a "warning", "error", or "fatal error" with
;; an error code, or "see declaration of" without an error code.
"^ *\\([0-9]+>\\)?\\(\\(?:[a-zA-Z]:\\)?[^:(\t\n]+\\)(\\([0-9]+\\)) ?\
"^ *\\([0-9]+>\\)?\\(\\(?:[a-zA-Z]:\\)?[^ :(\t\n][^:(\t\n]*\\)(\\([0-9]+\\)) ?\
: \\(?:see declaration\\|\\(?:warnin\\(g\\)\\|[a-z ]+\\) C[0-9]+:\\)"
2 3 nil (4))
@@ -455,7 +455,7 @@ File = \\(.+\\), Line = \\([0-9]+\\)\\(?:, Column = \\([0-9]+\\)\\)?"
"^\\([^, \n\t]+\\), line \\([0-9]+\\), char \\([0-9]+\\)[:., (-]" 1 2 3)
(watcom
"^[ \t]*\\(\\(?:[a-zA-Z]:\\)?[^:(\t\n]+\\)(\\([0-9]+\\)): ?\
"^[ \t]*\\(\\(?:[a-zA-Z]:\\)?[^ :(\t\n][^:(\t\n]*\\)(\\([0-9]+\\)): ?\
\\(?:\\(Error! E[0-9]+\\)\\|\\(Warning! W[0-9]+\\)\\):"
1 2 nil (4))