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Re: Scan of regexps in Emacs (March 17)
From: |
Mattias Engdegård |
Subject: |
Re: Scan of regexps in Emacs (March 17) |
Date: |
Wed, 20 Mar 2019 11:04:50 +0100 |
20 mars 2019 kl. 02.53 skrev Paul Eggert <address@hidden>:
>
> Thanks for proofreading that. I installed the attached to try to fix the
> problems you noted.
That looks fine. You found more skip-chars-* rubbish to clean up, good! Turn
any stone...
> I also fixed a couple of other problems if I happened to run across them.
> First, the regexp [a-b-c] is ambiguous according to POSIX, and should be
> avoided. Second, a regexp like [[:alnum:]-z] is also ambiguous for the same
> reason. Perhaps these regexps currently have a particular behavior in Emacs
> but it's not documented as far as I know and code should avoid them. Perhaps
> the trawler could be modified to catch them.
Right, the rules are muddy; they had to be reverse-engineered for xr. I was a
bit disappointed not to find any [a-[:alnum:]] anywhere though; that would have
been a sight.
I'll see what can be done -- it's always a matter of balance to avoid false
positives.
By the way, my little diatribe about format arguments led to a mechanised
search for argument count violations. One found, in eshell, pushed to master as
obvious:
diff --git a/lisp/eshell/esh-proc.el b/lisp/eshell/esh-proc.el
index 55251f5bfb..3432582cf4 100644
--- a/lisp/eshell/esh-proc.el
+++ b/lisp/eshell/esh-proc.el
@@ -498,7 +498,7 @@ See the variable `eshell-kill-processes-on-exit'."
(buffer-name))))
(eshell-round-robin-kill
(if (eq eshell-kill-processes-on-exit 'every)
- (format-message "Kill Eshell child process `%s'? "))))
+ "Kill Eshell child process `%s'? ")))
(let ((buf (get-buffer "*Process List*")))
(if (and buf (buffer-live-p buf))
(kill-buffer buf)))
- Re: Scan of regexps in Emacs (March 17), (continued)
- Re: Scan of regexps in Emacs (March 17), Stefan Monnier, 2019/03/20
- Re: Scan of regexps in Emacs (March 17), Mattias Engdegård, 2019/03/21
- Re: Scan of regexps in Emacs (March 17), Richard Stallman, 2019/03/20
- Re: Scan of regexps in Emacs (March 17), Stephen Leake, 2019/03/22
- Re: Scan of regexps in Emacs (March 17), Mattias Engdegård, 2019/03/22
- Re: Scan of regexps in Emacs (March 17), Stefan Monnier, 2019/03/22
- Re: Scan of regexps in Emacs (March 17),
Mattias Engdegård <=