Re: [Emacs-diffs] /srv/bzr/emacs/trunk r111958: * lisp/progmodes/ruby-mode.el (ruby-syntax-propertize-function): Only

[Dmitry Gutov <dgutov@yandex.ru>]

On 09.03.2013 5:41, Stefan Monnier wrote:
>>               ;; The regular expression itself.
>>               "\\(/\\)[^/\n\\\\]*\\(?:\\\\.[^/\n\\\\]*\\)*\\(/\\)")
>> -           (2 (string-to-syntax "\"/"))
>> -           (3 (string-to-syntax "\"/")))
>> +           (3 (unless (nth 3 (syntax-ppss (match-beginning 2)))
>> +                (put-text-property (match-beginning 2) (match-end 2)
>> +                                   'syntax-table (string-to-syntax "\"/"))
>> +                (string-to-syntax "\"/"))))
>
> If match n°2 is not inside a string, I think we should not skip all
> that's matched by the regexp (since it's not a string and may hence
> contain other things that need to be syntax-propertized).  I.e. The
> `unless' should be turned into an `if' and in the non-string case it
> should move point back to (match-end 2).

`syntax-ppss' moves point, so that's taken care of. See the second test 
in the same commit.

I agree that that's not obvious from reading the code, though.