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bug#4175: 23.1; nxml-mode: Internal error in rng-validate-mode triggered
From: |
Eli Zaretskii |
Subject: |
bug#4175: 23.1; nxml-mode: Internal error in rng-validate-mode triggered |
Date: |
Fri, 12 Feb 2016 14:02:10 +0200 |
> From: Stephen Berman <stephen.berman@gmx.net>
> Cc: Andrew Hyatt <ahyatt@gmail.com>, 4175@debbugs.gnu.org
> Date: Fri, 12 Feb 2016 11:12:23 +0100
>
> I can reproduce it in a91b4b51ddf2575d821adb8b84fdf32cff83886e (GNU
> Emacs 25.0.90.2 (x86_64-suse-linux-gnu, GTK+ Version 3.14.15) of
> 2016-02-11).
How large is the run-time stack on that system?
> Here's the backtrace:
>
> Debugger entered--Lisp error: (error "Stack overflow in regexp matcher")
>
> looking-at("\\(\\(?:\\(xmlns\\)\\|[_[:alpha:]][-._[:alnum:]]*\\)\\(:[_[:alpha:]][-._[:alnum:]]*\\)?\\)[
>
> \n]*=\\(?:[
> \n]*\\('[^<'&
> \n ]*\\([&
> \n ][^<']*\\)?'\\|\"[^<\"&
> \n ]*\\([&
> \n ][^<\"]*\\)?\"\\)\\(?:\\([
> \n]*>\\)\\|\\(?:\\([
> \n]*/\\)\\(>\\)?\\)\\|\\([
> \n]+\\)\\)\\)?")
> xmltok-scan-attributes()
> xmltok-scan-after-lt()
> xmltok-forward()
> rng-forward()
> rng-do-some-validation-1(rng-validate-while-idle-continue-p)
> rng-do-some-validation(rng-validate-while-idle-continue-p)
> rng-validate-while-idle(#<buffer url25099xa>)
Thanks. Perhaps some regexp guru could suggest how to make this
regexp less greedy.