[Emacs-diffs] emacs-25 223b3f0: Improve regex to not trigger stack overflow

[Tassilo Horn]

branch: emacs-25
commit 223b3f0d845a6a85124c004e6fe03b4bdc4f1e17
Author: Tassilo Horn <address@hidden>
Commit: Tassilo Horn <address@hidden>

    Improve regex to not trigger stack overflow
    
    * lisp/textmodes/reftex-vars.el (reftex-label-regexps): Improve regex in
    order not to trigger a stack overflow in regex matcher with unbalanced
    brackets (bug#22146).
---
 lisp/textmodes/reftex-vars.el |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lisp/textmodes/reftex-vars.el b/lisp/textmodes/reftex-vars.el
index 5683e62..fcab136 100644
--- a/lisp/textmodes/reftex-vars.el
+++ b/lisp/textmodes/reftex-vars.el
@@ -877,7 +877,7 @@ DOWNCASE    t:   Downcase words before using them."
       "\\\\label{\\(?1:[^}]*\\)}"
       ;; keyvals [..., label = {foo}, ...] forms used by ctable,
       ;; listings, minted, ...
-      "\\[[^][]*\\<label[[:space:]]*=[[:space:]]*{?\\(?1:[^],}]+\\)}?")
+      
"\\[[^][]\\{0,2000\\}\\<label[[:space:]]*=[[:space:]]*{?\\(?1:[^],}]+\\)}?")
     "List of regexps matching \\label definitions.
 The default value matches usual \\label{...} definitions and
 keyval style [..., label = {...}, ...] label definitions.  It is