Commit 7fb75680 authored by Noam Postavsky's avatar Noam Postavsky

Fix debugging of string-match-p errors

* src/eval.c (call_debugger): Bind inhibit-changing-match-data to nil so
that debugger code that needs to do regexp match won't break
(Bug #23949, Bug #24166, Bug#16294).
parent 2c050617
......@@ -300,6 +300,11 @@ call_debugger (Lisp_Object arg)
specbind (Qinhibit_redisplay, Qnil);
specbind (Qinhibit_debugger, Qt);
/* If we are debugging an error while `inhibit-changing-match-data'
is bound to non-nil (e.g., within a call to `string-match-p'),
then make sure debugger code can still use match data. */
specbind (Qinhibit_changing_match_data, Qnil);
#if 0 /* Binding this prevents execution of Lisp code during
redisplay, which necessarily leads to display problems. */
specbind (Qinhibit_eval_during_redisplay, Qt);
......
......@@ -3390,6 +3390,7 @@ or other such regexp constructs are not replaced with this.
A value of nil (which is the normal value) means treat spaces literally. */);
Vsearch_spaces_regexp = Qnil;
DEFSYM (Qinhibit_changing_match_data, "inhibit-changing-match-data");
DEFVAR_LISP ("inhibit-changing-match-data", Vinhibit_changing_match_data,
doc: /* Internal use only.
If non-nil, the primitive searching and matching functions
......
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