X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=regcomp.h;h=2ac1be11e995394266a2fc276249e4d1a0e8a601;hb=7a71a5145432d34189dc8574df73a361bd48e4ee;hp=1664871d0158e87690bdea9a962f1ab88cd4f25f;hpb=24d786f4d2806834028ce32abc1769da2e945f9b;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/regcomp.h b/regcomp.h
index 1664871..2ac1be1 100644
--- a/regcomp.h
+++ b/regcomp.h
@@ -18,6 +18,24 @@ typedef OP OP_4tree;			/* Will be redefined later. */
 /* Be really agressive about optimising patterns with trie sequences? */
 #define PERL_ENABLE_EXTENDED_TRIE_OPTIMISATION 1
 
+/* Use old style unicode mappings for perl and posix character classes
+ *
+ * NOTE: Enabling this essentially breaks character class matching against unicode 
+ * strings, so that POSIX char classes match when they shouldn't, and \d matches 
+ * way more than 10 characters, and sometimes a charclass and its complement either
+ * both match or neither match.
+ * NOTE: Disabling this will cause various backwards compatibility issues to rear 
+ * their head, and tests to fail. However it will make the charclass behaviour 
+ * consistant regardless of internal string type, and make character class inversions
+ * consistant. The tests that fail in the regex engine are basically broken tests.
+ *
+ * Personally I think 5.12 should disable this for sure. Its a bit more debatable for
+ * 5.10, so for now im leaving it enabled.
+ *
+ * -demerphq
+ */
+#define PERL_LEGACY_UNICODE_CHARCLASS_MAPPINGS 1
+
 /* Should the optimiser take positive assertions into account? */
 #define PERL_ENABLE_POSITIVE_ASSERTION_STUDY 0