diff options
Diffstat (limited to 'regcomp.c')
| -rw-r--r-- | regcomp.c | 13 |
1 files changed, 6 insertions, 7 deletions
@@ -12397,15 +12397,14 @@ parseit: * Now we can see about various optimizations. Fold calculation (which we * did above) needs to take place before inversion. Otherwise /[^k]/i * would invert to include K, which under /i would match k, which it - * shouldn't. */ + * shouldn't. Therefore we can't invert folded locale now, as it won't be + * folded until runtime */ - /* Optimize inverted simple patterns (e.g. [^a-z]). Note that we haven't - * set the FOLD flag yet, so this does optimize those. It doesn't - * optimize locale. Doing so perhaps could be done as long as there is - * nothing like \w in it; some thought also would have to be given to the - * interaction with above 0x100 chars */ + /* Optimize inverted simple patterns (e.g. [^a-z]) when everything is known + * at compile time. Besides not inverting folded locale now, we can't invert + * if there are things such as \w, which aren't known until runtime */ if (invert - && ! LOC + && ! (LOC && (FOLD || (ANYOF_FLAGS(ret) & ANYOF_CLASS))) && ! depends_list && ! unicode_alternate && ! HAS_NONLOCALE_RUNTIME_PROPERTY_DEFINITION) |