diff options
Diffstat (limited to 'HACKING')
| -rw-r--r-- | HACKING | 6 |
1 files changed, 2 insertions, 4 deletions
@@ -285,9 +285,7 @@ Character classes If there is only one character in the class, OP_CHAR or OP_CHARI is used for a positive class, and OP_NOT or OP_NOTI for a negative one (that is, for -something like [^a]). However, OP_NOT[I] can be used only with single-unit -characters, so in UTF-8 (UTF-16) mode, the use of OP_NOT[I] applies only to -characters whose code points are no greater than 127 (0xffff). +something like [^a]). Another set of 13 repeating opcodes (called OP_NOTSTAR etc.) are used for repeated, negated, single-character classes. The normal single-character @@ -467,4 +465,4 @@ item giving the length of the next item. Philip Hazel -December 2011 +February 2012 |