* n - Root of op tree for (?{EVAL}) item
* o - Start op for (?{EVAL}) item
* p - Pad for (?{EVAL} item
- * s - swash for unicode-style character class
+ * s - swash for unicode-style character class, and the multicharacter
+ * strings resulting from casefolding the single-character entries
+ * in the character class
* 20010712 mjd@plover.com
* (Remember to update re_dup() and pregfree() if you add any items.)
*/