1 files changed, 3 insertions, 1 deletions
diff --git a/regcomp.h b/regcomp.h
index 16cf957816..9053242fb4 100644
--- a/regcomp.h
+++ b/regcomp.h
@@ -365,7 +365,9 @@ typedef struct re_scream_pos_data_s
  *   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.)
  */