#
# The code in regexec.c for the \X match construct is intimately tied to the
# regular expression in UAX #29 (http://www.unicode.org/reports/tr29/). You
-# should see if it has changed, and if so regexec.c should be modified. The
+# should see if it has changed, and if so, regexec.c should be modified. The
# current one is
# ( CRLF
-# | Prepend* ( Hangul-syllable | !Control )
-# ( Grapheme_Extend | Spacing_Mark)*
+# | Prepend* ( RI-sequence | Hangul-Syllable | !Control )
+# ( Grapheme_Extend | SpacingMark )*
# | . )
#
# mktables has many checks to warn you if there are unexpected or novel things