moonchen commented on code in PR #13517:
URL: https://github.com/apache/trafficserver/pull/13517#discussion_r3751090391
##########
include/tsutil/Regex.h:
##########
@@ -68,7 +68,12 @@ class RegexMatches
/** Get the match at the given index.
*
- * @return The match at the given index.
+ * An index the match did not populate, and a group that did not participate
in the match, both
+ * yield an empty view. The result never has a null data(), so it can be
handed straight to
+ * memcpy(), std::string::append() and "%.*s". Use get_ovector_pointer() to
tell a group that did
+ * not participate from one that matched an empty string.
Review Comment:
Outdated
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