earance of \K in the pattern has no effect
for a partial match. Consider this pattern:
<pre>
  /abc\K123/
</pre>
If it is matched against "456abc123xyz" the result is a complete match, and the
ovector defines the matched string as "123", because \K resets the "start of
match" point. However, if a partial match is requested and the subject string
is "456abc12", a partial match is found for the string "abc12", because all
these characters are needed for a subsequent re-match with additional
characters.
</P>
<