Michael Keppler created TEXT-111:
------------------------------------
Summary: WordUtils.wrap must calculate offset increment from
wrapOn pattern length
Key: TEXT-111
URL: https://issues.apache.org/jira/browse/TEXT-111
Project: Commons Text
Issue Type: Bug
Affects Versions: 1.2
Reporter: Michael Keppler
WordUtils.wrap(...) allows to specify the "wrapOn" regular expression to be
used as breakable characters. If this pattern is a zero width assertion or is
longer than 1 charachter, then the output is wrong because the wrapping
algorithm always skips one character (assuming the line break character has a
width of 1).
Example failing test:
{code:java}
assertThat(WordUtils.wrap("abcdef", 2, "\n", false,
"(?=d)")).isEqualTo("abc\ndef");
// produces "abc\nef" instead
{code}
Fix would be to change the 2 occurences of
{code:java}
offset = spaceToWrapAt + 1;
{code}
to
{code:java}
offset = spaceToWrapAt + matcher.end() - matcher.start();
{code}
thereby not advancing 1 character each time, but as many characters as were
just matched.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
