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https://issues.apache.org/jira/browse/TEXT-111?focusedWorklogId=206865&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-206865
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ASF GitHub Bot logged work on TEXT-111:
---------------------------------------
Author: ASF GitHub Bot
Created on: 03/Mar/19 08:04
Start Date: 03/Mar/19 08:04
Worklog Time Spent: 10m
Work Description: kinow commented on issue #104: TEXT-111
URL: https://github.com/apache/commons-text/pull/104#issuecomment-468999006
Change looks good to me! No backward compatibility issues, Travis-CI is
happy with the code changed, a test was included. And it looks like it fixes
the bug. @PascalSchumacher would you like to have a look too before it gets
merged? I saw that you commented in the issue some time ago. Cheers
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Issue Time Tracking
-------------------
Worklog Id: (was: 206865)
Time Spent: 10m
Remaining Estimate: 0h
> 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
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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.
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