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https://issues.apache.org/jira/browse/IO-679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17167408#comment-17167408
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Gary D. Gregory commented on IO-679:
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[~proneel]
Thank you for your report!
May you provide your code as a PR on GitHub please?
> input.AbstractCharacterFilterReader passes count of chars read to filter, not
> the filter char
> ---------------------------------------------------------------------------------------------
>
> Key: IO-679
> URL: https://issues.apache.org/jira/browse/IO-679
> Project: Commons IO
> Issue Type: Bug
> Components: Streams/Writers
> Affects Versions: 2.7
> Reporter: Proneel Guptan
> Priority: Major
> Attachments: AbstractCharacterFilterIssue.java
>
>
> Ran into a bug with AbstractCharacterFilterReader where I noticed that my
> filter was not receiving the actual characters, but was instead receiving an
> int value corresponding to the number of chars in my input stream buffer.
> I looked at the [source
> file|https://github.com/apache/commons-io/blob/master/src/main/java/org/apache/commons/io/input/AbstractCharacterFilterReader.java]
> and realized that on line 64:
> {{if (filter(read)) {}}
> should have been:
> {{if (filter(cbuf[readPos])) {}}
> 'read` has the number of chars read from the source reader, not the code
> point of the character read.
> I have attached a sample program that illustrates the issue.
> I can work on a patch and submit it when done. I will add a test case in the
> patch.
>
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