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https://issues.apache.org/jira/browse/RAT-139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13661375#comment-13661375
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Sebb commented on RAT-139:
--------------------------
Likewise for AppliedApacheSoftwareLicense20#prune
> FullTextMatchingLicense.prune uses inefficient deleteAtChar
> -----------------------------------------------------------
>
> Key: RAT-139
> URL: https://issues.apache.org/jira/browse/RAT-139
> Project: Apache Rat
> Issue Type: Improvement
> Reporter: Sebb
>
> FullTextMatchingLicense.prune is quite inefficient.
> It first copies the entire string to a StringBuilder, then scans the buffer
> deleting characters that are not letters or digits.
> It should be a lot quicker to just copy the letters and digits once, skipping
> the rest.
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