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https://issues.apache.org/jira/browse/LANG-1378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16351726#comment-16351726
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Pascal Schumacher commented on LANG-1378:
-----------------------------------------
Thanks for the proposal.
I guess you are talking about StrSubstitutor? This class has been deprecated in
version 3.6 and is now maintained as part of commons-text.
I will therefore move this issue to commons-text.
> Conditional expansion (variation of default value syntax)
> ---------------------------------------------------------
>
> Key: LANG-1378
> URL: https://issues.apache.org/jira/browse/LANG-1378
> Project: Commons Lang
> Issue Type: Improvement
> Components: lang.text.*
> Affects Versions: 3.7
> Reporter: Charles Fineman
> Priority: Major
> Fix For: 3.8
>
>
> I'd like to propose an extension to the current syntax (and would consider
> submitting a PR for it if folks are in favor of the proposal)
> There is currently support for: ${undefined.number:-1234567890}
> I'm proposing adding: ${defined.number:?The number is ${defined.number}}
> My quick glance of the recursive interpolation makes me feel this would be
> relatively straightforward.
>
> Curious when the next version would be released (I asked because I could
> actually make use of this in something I'm working on right now)
>
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