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From "Gary Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TEXT-127) Detect when a variable is unknown in StringSubstitutor
Date Wed, 24 Oct 2018 22:01:00 GMT

    [ https://issues.apache.org/jira/browse/TEXT-127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16662917#comment-16662917
] 

Gary Gregory commented on TEXT-127:
-----------------------------------

The best path is to submit a PR on GitHub IMO. I would make sure the current behavior is not
broken, IOW, don't throw an exception unless I call an API to enable it. Don't forget unit
tests ;-)

> Detect when a variable is unknown in StringSubstitutor
> ------------------------------------------------------
>
>                 Key: TEXT-127
>                 URL: https://issues.apache.org/jira/browse/TEXT-127
>             Project: Commons Text
>          Issue Type: Improvement
>            Reporter: Jean-Baptiste REICH
>            Priority: Minor
>
> Currently, StringSubstitutor is not replacing a variable that is unknown. It would be
nice to define the behavior in this case and to allow raising an exception.
> A workaround is to define a custom StringLookup that raises an exception when the variable
is unknown but this prevent from using the default value feature from StringSubstitutor



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