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https://issues.apache.org/jira/browse/LANG-1043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15759028#comment-15759028
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Duncan Jones commented on LANG-1043:
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Any complaints if I close this? Looks like we've reached consensus that the
current method behaves like it should. I feel there hasn't been a strong case
put forward for why we should add another method that checks only alphabetic
characters.
> isAllUpperCase should only check Alpha characters
> -------------------------------------------------
>
> Key: LANG-1043
> URL: https://issues.apache.org/jira/browse/LANG-1043
> Project: Commons Lang
> Issue Type: Improvement
> Components: lang.*
> Affects Versions: 3.3.2
> Reporter: Frédéric JECKER
> Fix For: Discussion
>
> Attachments: LANG-1043.patch
>
>
> Currently, isAllUpperCase checks character by character if the current
> character is UpperCase or not using Character.isUpperCase().
> The problem is that characters like spaces aren't considered as uppercase
> characters.
> IMHO, isAllUpperCase should only check the state of alpha characters so that :
> - StringUtils.isAllUpperCase("ABC DEF GHI") = true (false currently)
> - StringUtils.isAllUpperCase("ABC / DEF") = true (false currently)
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