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https://issues.apache.org/jira/browse/LANG-1827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18088252#comment-18088252
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Sarankumar Baskar commented on LANG-1827:
-----------------------------------------
PR Link [https://github.com/apache/commons-lang/pull/1700/changes] for the
improvement story
> "DurationFormatUtils.lexx() does not support escaped single quotes ('' should
> produce literal ')"
> -------------------------------------------------------------------------------------------------
>
> Key: LANG-1827
> URL: https://issues.apache.org/jira/browse/LANG-1827
> Project: Commons Lang
> Issue Type: Improvement
> Reporter: Sarankumar Baskar
> Priority: Major
>
> *DurationFormatUtils.class* uses single quotes to delimit literal text in
> format
> patterns, e.g. "H' hours 'm' minutes'" → "2 hours 30 minutes".
>
> However, there is currently no way to include a literal single-quote
> (apostrophe) character in the output. The class Javadoc explicitly states:
>
> "Note: It's not currently possible to include a single-quote in a format."
>
> and there is a TODO comment in the lexx() parser method (line 672):
>
> // TODO: Need to handle escaping of '
>
> java.text.SimpleDateFormat solves this by treating two consecutive single
> quotes ('') as an escaped literal apostrophe — both inside and outside
> quoted sections. DurationFormatUtils should follow the same convention
> for consistency with the JDK and user expectations.
>
> {*}Current behavior{*}:
> Format: "H' o''clock'"
> Expected: "2 o'clock"
> Actual: "2 oclock" (apostrophe is silently dropped)
>
> Format: "'it''s 'H' hours'"
> Expected: "it's 2 hours"
> Actual: "its 2 hours" (apostrophe is silently dropped)
>
> Format: "H'''h'"
> Expected: "2'h"
> Actual: "2h" (apostrophe is silently dropped)
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