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https://issues.apache.org/jira/browse/CODEC-234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15993605#comment-15993605
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Christopher Schultz commented on CODEC-234:
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[~garydgregory] Yeah, that's the passage to which I was referring.
It's worth noting that the Hex class is already case-insensitive, as a result
of its use of Character.digit(char,int) method.
I'm okay not supporting 0 (zero) as an alias for O (capital oh) and 1 as an
alias for "I" (capital eye), at least not as a default.
But as it stands, this class behaves in a *very* surprising way for lower-case
input.
> Base32.decode should support lowercase letters
> ----------------------------------------------
>
> Key: CODEC-234
> URL: https://issues.apache.org/jira/browse/CODEC-234
> Project: Commons Codec
> Issue Type: Improvement
> Affects Versions: 1.10
> Reporter: Christopher Schultz
> Priority: Minor
> Attachments: CODEC-234.diff
>
>
> Base32.decode accepts a String input, but any lowercase characters are
> ignored -- e.g. Base32.decode("abcd2345") will give a different result than
> Base32.decode("ABCD1234") with no errors and a surprise to a developer.
> Accepting any case is desirable, as RFC 4648 makes it clear that
> case-insensitivity is a goal for Base32 encoding.
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