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https://issues.apache.org/jira/browse/ACCUMULO-241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13178796#comment-13178796
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John Vines commented on ACCUMULO-241:
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I just hate arbitrary restrictions. I see no point for this whitelist approach
when a looser blacklist gives more power to the end user. Currently we only
have 3 non-text characters, so if people want to set up different levels of
delimiters they are limited.
> Visibility labels should blacklist non-ASCII characters instead of
> whitelisting select ASCII characters
> -------------------------------------------------------------------------------------------------------
>
> Key: ACCUMULO-241
> URL: https://issues.apache.org/jira/browse/ACCUMULO-241
> Project: Accumulo
> Issue Type: Improvement
> Affects Versions: 1.3.5
> Reporter: John Vines
> Labels: visibility
> Fix For: 1.3.6
>
>
> We currently whitelist our visibility labels to only allow alphanumerics and
> a few select delimiting characters. While we strive for human-readable
> labels, we should instead utilize a blacklist approach where we disallow
> parentheses, ampersands, pipes, and any non-ASCII characters. This will
> provide users with more flexibility in labeling, while still sticking to
> human readability.
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