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https://issues.apache.org/jira/browse/ARROW-13879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17423460#comment-17423460
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Eduardo Ponce commented on ARROW-13879:
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Well, the issue is that `string_view` is used to encapsulate binary data in
certain parts and [`string_view.length()` is used to get the size but it stops
at the first null
byte|https://github.com/apache/arrow/blob/master/cpp/src/arrow/vendored/string_view.hpp#L421],
thus providing an incorrect size.
> [C++] Mixed support for binary types in regex functions
> -------------------------------------------------------
>
> Key: ARROW-13879
> URL: https://issues.apache.org/jira/browse/ARROW-13879
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Weston Pace
> Assignee: Eduardo Ponce
> Priority: Major
> Labels: kernel, pull-request-available, types
> Fix For: 6.0.0
>
> Time Spent: 3h 50m
> Remaining Estimate: 0h
>
> The functions count_substring, count_substring_regex, find_substring, and
> find_substring_regex all accept binary types but the function extract_regex,
> match_substring, match_substring_regex, match_like, starts_with, ends_with,
> split_pattern, and split_pattern_regex do not.
> They should all accept binary types.
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