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https://issues.apache.org/jira/browse/ARROW-10432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17229383#comment-17229383
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Antoine Pitrou commented on ARROW-10432:
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Is that actually useful in the real world?
> [C++] CSV reader: support for multi-character / whitespace delimiter?
> ---------------------------------------------------------------------
>
> Key: ARROW-10432
> URL: https://issues.apache.org/jira/browse/ARROW-10432
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Joris Van den Bossche
> Priority: Major
>
> I don't know how useful general "multi-character" delimiter support is, but
> one specific type of it that seems useful is "whitespace delimited", meaning
> any whitespace (possibly multiple / different whitespace characters).
> In pandas you can achieve this either by passing {{delimiter="\s+"}} or
> specifying {{delim_whitespace=True}} (and both are equivalent, pandas special
> cases {{delimiter="\s+"}} as any other multi-character delimiter is
> interpreted as an actual regex and triggers the slower python engine intead
> of using the default c engine)
> cc [~apitrou] [~npr]
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