[jira] [Created] (ARROW-10432) [C++] CSV reader: support for multi-character / whitespace delimiter?

["Joris Van den Bossche (Jira)" <ji...@apache.org>]

Joris Van den Bossche created ARROW-10432:
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             Summary: [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


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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