Issue #14137 has been reported by MSP-Greg (Greg L).

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Bug #14137: Windows / MinGW - Regexp - Character Properties - General Category
https://bugs.ruby-lang.org/issues/14137

* Author: MSP-Greg (Greg L)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.5.0dev (2017-11-28 trunk 60925) [x64-mingw32]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
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While testing RDoc on Appveyor, and the recently 'added' literals.kpeg file, I had several errors across Ruby versions 2.2 thru trunk.

It seems that the `\p{}` constructs listed [here](https://msp-greg.github.io/ruby_trunk/file.regexp.html#label-Character+Properties) under 'General Category' generate an `invalid character property name {**}` error for many of the listed constructs.

Conversely, the constructs listed previously (eg \p{Alpha}, \p{Lower}, \p{Space}, etc) seem to work.

I briefly looked at the regexp tests, and they don't seem to test these.

Are these unavailable on Windows?



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