[ruby-core:104353] [Ruby master Bug#14137] Windows / MinGW - Regexp - Character Properties - General Category

Issue #14137 has been updated by jeremyevans0 (Jeremy Evans).

Status changed from Open to Closed

I tested this using RubyInstaller versions on Windows.  This appears related to regexp encoding, and not a bug, with the same behavior between Ruby 2.0 and 3.0:

```
C:\>c:\Ruby30-x64\bin\ruby -e "p(/\p{L}/.match('a'))"
-e:1: invalid character property name {L}: /\p{L}/

C:\>c:\Ruby30-x64\bin\ruby -e "p(/\p{L}/u.match('a'))"
#<MatchData "a">

C:\>c:\Ruby30-x64\bin\ruby -Ku -e "p(/\p{L}/.match('a'))"
#<MatchData "a">

C:\>c:\Ruby200-x64\bin\ruby -e "p(/\p{L}/.match('a'))"
-e:1: invalid character property name {L}: /\p{L}/

C:\>c:\Ruby200-x64\bin\ruby -e "p(/\p{L}/u.match('a'))"
#<MatchData "a">

C:\>c:\Ruby200-x64\bin\ruby -Ku -e "p(/\p{L}/.match('a'))"
#<MatchData "a">
```

The documentation for this feature (https://docs.ruby-lang.org/en/master/doc/regexp_rdoc.html#label-Character+Properties) says: `A Unicode character's General Category value can also be matched`, which I think implies this should only work for Unicode regexps, and not other regexps.  So I think the current behavior is expected and not a bug.

----------------------------------------
Bug #14137: Windows / MinGW - Regexp - Character Properties - General Category
https://bugs.ruby-lang.org/issues/14137#change-92580

* Author: MSP-Greg (Greg L)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.5.0dev (2017-11-28 trunk 60925) [x64-mingw32]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
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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