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Re: RFE: Please allow unicode ID chars in identifiers
From: |
Chet Ramey |
Subject: |
Re: RFE: Please allow unicode ID chars in identifiers |
Date: |
Tue, 13 Jun 2017 16:02:12 -0400 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 |
On 6/13/17 2:30 PM, L A Walsh wrote:
>
>
> Chet Ramey wrote:
>> On 6/1/17 8:42 PM, L A Walsh wrote:
>>
>>> It would be a useful upgrade besides being a "good world citizen" ;-).
>>>
>>
>> The only way this makes sense is to extend the allowable set of
>> characters from the portable character set to the current locale.
>>
>>
>>> I'm guessing that if POSIX was set, then they'd be limited
>>> to the ASCII (American Standard Code for Information Interchange)
>>> set. ;^)
>>>
>>
>> Not quite; it's a subset of characters from the Portable Character Set.
>> That's the set of characters that Posix requires to be present in all
>> locales supported by Posix systems.
>>
>> http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_235
>>
>>
> Aren't all of those characters in ASCII? I.e. wouldn't
> ASCII be a limiting set? It may not be the minimal set, since
> many characters in ASCII aren't usable in varnames, but I
> thought the allowed chars in vars were some set <= ASCII?
This is correct. The portable character set is a subset of ASCII.
>
> It seems like it would be a greater support burden to
> allow one set for functions while restricting the allowed
> characters for variables to some smaller set, no?
No, of course not. The code has to exist, and it exists, to support Posix
standard identifiers. It's a greater support burden to add locale-specific
code to what already is there.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/
- Re: people working in Greg's locale (+euro) & display of Unicode names, (continued)
- Re: people working in Greg's locale (+euro) & display of Unicode names, PePa, 2017/06/15
- Re: people working in Greg's locale (+euro) & display of Unicode names, Chet Ramey, 2017/06/15
- Re: people working in Greg's locale (+euro) & display of Unicode names, L A Walsh, 2017/06/15
- Re: people working in Greg's locale (+euro) & display of Unicode names, Peter & Kelly Passchier, 2017/06/15
- Re: people working in Greg's locale (+euro) & display of Unicode names, Chet Ramey, 2017/06/15
- Re: char-class rules & please show examples of int. locales that use diff. char-class rules, L A Walsh, 2017/06/15
- Re: char-class rules & please show examples of int. locales that use diff. char-class rules, Chet Ramey, 2017/06/15
- Re: char-class rules & please show examples of int. locales that use diff. char-class rules, L A Walsh, 2017/06/15
Re: RFE: Please allow unicode ID chars in identifiers, Chet Ramey, 2017/06/13