Re: Equivalence classes handled differently in mb vs non-mb patterns

[Chet Ramey]

On 7/28/20 4:17 AM, Harald van Dijk wrote:

> Bash Version: 5.0
> Patch Level: 18
> Release Status: release
> 
> Description:
>     In lib/glob/smatch.c, there are two functions that are used to
>     check equivalence classes in patterns: collequiv, and
>         collequiv_wc. The former is used if the pattern does not contain
>         any multi-byte characters, the latter otherwise, With
>         exceptions that are not relevant to this bug. The two functions
>         do not give the same results: collequiv does not implement the
>         fnmatch() fallback code that collequiv_wc does implement,
>         leading to inconsistent matching for ASCII-only equivalence
>         classes.

Thanks for the report, and the prodding to do the work that has been
pending in this area.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/