Re: hyphens (-) and underscores (_) are not treated as equivalent with completion-map-case and completion-ignore-case enabled

[Chet Ramey]

On 1/19/21 8:30 AM, awa54@cdak.net wrote:

> Bash Version: 5.1
> Patch Level: 4
> Release Status: release
>
> Description:
>
> man bash says:
>  > completion-map-case (Off)
>  > If set to On, and completion-ignore-case is enabled, readline treats 
> hyphens (-) and underscores (_) as equivalent when performing 
> case-insensitive filename matching and completion.
>
> $ bind -v|grep case
> set completion-ignore-case on
> set completion-map-case on
>
>
> Repeat-By:
>
> So it should be enabled and when I type
>
> $ touch _test
> $ chmod +x -t<TAB>
>
> it completes to
>
> $ chmod +x _test
>
> But neither
>
> $ ./-t<TAB>
> $ ls -t<TAB>
>
> complete.
>
> If I turn off progcomp with `shopt -u progcomp` (as suggested here 
> https://unix.stackexchange.com/questions/629844/bash-completion) it allows 
> the `ls` example to complete but not the other.

Thanks for the report. Those two options work for filename completion, but
not command completion (the bulk of which is handled outside readline).
I'll take a look at exposing that functionality outside readline, since
it's currently part of readline's filename completion, but that will take
some time and probably require a version bump.

--
``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/