Re: case $var in $list) issue

[Lawrence Velázquez]

On Fri, Nov 1, 2024, at 1:00 AM, #!microsuxx wrote:
> ~ $ m=a\|b ; case b in $m) echo ye ; esac
> ~ $ m=a\|b ; case b in a|b) echo ye ; esac
> ye
>
> so vars like a|b dont work ?

Well, they do "work", they just don't result in multiple patterns.
Patterns undergo parameter expansion, but the results of expansions
are not reparsed to determine new patterns.  It's conceptually the
same reason that this only runs echo once:

        $ var='echo hi; echo bye'
        $ $var
        hi; echo bye

https://www.gnu.org/software/bash/manual/html_node/Conditional-Constructs.html#index-case

-- 
vq