Re: curiosity: 'typeset -xr' vs. 'export -r'

[Chet Ramey]

On 12/11/22 9:37 PM, L A Walsh wrote:
>   This is mostly a 'nit', but I noticed I had
>     "typeset -xr"
>   in one of my scripts to mean export+read-only and
>   was wondering why
>     "export -r"
>   was disallowed (err message):
>
> bash: export: -r: invalid option
> export: usage: export [-fn] [name[=value] ...] or export -p
>
> This seems to be an unnecessary "make-wrong", no? 

No. There's no compelling reason to provide it. You can already do this,
as you discovered, using a builtin whose purpose is to assign attributes
to variables.

--
``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/