Re: $@ in function gives error

[Freek de Kruijf]

Op zaterdag 17 augustus 2024 00:29:23 CEST schreef u:
> On Fri, Aug 16, 2024, at 12:59 PM, freek--- via Bug reports for the GNU > 
There is no problem with "$@" or functions here.  The "problem" is
> that "$@" expands to multiple fields when there are two or more
> positional parameters, so (as the error message says) you end up
> running test(1) with too many arguments.  This is a usage error.
> 
>       $ set -x a b c d
>       $ test -n "$@"
>       + test -n a b c d
>       bash: test: too many arguments
> 
Apparently I have a problem with the concept of $@, I see it as list of zero 
or more non-whitespaced elements, and quotes around it makes it into a single 
element. Like a parameter p with a content of zero or more non-whitespaced 
elements, where the quotes make in into a single element.

Thanks for teaching me this concept. It must have some meaning in more 
complicated situations.

A test -n "$1" has also the effect I was looking for as the suggested one
$# -ne 0 .

-- 
fr.gr.

Freek de Kruijf