Re: Verifying numeric values

[Andreas Kusalananda Kähäri]

[cut]

> > > > if it works, I like it.
> > >
> > > Have tested [[ $x = +([[:digit:]]) ]] and it works well.
> > >
> > > There must be something happening with using +([[:digit:]])
> > >
> > > in a case statement which is not straightforward.
> >
> > Invisible case statements are the worst. Try avoiding them.
> >
> > In the meanwhile, make sure that you get the parentheses right.
> >
> > case $x in +([[:digit:]])) echo whole number; esac
> >
> > or
> >
> > case $x in (+([[:digit:]])) echo whole number; esac
> >
> >
> > ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> >
> > Andreas (Kusalananda) Kähäri
> >
> > SciLifeLab, NBIS, ICM
> > Uppsala University, Sweden
> 
> Have used the construct in a function
> 
> ed-integer ()
> {
>   x=300
>   case $x in
>     (+([[:digit:]]))
>       echo "Integer Number"
>       ;;
>   esac
> }
> 
> It works as expected.  But the function seems to get called when
> I run the program "make" in my path, because I am getting
> 
> tolu@flora:
> + ~/Opstk/bld/gawk/gawk-5.1.0
> make
> /bin/bash: ed-integer: line 2: syntax error near unexpected token `('
> /bin/bash: ed-integer: line 2: ` +([[:digit:]]))'
> /bin/bash: error importing function definition for `ed-integer'
> /bin/bash: ed-integer: line 2: syntax error near unexpected token `('
> /bin/bash: ed-integer: line 2: ` +([[:digit:]]))'
> /bin/bash: error importing function definition for `ed-integer'
> make  all-recursive
> ...

Yes.  I can definitely see that happening under a number of possible
scenarios.  Just make sure the extglob shell option is set prior to
defining the function.

-- 
Andreas (Kusalananda) Kähäri
SciLifeLab, NBIS, ICM
Uppsala University, Sweden

.