Re: Bash-4 breaks $(<command>) syntax on FreeBSD

[Chet Ramey]

Gerard wrote:

> Fair enough. I know that several users of FreeBSD are complaining all
> ready and have switched back to Bash-3.x.
> 
> This is a short script, named "t.sh" that will produce the error
> message:
> 
> #!/usr/bin/env bash
> 
> if $(which gpg2); then
>    printf "gpg2 located"
> fi
>    
> This is the error message:
> 
> ./t.sh: command substitution: line 4: syntax error near unexpected
> token `)' ./t.sh: command substitution: line 4: `which gpg2)'
> 
> Even something as simple as:
> 
> echo $(uname)
> 
> will produce the same error message.

I've corresponded with the FreeBSD port maintainer, and this is due to
the port build using yacc instead of bison.  Using bison fixes it.  I
don't know why yacc doesn't work yet.

Chet

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer

Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/