[Bash-completion-devel] [SCM] bash-completion branch, master, updated. 1.90-47-g068a1a1

[Ville Skyttä]

On 11/17/2011 02:30 AM, Igor Murzov wrote:

> I don't know if quotes are necessary in this particular case. But with quotes and without quotes results are different:
> 
> $ x="a b c"
> $ y=a
> $ z=( ${x#"$y"} )
> $ echo ${#z[@]}
> 2
> $ z=( "${x#"$y"}" )
> $ echo ${#z[@]}
> 1

Yes, for array constructs like that they are needed to protect
whitespace, that I know.

$ x="a b"
$ y=( $x )
$ for (( i=0; i < ${#y[@]}; i++ )); do echo "$i:'${y[i]}'"; done
0:'a'
1:'b'
$ y=( "$x" )
$ for (( i=0; i < ${#y[@]}; i++ )); do echo "$i:'${y[i]}'"; done
0:'a b'

But I'm not aware of a case where they're needed for normal variable
assignments.