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| From: | Bernd Eggink |
| Subject: | Re: echo $s{2,3} |
| Date: | Sat, 13 Dec 2008 10:44:09 +0100 |
| User-agent: | Thunderbird 2.0.0.18 (X11/20081105) |
jidanni@jidanni.org schrieb:
What happened to 2,3? Poof, gone.
$ s=a; echo $s{ $s{} $s} $s{1} $s{2,3} ${s}{4,5}
a{ a{} a} a{1} a4 a5
As the manual says, brace expansion is performed before any other expansions. So $s{2,3} expands to $s2 $s3, and that expands to nothing if neither s2 nor s3 are set.
Regards, Bernd -- Bernd Eggink http://sudrala.de
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