On Thu, Oct 05, 2006 at 12:23:41AM +0200, Reuti wrote:
[...]
> Curly braces expansion only works with at least one comma
> (,). This also works, if the appears at least once
> inside some apostrophes and has no function.
>
> Repeat-By:
> [EMAIL PROTECTED]:~> bash --version
> GNU bash, version 2.05b.0(1)-release (powerpc-apple-darwin8.0)
> Copyright (C) 2002 Free Software Foundation, Inc.
> [EMAIL PROTECTED]:~> echo {"x x"} # No {} in output expected.
> {x x}
> [EMAIL PROTECTED]:~> echo {"xx"} # No {} in output expected.
> {xx}
> [EMAIL PROTECTED]:~> echo {"xx","yy"} # Works fine.
> xx yy
> [EMAIL PROTECTED]:~> echo {"x,x"} # Add a comma to get it
> working, i.e. remove the {}.
> x,x
> [EMAIL PROTECTED]:~>
>
> Also this seems to be strange:
>
> [EMAIL PROTECTED]:~> echo {"klklkl"} {1,2,3} # Only second {}
> works correctly.
> {klklkl} 1 2 3
> [EMAIL PROTECTED]:~> echo {"klklkl"}{1,2,3} # Completely messed up.
> {klklkl}{1,2,3}
Only that one is a bug, it should output {klklkl}1 {klklkl}2
{klklkl}3
The other ones work as documented.
From info -f bash -n 'Brace Expansion'
| A correctly-formed brace expansion must contain unquoted
| opening and closing braces, and at least one unquoted comma
| or a valid sequence expression. Any incorrectly formed brace
| expansion is left unchanged.
> [EMAIL PROTECTED]:~> echo {"kl,klkl"}{1,2,3} # Add a comma to
> get it working
> kl,klkl1 kl,klkl2 kl,klkl3
> [EMAIL PROTECTED]:~>
[...]
--
Stéphane
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