[arch-general] [PATCH 04/48] Use [[ ]] instead of [ ] for conditional checking when running in bash.

Daenyth Blank daenyth+arch at gmail.com
Wed Jun 30 18:01:19 EDT 2010


On Wed, Jun 30, 2010 at 17:56, Thomas Bächler <thomas at archlinux.org> wrote:
> Am 30.06.2010 23:47, schrieb Victor Lowther:
>> It is worth 10 - 30% speedup whenever you want to compare something.
>
> Where do you get this from? I always used [ ], and I found it
> sufficient. Why is [[ ]] faster?
>
>> -if [ "$USECOLOR" = "YES" -o "$USECOLOR" = "yes" ]; then
>> +if [[ $USECOLOR = YES || $USECOLOR = yes ]]; then
>
> Why do you get rid of the quoting here? Quoting is nice.
>
>

Quoting is not needed in [[ and it makes the code uglier.


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