Re: PATCH [0/3]: Simplify the kernel build by removing perl.

Måns Rullgård wrote:
> Alejandro Mery <amery <at> opensde.org> writes:
> 
>> I think the $(( ... )) bash-ism can be replaced with a simple .c helper toy.
> 
> The $(( ... )) construct is standard POSIX shell syntax, see
> http://www.opengroup.org/onlinepubs/000095399/utilities/xcu_chap02.html#tag_02_06_04
> 
> Bash supports $[ ... ] as an alternate syntax for the same thing.
> Perhaps you were thinking of that.

I think the misconception that $(( ... )) is a bashism is caused by
the wrong highlighting defaults chosen by vim. To fix this add this to ~/.vimrc

let g:is_posix = 1

That will also allow you to use the $(command) POSIX construct.
BTW, the vim syntax maintainers don't agree with changing this default:
http://groups.google.com/group/vim_dev/browse_thread/thread/41139a32772b2f5f

cheers,
Pádraig.