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

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Date:	Thu, 15 Jan 2009 12:59:48 +0000
From:	Pádraig Brady <P@...igBrady.com>
To:	Måns Rullgård <mans@...sr.com>
CC:	linux-kernel@...r.kernel.org, linux-embedded@...r.kernel.org
Subject: Re: PATCH [0/3]: Simplify the kernel build by removing perl.

Måns Rullgård wrote:
> Alejandro Mery <amery@...nsde.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.
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