From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexander Holler <holler@ahsoftware.de>
Date: Mon, 14 May 2012 11:21:32 +0200
Subject: [U-Boot] [PATCH 2/2] beagle: handle import of environments in
 files with CRLF as line endings
In-Reply-To: <4FB0CB5B.2040907@ahsoftware.de>
References: <1336913407-7383-1-git-send-email-holler@ahsoftware.de>
	<201205131909.49488.marek.vasut@gmail.com>
	<20120513184935.50B45202B33@gemini.denx.de>
	<201205132057.47247.marex@denx.de> <4FB01720.90402@ahsoftware.de>
	<20120513213811.B559D202B2F@gemini.denx.de>
	<4FB0CB5B.2040907@ahsoftware.de>
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Am 14.05.2012 11:07, schrieb Alexander Holler:
> Am 13.05.2012 23:38, schrieb Wolfgang Denk:
>> Dear Alexander,
>>
>> In message<4FB01720.90402@ahsoftware.de> you wrote:
>
>> What exactly are such error modes, by the way? I would expect that
>> trailing white space is pretty much harmless for most variable
>> settings?
>
> The problem already starts in u-boot itself:
>
> a="b\r"
>
> I'm not sure if \r on the u-boot-cmdline does work, but you know what I
> mean.
>
> $a=="b"
>
> is false
>
> fatload $a
>
> fails (if the file is named 'b').
>
> ...

And

a="1\r"

isn't a number. So anything which expects a number will fail. E.g.

fatls usb 0:${a}

and every arithmetic which uses ${a}

Regards,

Alexander