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Date:	Thu, 4 Sep 2014 10:51:35 +0200
Message-ID:	<CAEhDDbDan+CjB8Aytr2oeNo0yvj_kx7wnZmRa=hoZR=RW=T9YQ@mail.gmail.com>
Subject:	Re: cygwin rename util doesn't parse leading dash in expression argument correctly (thinks it is an option)
From:	Csaba Raduly <rcsaba AT gmail DOT com>
To:	cygwin list <cygwin AT cygwin DOT com>

Hi

On Tue, Sep 2, 2014 at 4:43 PM, Dat Head  wrote:
> Cygwin 1.7.30-1
>
> $ ls -l *-fixed.flac
> -rw-r--r-- 1 foo None 0 Sep  1 13:47 a-fixed.flac
> -rw-r--r-- 1 foo None 0 Sep  1 13:47 b-fixed.flac
>
> $ rename '-fixed' '' *-fixed.flac
> rename: unknown option -- f
>
> Usage:
>  rename [options] expression replacement file...
>
> Options:
>  -v, --verbose    explain what is being done
>  -V, --version    output version information and exit
>  -h, --help       display this help and exit

This is not a Cygwin problem. Unix tools usually interpret an argument
starting with a dash as options:

csabaraduly AT ubu:/tmp/ren $ uname -a
Linux ubu 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux

csabaraduly AT ubu:/tmp/ren $ cat /etc/issue
Ubuntu 14.04.1 LTS \n \l

csabaraduly AT ubu:/tmp/ren $ ls -l *-fixed.flac
-rw-rw-r-- 1 csabaraduly csabaraduly 0 Sep  4 10:42 a-fixed.flac
-rw-rw-r-- 1 csabaraduly csabaraduly 0 Sep  4 10:42 b-fixed.flac

csabaraduly AT ubu:/tmp/ren $ rename '-fixed' '' *-fixed.flac
Unknown option: i
Unknown option: x
Unknown option: e
Unknown option: d
Usage: rename [-v] [-n] [-f] perlexpr [filenames]


Marco already showed how to stop an argument with a leading dash from
being treated as options.

Csaba
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