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Message-ID: <46296A5C.7080907@math.uakron.edu>
Date: Fri, 20 Apr 2007 21:35:24 -0400
From: Dmitry Golovaty <dmitry AT math DOT uakron DOT edu>
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To: cygwin AT cygwin DOT com
Subject: Re: ImageMagick "display" and "convert" fail with a Visual C++ runtime    error
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Thanks again - everything works now.

Dmitry

Brian Dessent wrote:
> Dmitry Golovaty wrote:
>
>   
>> Thanks - the culprit is the MATLAB entry
>>
>> /cygdrive/c/Program Files/MATLAB/R2007a/bin/win32
>>
>> in the path; removing it fixes the problem ... is there way to pluck
>> it out automatically (e.g. in .bashrc) when the path is imported from
>> Windows at Cygwin start-up? Thanks again and sorry for starting
>> another thread - I did not subscribe in time to get the original
>> message.
>>     
>
> Interesting.
>
> Well, there are a number of ways you could handle this.  The first one I
> would try is just removing the offending directory from the PATH
> alltogether and see if Matlab still works.  A lot of programs like to
> add themselves to the PATH so that you can easily run them from a
> Command Prompt but they still work fine without actually being in the
> PATH if you launch them from a shortcut or whatnot.
>
> If you just want to remove the entry in your shell startup files you
> could try something like:
>
> PATH=${PATH/\/cygdrive\/c\/Program Files\/MATLAB\/R2007a\/bin\/win32:/}
>
> Advantages:
>
> - uses a shell-builtin, so there's no overhead during shell startup for
> having to run anything external
>
> Disadvantages:
>
> - very ugly on account of having to escape every / in the pattern.
>
> - bash-specific, so it should only go in .bashrc, not rcfiles that might
> be shared by other shells such as .profile or /etc/profile.
>
> - won't work if the directory to be removed is the last in PATH, as it
> requires matching the trailing ':' so as not to leave a "::" sequence
> anywhere (which actually means "put . in the PATH" which you probably
> don't want.)
>
> An alternative would be something that uses a tool like sed, awk, or
> perl to do the change, such as:
>
> PATH=$(echo $PATH | perl -F: -lane \
>    'print join(":",grep{!m,MATLAB/R2007a/bin/win32,i} @F)')
>
> Advantages:
>
> - should work with any shell
>
> - directory to remove is a regular expression, so you can specify a
> partial string to match, and use of ',' as delimiter means you don't
> have to quote slashes
>
> - splitting the PATH on ':' and treating it as a list means you don't
> have to worry about matching ':'s or where in the string the directory
> might occur
>
> Disadvantages:
>
> - Slower shell startup.
>
> Brian
>
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