bash wildcard expansion

Christopher Faylor cgf@redhat.com
Thu Dec 21 19:37:00 GMT 2000


On Thu, Dec 21, 2000 at 10:06:45PM -0500, Christopher Faylor wrote:
>On Thu, Dec 21, 2000 at 09:53:49PM -0500, Puttkammer, Roman wrote:
>>> -----Original Message-----
>>> From: Christopher Faylor [ mailto:cgf@redhat.com ]
>>> Sent: Thursday, December 21, 2000 9:31 PM
>>> To: 'cygwin@cygwin.com'
>>> Cc: roman.puttkammer@multex.com
>>> Subject: Re: bash wildcard expansion
>>> 
>>> 
>>> On Thu, Dec 21, 2000 at 08:40:02PM -0500, Puttkammer, Roman wrote:
>>> >
>>> >I hope i'm not getting flamed for this one, but what am I missing? A 
>>> >command line argument is being expanded by bash even though 
>>> it's escaped.
>>> >
>>> >  /tibrv/src/examples/java# D:/jdk1.3/bin/java.exe \*
>>> >  Exception in thread "main" java.lang.NoClassDefFoundError:
>>> >cmlistener/class
>>> >
>>> > ...
>>> The fact that you notice that ls works as expected should be a pretty
>>> large clue.
>>> 
>>> ls.exe is a cygwin program.  java.exe is not a cygwin program.  You
>>> can't expect jave.exe to work well with a cygwin application 
>>> like bash.
>>> In this case, java.exe is expanding the command line '*' itself, just
>>> like any non-cygwin MS-DOS application does.
>>
>>
>>I see. Is there any way of achieving the same under cygwin as the
>>following command does under dos?
>>
>>	java myclass "*"
>>
>>This results a litteral asterix being passed to the class. I figgured
>>that in this case, under cygwin one of following commands
>>
>>	java myclass '"*"'
>>	cmd /c java test '"*"'
>>	cmd /c 'java test "*"'
>>
>>should have the same effect. But they don't - the double quotes are
>>not stripped from the argument (which java.exe seems to be doing when
>>invoked from DOS.)
>>
>>Is there any way to get the same behaviour under cygwin?
>
>Using '"*"' in bash causes a "*" (i.e., double-quote, asterisk,
>double-quote) to be passed to a program.  I just verified this with an
>"echoargs" program compiled with both mingw and MSVC.  When I use a
>'"*"' on the command line the mingw or msvc application sees a "*" as
>its argv[0].
>
>Or, more specifically, what the programs sees is:
>
>c:\tmp\echoargs.exe "\"*\""

Actually, on reflection, the "\"*\"" is the problem.  This is not
the same as "*", of course.  And, that's what you want.

I can't think of any way to tell cygwin to just quote an argument
with ", offhand.  I can't even think of a good way to fix this, if
it is a bug.

cgf

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