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Re: No tilde expansion right after a quotation
From: |
Angel Tsankov |
Subject: |
Re: No tilde expansion right after a quotation |
Date: |
Mon, 16 Feb 2009 02:49:02 +0200 |
Paul Jarc wrote:
> Jon Seymour <jon.seymour@gmail.com> wrote:
>> On Mon, Feb 16, 2009 at 10:22 AM, Paul Jarc <prj@po.cwru.edu> wrote:
>>> CPATH=${CPATH:+$CPATH:}${#+~usr1/blah/blah}
>>
>> Out of interest, how does one derive that outcome from the documented
>> behaviour of bash? That is, which expansion rules are being invoked?
>
> It's ${parameter+word}, using $# (which is always set) as the
> parameter.
How do you know that $# is always set? And what about $@? To what values
are these parameters set outside any function?
A more appropriate parameter to use could be $? which, by pure logic, seems
to be at least as often set as is $#.
-Angel
- Re: No tilde expansion right after a quotation, (continued)
- Re: No tilde expansion right after a quotation, Jon Seymour, 2009/02/15
- Re: No tilde expansion right after a quotation, Angel Tsankov, 2009/02/15
- Re: No tilde expansion right after a quotation, Jon Seymour, 2009/02/15
- Re: No tilde expansion right after a quotation, Angel Tsankov, 2009/02/15
- Re: No tilde expansion right after a quotation, Jon Seymour, 2009/02/15
- Re: No tilde expansion right after a quotation, Angel Tsankov, 2009/02/15
- Re: No tilde expansion right after a quotation, Paul Jarc, 2009/02/15
- Re: No tilde expansion right after a quotation, Angel Tsankov, 2009/02/15
- Re: No tilde expansion right after a quotation, Jon Seymour, 2009/02/15
- Re: No tilde expansion right after a quotation, Paul Jarc, 2009/02/15
- Re: No tilde expansion right after a quotation,
Angel Tsankov <=
- Re: No tilde expansion right after a quotation, Jon Seymour, 2009/02/15
- Re: No tilde expansion right after a quotation, Paul Jarc, 2009/02/15
- Re: No tilde expansion right after a quotation, Jon Seymour, 2009/02/15
- Re: No tilde expansion right after a quotation, Paul Jarc, 2009/02/15
- Re: No tilde expansion right after a quotation, Jon Seymour, 2009/02/15
- Re: No tilde expansion right after a quotation, Angel Tsankov, 2009/02/15
- Re: No tilde expansion right after a quotation, Eric Blake, 2009/02/15
- Re: No tilde expansion right after a quotation, Angel Tsankov, 2009/02/16
- Re: No tilde expansion right after a quotation, Dave B, 2009/02/16
- Re: No tilde expansion right after a quotation, Angel Tsankov, 2009/02/16