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Re: [POSIX conformance] "." looks for file in the current directory


From: Eric Blake
Subject: Re: [POSIX conformance] "." looks for file in the current directory
Date: Tue, 10 Jun 2008 06:21:13 -0600
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According to Andreas Schwab on 6/10/2008 3:20 AM:
| address@hidden writes:
|
|> SUSv3> Some older implementations searched the current directory
|> SUSv3> for the file, even if the value of PATH disallowed it.

Yes, bash has a bug here, to the point that even Autoconf documents bash's
bug:
http://www.gnu.org/software/autoconf/manual/html_node/Limitations-of-Builtins.html#Limitations-of-Builtins

|
| Ironically, the example just before the rationale depends exactly on
| finding the file in the current directory.

But I submitted a defect report on that very fact several months ago, and
that example has been corrected in the 200x draft of POSIX:

Search for "Number 164" in
http://www.opengroup.org/austin/aardvark/latest/xcubug2.txt

The corrected example reads:

cat foobar
foo=hello bar=world
. ./foobar
echo $foo $bar
hello world

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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