Change in 'ar' behaviour

[Andreas Schwab]

Alan Modra <amodra@bigpond.net.au> writes:

> On Tue, Aug 10, 2004 at 10:28:12AM -0400, Jeff Baker wrote:
>> One of our customers has noticed a change in the behaviour of 'ar' 
>> between 2.10.1 and 2.12.1 or later.
>> 
>> 2.10.1
>> ------
>> $ ar rcs test.a object.o
>> $ ar rcs test.a dir/object.o
>> $ ar tv test.a
>> rw-rw-rw- 1003/513  21368 Jul 27 13:14 2004 object.o
>> rw-rw-rw- 1003/513  12384 Jul 27 13:14 2004 dir/object.o
>> 
>> 2.12.1 (or later)
>> -----------------
>> $ ar rcs test.a object.o
>> $ ar rcs test.a dir/object.o
>> $ ar tv test.a
>> rw-rw-rw- 1003/513  12384 Jul 27 13:14 2004 object.o
>
> I suspect this was a deliberate change, to make GNU ar comply with
> posix.

Yes, this is what POSIX says:

  All file operands can be pathnames. However, files within archives shall
  be named by a filename, which is the last component of the pathname used
  when the file was entered into the archive. The comparison of file
  operands to the names of files in archives shall be performed by
  comparing the last component of the operand to the name of the file in
  the archive.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany
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