Cwd::abs_path behavior with non-existant paths

["John E. Malmberg" <wb8tyw@qsl.net>]

Before the 5.10 release, we were working on implementing an interface to 
realpath() on VMS.

We discovered that the VMS behavior for non-existant paths was different 
than on other platforms.

To get a fair sampling, could this test be run on a number of different 
platforms to see what the consensus on the proper behavior should be.

perl -mCwd -e "print Cwd::abs_path('foo/non-existant.file')"

perl -mCwd -e "print Cwd::abs_path('/foo/non-existant.file')"

perl -mCwd -e "print Cwd::abs_path('non-existant.file')"

On VMS, this this routine is doing syntax only lookup.  What I am 
looking at doing is implementing it so that it actually does a lookup of 
the file.

On UNIX, the foo/non-existant.file returns nothing, but the other two 
return the same as the input.

The routines on VMS to do a realpath input will only work on existing 
files, so I need to know the expected / intended behavior for 
non-existent files.

-John
wb8tyw@qsl.net
Personal Opinion Only

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Follow-Ups from:

Ben Morrow <ben@morrow.me.uk>
"Ken Williams" <kenahoo@gmail.com>

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