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Re: [Emacs-diffs] trunk r115596: Minor fixes for recent openp changes.
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From: |
Paul Eggert |
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Subject: |
Re: [Emacs-diffs] trunk r115596: Minor fixes for recent openp changes. |
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Date: |
Wed, 18 Dec 2013 14:45:31 -0800 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 |
Jarek Czekalski wrote:
> maybe you could add a comment
Sure, done in trunk bzr 115598.
> Could this be initialized to 0 or to invalid_timespec?
No, because valid time stamps can be negative, and neither
0 nor invalid_timestamp would compare less than these
valid time stamps.
Here's a shell transcript to illustrate:
$ touch -d 0001-12-25 Christmas-1-AD
$ ls -l oldfile
-rw-r--r--. 1 eggert eggert 0 Dec 25 0001 Christmas-1-AD
$ ls -l --time-style=+%s oldfile
-rw-r--r--. 1 eggert eggert 0 -62104665600 Christmas-1-AD
For this file, file-attributes returns the time stamp
(-947642 512 0 0), and -62104665600 == (-947642 << 16) + 512.