Eric Wong <[email protected]> writes:
> Using a YYYYmmddHHMMSS date representation is more meaningful to
> humans, especially when used for lookups on NNTP servers or linking
> to archive sites via Message-ID (e.g. mid.gmane.org or
> mid.mail-archive.com). This timestamp format more easily gives a
> reader of the URL itself a rough date of a linked message compared
> to having them calculate the seconds since the Unix epoch.
>
> Furthermore, having the MUA name in the Message-ID seems to be a
> rare oddity I haven't noticed outside of git-send-email. We
> already have an optional X-Mailer header field to advertise for
> us, so extending the Message-ID by 15 characters can make for
> unpleasant Message-ID-based URLs to archive sites.
>
> Signed-off-by: Eric Wong <[email protected]>
> ---
Sounds like a sensible goal. Just a few comments.
- Is it safe to assume that we always can use POSIX::strftime(), or
do we need some fallback? I am guessing that this is safe, as
POSIX has been part of the core modules for a long time, and the
script does "use 5.008" upfront.
- It is my understanding that, as "use" is a compilation-time
thing, hiding it inside a block does not help reducing the
start-up overhead (people can use "require" if they want to do a
lazy loading and optionally a fallback). Is my Perl5 outdated?
Otherwise, let's have it near the beginning of the script, close
to where we use Term::ReadLine and others.
Thanks.
> git-send-email.perl | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/git-send-email.perl b/git-send-email.perl
> index d356901..23141e7 100755
> --- a/git-send-email.perl
> +++ b/git-send-email.perl
> @@ -949,7 +949,8 @@ my ($message_id_stamp, $message_id_serial);
> sub make_message_id {
> my $uniq;
> if (!defined $message_id_stamp) {
> - $message_id_stamp = sprintf("%s-%s", time, $$);
> + use POSIX qw/strftime/;
> + $message_id_stamp = strftime("%Y%m%d%H%M%S.$$", gmtime(time));
> $message_id_serial = 0;
> }
> $message_id_serial++;
> @@ -964,7 +965,7 @@ sub make_message_id {
> require Sys::Hostname;
> $du_part = 'user@' . Sys::Hostname::hostname();
> }
> - my $message_id_template = "<%s-git-send-email-%s>";
> + my $message_id_template = "<%s-%s>";
> $message_id = sprintf($message_id_template, $uniq, $du_part);
> #print "new message id = $message_id\n"; # Was useful for debugging
> }
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