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 <normalperson@xxxxxxxx> --- v2 - moved "use" to the top Thanks to Dscho for addressing Windows comments: http://mid.gmane.org/alpine.DEB.2.20.1604061505010.3371@virtualbox 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..52cf828 100755 --- a/git-send-email.perl +++ b/git-send-email.perl @@ -19,6 +19,7 @@ use 5.008; use strict; use warnings; +use POSIX qw/strftime/; use Term::ReadLine; use Getopt::Long; use Text::ParseWords; @@ -949,7 +950,7 @@ 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, $$); + $message_id_stamp = strftime("%Y%m%d%H%M%S.$$", 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 } -- EW -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html