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+Date: Wed, 18 Apr 2012 18:39:20 +0300\r
+Message-ID:\r
+ <CAMP44s1117VXAOnURjFAeva93oiJsKKPji4awN_SoNFo0QvPPw@mail.gmail.com>\r
+Subject: Re: [PATCH v2 1/3] Add 'compose' command\r
+From: Felipe Contreras <felipe.contreras@gmail.com>\r
+To: Jani Nikula <jani@nikula.org>\r
+Content-Type: text/plain; charset=UTF-8\r
+Cc: Felipe Contreras <felipe.contreras@ngmail.com>, notmuch@notmuchmail.org\r
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+\r
+On Wed, Apr 18, 2012 at 5:20 PM, Jani Nikula <jani@nikula.org> wrote:\r
+> On Wed, 18 Apr 2012 16:34:30 +0300, Felipe Contreras <felipe.contreras@gmail.com> wrote:\r
+>> On Wed, Apr 18, 2012 at 4:06 PM, Jani Nikula <jani@nikula.org> wrote:\r
+>>\r
+>> > Running "notmuch compose" more than once within a second would result in\r
+>> > identical message ids for the messages, which is not a good idea. That's\r
+>> > not likely in interactive use, but the notmuch cli is highly scriptable,\r
+>> > so someone is bound to hit this.\r
+>> >\r
+>> > Some paranoid might also be worried about "leaking" the time you run\r
+>> > "notmuch compose"... which may be different from the actual time you\r
+>> > send the message.\r
+>>\r
+>> It's still better than the current situation; nothing. In any case,\r
+>> people that have not needed this would not be affected; their UI would\r
+>> override the Message-ID.\r
+>>\r
+>> So do you have a better suggestion for a Message-ID?\r
+>\r
+> The easy way would be to just use g_mime_utils_generate_message_id()\r
+> [1]. It doesn't give you any control of the part before @, but I'm not\r
+> sure if that really matters.\r
+\r
+This is what gmime does:\r
+g_strdup_printf ("%lu.%lu.%lu@%s", (unsigned long int) time (NULL),\r
+(unsigned long int) getpid (), count++, fqdn);\r
+\r
+Which actually has some of the issues you mentioned.\r
+\r
+I can do the same if you want (add pid and count). The advantage of\r
+using our own format is that not only would it be more unique, but it\r
+would not have "@fqdn".\r
+\r
+> Alternatively you can write your own according to e.g. [2]. Glib appears\r
+> to have decent and portable support for pseudo random number\r
+> generation. But why bother? I'd go with gmime.\r
+\r
+But gmime doesn't have anything random. I would actually prefer to\r
+have something random though.\r
+\r
+-- \r
+Felipe Contreras\r