On 2015-07-19 00:59, David Bremner wrote: > mailinglists at nawaz.org writes: > >> BTW, all I really want to do is modify the From: field based on the >> recipients (for every email, with no default From). I'll welcome >> suggestions for existing ways to do that. I Googled a little, but >> didn't >> find a clear good solution. Furthermore, I expect over time the >> rules by >> which I pick the From: field will get more complex than my knowledge >> of >> Elisp. > > I'm afraid it's a bit "some-assembly-required", but let me mention > one > possible solution. > > At least if you just want to have a regular expression match on the > recipient, then the example configuration in message-templ [1] may be > enough to get you started. You'd have to either call > message-templ-config-exec in a hook, or bind it to a key and call it > manually to set up the headers before sending. > > [1]: http://pivot.cs.unb.ca/git?p=message-templ.git;a=tree
Thanks for this. I'll see if I can follow the Elisp code. After sending my email, it occurred to me that message handling is not notmuch's job - that's passed on to message-mode. I figured message-mode must have some kind of hook before sending the email, and sure enough, it does have message-send-hook. The example at www.gnu.org/software/emacs/manual/html_mono/message.html shows how one can add headers before sending. There's also message-alternative-emails, although that likely works only if you're replying to an email. A little frustrating: They have a number of functions to modify/read fields like Subject, or To - but none for From! So I'll still have to do some surgery. I'll likely use the send-message-hook to: 1. Read the "To" & "cc" values. 2. Pass them to an external Python script. 3. Get the appropriate "From" field from the Python script. 4. Insert it into the From: field. How does one do steps 2 & 3 in Elisp? I just need a pointer. (Just Googled and saw this: http://stackoverflow.com/questions/5014246/how-to-capture-standard-output-of-a-shell-command-in-elisp) Thanks,