On Wed 15 Sep 2021 at 16:21:12 (-0500), Nate Bargmann wrote: > * On 2021 15 Sep 14:20 -0500, to...@tuxteam.de wrote: > > On Wed, Sep 15, 2021 at 02:01:23PM -0400, Greg Wooledge wrote: > > > On Wed, Sep 15, 2021 at 12:58:10PM -0500, Nate Bargmann wrote: > > > > * On 2021 15 Sep 10:44 -0500, Jonathan Dowland wrote: > > > > > What does this command report? > > > > > > > > > > ;see --norun application/octet-stream:/dev/null > > > > > Jonathan's message confused me too. As far as I can tell, "see" is > > > a *shell* command, not a mutt command [...] > > > > Perhaps the semicolon was intended to be an exclamation mark (!) > > (although, assuming Jonathan has a USish keyboard layout they are > > far apart indeed). > > Indeed! That works. > > I missed it in the help list as my mind was fixated on the ;. Other > programs like Vim use ! as a means to execute a shell command. > > It should have been so obvious...
I think what your system is doing is as follows: You probably have in your (default) /etc/Muttrc: # Use mime.types to look up handlers for application/octet-stream. Can # be undone with unmime_lookup. mime_lookup application/octet-stream That sends mutt looking in /etc/mime.types where it finds the line: text/x-diff diff patch Your attachment had the extension ".patch", so it searches your and the system's mailcap files for "text/x-diff", fails to find it, and eventually hits the default entry: text/*; less '%s'; needsterminal which it obeys. BTW, your shell command, !see --norun application/octet-stream:/dev/null will give you an answer in the context of a subshell, and not necessarily in the context of mutt itself. For example, on my shell: $ see --norun text/html:/dev/null /usr/bin/sensible-browser /dev/null $ but the special mailcap prioritised by my mutt defines: text/html; /usr/bin/lynx -force-html -localhost -stdin and any subshell would know nothing about that. About the ";", it could also be an accidentally unshifted ":", and it might be easy to mis-remember: ":" is mutt's keystroke for entering mutt commands, whereas "!" is mutt's keystroke for entering shell commands. Cheers, David.