@Cameron Simpson Thank you for your help. Here is what I get when I try the suggestions given:
> Try commenting this line out of your config and retry. I don't have this > explicitly in my settings, it comes from mutt's defaults for me. Commenting out "bind <return> display-message" from my muttrc has no impact. The <return> key still does nothing when I press it in index mode. > Also try running "mutt -F /dev/null" to bypass all the configuration. This worked!! When I run mutt with no config file (muttrc), the <Return> key does function properly to display-message in index mode. This is a clue that my muttrc is giving me the trouble. Also, I verified that typing ? to show keybinds DOES show that display-message and "display a message" are listed for <Return>. > Do you have another version of mutt to hand to run against the > same setup for comparison? I do not have another version to run with the same setup. ** One new bit of information: this behavior started after I upgraded my system from Ubuntu-Budgie 17.10 to Ubuntu-Budgie 18.04. I was second guessing myself about this, wondering if I only thought that <Return> used to open an email message. However, I am 95% sure that mutt worked fine before the upgrade to my Linux OS. I wonder if the newer version of Ubuntu, or the upgrade process itself somehow messed up the inner workings of my mutt. Searching the Ubuntu help pages gave no hints that anyone else has run into this. My next steps: (1) Mess with my muttrc to find out what is causing this strange behavior. (2) Try another version of mutt. Maybe I can figure out how to compile the newest version of mutt 1.10.0. Thanks! - TJ
