[mu4e bug] auto buffer switch to mu4e:headers in current buffer in a different frame

[lrpereira]

Describe the bug

Running two frames, A(start frame) and B. Frame A is a normal Emacs GUI. Frame B is emacsclient -t , i.e. from terminal, with scratch buffer opened. Upon receiving new email, mu4e is automatically switching the buffer in frame B to mu4e:headers.

This does not happen if frame A is GUI and frame B is also GUI. Also, if in frame A, GUI window, I only start mu4e and stay in mu4e-main, and frame B is emacsclient -t, i.e. from terminal, the buffer does not switch automatically.

How to Reproduce

Frame A Start with emacs -Q Load minimal config to setup inbox Run (mu4e) and (mu4e-headers-search inbox-query), which fetches full inbox

Frame B Open a new terminal. Run emacsclient -t Send a test email Wait until mu4e pulls email Buffer in this frame switches to mu4e:headers buffer

I can reproduce this consistently.

Environment

Fedora 40 GNU Emacs 29.4, no 3rd party extensions mu-1.12.6