Questions tagged [signals]

I'd like to know how GNU Emacs responds, by defaults, to such signals as HUP and USR1. Is this behavior documented in any manual? If so, where? If not, is there a place I could look in the source code?

The documentation quoted in this answer mentions two different way of installing a handler for a SIGUSR1 signal, namely: (define-key special-event-map [sigusr1] 'sigusr1-handler) and (global-set-key [signal usr1] 'sigusr1-handler) (I changed the…