Properly disable terminal capabilities for alternate screen in tmux
A lot of places recommend to use the following tmux config to disable the (outer) terminal emulator's alternate screen:
set -g terminal-overrides 'xterm*:smcup@:rmcup@'
But this will override the default value of the `terminal-overrides` setting, and therefore the following should be used instead:
set -ga terminal-overrides ',xterm*:smcup@:rmcup@'
Without using the "append" (-a) option with "set", the defaults would be overwritten, which are currently:
*256col*:colors=256,xterm*:XT:Ms=\E]52;%p1%s;%p2%s\007:Cs=\E]12;%p1%s\007:Cr=\E]112\007:Ss=\E[%p1%d q:Se=\E[2 q,screen*:XT
Another method to remove the "smcup" and "rmcup" capabilities globally is the following (via ~/.zshrc, ~/.bashrc etc):