Update ncurses to fix input issues on tmux 3.3a

Updating to 3.3a¹, with the default option set², tmux started producing strange behavior. The symptoms included not registering backspaces, and using the <UP> key appended the previous command to the current one in the shell.

A discussion on the Homebrew repository produced some suggestions. Although updating zsh didn’t work, setting default-terminal from tmux-256color to screen-256color resolved the issue:

set -g default-terminal screen-256color 

However, another comment suggested that the change to tmux-265color as the default-terminal was a recent change to tmux, and that macOS ships with a very old version of ncurses. Updating ncurses resolved the issue, even when removing the default-terminal configuration option again.

1. tmux -V
   

   tmux 3.3a
   

   ↩︎

2. tmux show-options -s
   

   backspace C-?
   buffer-limit 50
   command-alias[0] split-pane=split-window
   command-alias[1] splitp=split-window
   command-alias[2] "server-info=show-messages -JT"
   command-alias[3] "info=show-messages -JT"
   command-alias[4] "choose-window=choose-tree -w"
   command-alias[5] "choose-session=choose-tree -s"
   copy-command ''
   default-terminal tmux-256color
   editor nvim
   escape-time 500
   exit-empty on
   exit-unattached off
   extended-keys off
   focus-events off
   history-file ''
   message-limit 1000
   prompt-history-limit 100
   set-clipboard external
   terminal-overrides
   terminal-features[0] xterm*:clipboard:ccolour:cstyle:focus:title
   terminal-features[1] screen*:title
   user-keys
   

   ↩︎