MouseDown1Pane in copy-mode-vi now cancels the mode instead of only clearing
the selection. Drag-select (root MouseDrag1Pane re-enters copy-mode) and
click-to-switch-pane are unchanged.
- mode-style bg=yellow,fg=black (black on a dark terminal was invisible)
- MouseDragEnd1Pane copies (pbcopy on macOS, tmux buffer elsewhere) without leaving copy-mode
- y/p use pbcopy/pbpaste (xsel is X11, absent on macOS); xsel kept as the Linux variant in a comment
- bind C-a send-prefix: C-a C-a sends a literal C-a to the shell
- is_vim reads #{pane_current_command}; the @tmux_vim_<pane> variable was never set, so C-h/j/k/l never reached vim
bchanot