tmux/session/Picker/Order
- tmux/Mode/Tree applies the selected order separately at each level: sessions among sessions, each session's windows among windows, and each window's panes among panes.
- tmux's numeric order. Sessions follow their internal session IDs, which usually resembles creation order; windows and panes follow the numbers shown in tmux. This is the default and the most familiar order when window numbers are meaningful.
- Alphabetical by session name, window name, and pane title. This is useful when names are easier to remember than numbers.
- Most recently active sessions and windows first. Panes within a window go from least recently selected to most recently selected; press
r to put the most recently selected pane first.
- The visual stacking order of panes, mainly useful for floating panes in tmux 3.7 and later. The frontmost floating pane comes first, followed by the other floating panes and then regular panes. Sessions and windows are alphabetical because they do not have a z-index.
- Press
O in tree mode to cycle through index → name → activity → z. - Press
r to reverse the current order. choose-tree -O <order> sets the initial order.- Sources: tmux
choose-tree manual, tmux tree-order implementation, and tmux sort implementation.