feat(tmux): add popup window switcher

This is a script that will popup a window with a list of windows in a
fzf promp. When selected the window will be focused. If the window is in
another session the session will also be switched and the window focused

site-modules/core/files/bin/tmux-switch-pane

@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# Script taken from
+# https://gist.github.com/thugcee/41d1ba786fa5e66167ed6ee45e4f6346
+
+# customizable
+LIST_DATA="#{window_name} #{session_name} #{pane_current_command}"
+FZF_COMMAND="fzf-tmux -p --delimiter=: --with-nth 4 --color=hl:2"
+
+# do not change
+TARGET_SPEC="#{session_name}:#{window_id}:#{pane_id}:"
+
+# select pane
+LINE=$(tmux list-panes -a -F "$TARGET_SPEC $LIST_DATA" | $FZF_COMMAND) || exit 0
+# split the result
+args=(${LINE//:/ })
+# activate session/window/pane
+tmux select-pane -t ${args[2]} && tmux select-window -t ${args[1]} && tmux switch-client -t ${args[0]}

site-modules/core/files/tmux.conf

@@ -36,6 +36,9 @@ bind > resize-pane -R 1
 bind - resize-pane -D 1
 bind + resize-pane -U 1
 
+# Setup window switching via fzf
+bind-key f run-shell -b ~/.local/bin/tmux-switch-pane
+
 # bind : to command-prompt like vim
 # this is the default in tmux already
 bind : command-prompt