From f67a54cadd6db7ebe5863f2bc041f526a1bd2c16 Mon Sep 17 00:00:00 2001
From: Sebastian Bugge <vsbugge@samfundet.no>
Date: Mon, 27 Feb 2023 00:30:52 +0100
Subject: [PATCH] Add smart window switching

---
 .tmux.conf | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/.tmux.conf b/.tmux.conf
index efafa31..6f3bb8a 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -12,17 +12,26 @@ unbind %
 # reload config file (change file location to your the tmux.conf you want to use)
 bind r source-file ~/.tmux.conf \; display 'Reloaded tmux config!'
 
+# Smart pane switching with awareness of Vim splits.
+# See: https://github.com/christoomey/vim-tmux-navigator
+is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
+    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
+bind-key -n 'M-h' if-shell "$is_vim" 'send-keys M-h' 'select-pane -L'
+bind-key -n 'M-j' if-shell "$is_vim" 'send-keys M-j' 'select-pane -D'
+bind-key -n 'M-k' if-shell "$is_vim" 'send-keys M-k' 'select-pane -U'
+bind-key -n 'M-l' if-shell "$is_vim" 'send-keys M-l' 'select-pane -R'
+tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
+if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
+    "bind-key -n 'M-\\' if-shell \"$is_vim\" 'send-keys M-\\'  'select-pane -l'"
+if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
+    "bind-key -n 'M-\\' if-shell \"$is_vim\" 'send-keys M-\\\\'  'select-pane -l'"
 
-
-# switch panes using Alt-arrow without prefix
-set -s escape-time 0 # Disable esc=alt
-bind -n M-h select-pane -L
-bind -n M-l select-pane -R
-bind -n M-j select-pane -U
-bind -n M-k select-pane -D
-
-# Enable mouse control (clickable windows, panes, resizable panes)
-set -g mouse on
+bind-key -T copy-mode-vi 'C-h' select-pane -L
+bind-key -T copy-mode-vi 'C-j' select-pane -D
+bind-key -T copy-mode-vi 'C-k' select-pane -U
+bind-key -T copy-mode-vi 'C-l' select-pane -R
+bind-key -T copy-mode-vi 'C-\' select-pane -l
+bind-key -T copy-mode-vi 'C-Space' select-pane -t:.+
 
 # Don't rename windows automatically
 set-option -g allow-rename off