Fix unknown key split-window (#4)

closes #3

tmux/.tmux.conf

@@ -49,10 +49,10 @@ set -g visual-activity off
 # 调节窗口大小快捷键
 # bind -r 表示可以重复
 # 注意这里时大写，需要按住 Shift + HJKL
-bind -r H resize-pane -L 5
+bind-key -r H resize-pane -L 5
-bind -r J resize-pane -D 5
+bind-key -r J resize-pane -D 5
-bind -r K resize-pane -U 5
+bind-key -r K resize-pane -U 5
-bind -r L resize-pane -R 5
+bind-key -r L resize-pane -R 5
 
 # move between panels using hjkl like in vim up
 #bind-key k select-pane -U
@@ -71,11 +71,11 @@ bind -r L resize-pane -R 5
 # bind -n M-Up select-pane -U
 # bind -n M-Down select-pane -D
 
-# split panes using | and -
+# split panes using | and - or shift \ and shift -
-bind \ split-window -h -c "#{pane_current_path}"
+bind-key "\\" split-window -h -c "#{pane_current_path}"
-bind | split-window -h -c "#{pane_current_path}"
+bind-key "\|" split-window -h -c "#{pane_current_path}"
-bind - split-window -v -c "#{pane_current_path}"
+bind-key "-" split-window -v -c "#{pane_current_path}"
-bind _ split-window -v -c "#{pane_current_path}"
+bind-key "_" split-window -v -c "#{pane_current_path}"
 unbind '"'
 unbind %
 
@@ -163,7 +163,7 @@ set -g @plugin 'tmux-plugins/tmux-sensible'
 set -g @plugin 'tmux-plugins/tmux-yank'
 set -g @plugin 'tmux-plugins/tmux-open'
 set -g @plugin 'christoomey/vim-tmux-navigator'
-set -g @plugin 'tmux-plugins/tmux-resurrect' 
+set -g @plugin 'tmux-plugins/tmux-resurrect'
 
 # Other examples:
 # set -g @plugin 'github_username/plugin_name'