set -g prefix C-a
unbind-key C-b
bind-key C-a send-prefix

# Start windows and panes at 1, not 0
set -g base-index 1
setw -g pane-base-index 1
setw -g mode-keys vi

# Shift arrow to switch windows
bind -n S-Left  previous-window
bind -n S-Right next-window

# Use Alt-vim keys without prefix key to switch panes
bind -n M-h select-pane -L
bind -n M-j select-pane -D
bind -n M-k select-pane -U
bind -n M-l select-pane -R

# Use Alt-arrow keys without prefix key to switch panes
bind -n M-Left select-pane -L
bind -n M-Right select-pane -R
bind -n M-Up select-pane -U
bind -n M-Down select-pane -D