#change C-b to Ca
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix

# split panes using | and -
bind | split-window -h
bind - split-window -v
unbind '"'
unbind %

# stop tmux from renaming the window every time you run a command
set-option -g allow-rename off
set-option -g pane-active-border-fg blue

# select panes with vim keys
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# change base from 0 to 1 for reachability
set -g base-index 1

# set vi modes
set -g status-keys vi
set -g mode-keys vi

# enable mouse control (click wind, panes, resizable panes) - as of tmux 2.1
# copy/paste: shift+left click to highlight, then shift+middle to past
if-shell '[ $(echo "$(tmux -V | cut -d" " -f2) >= 2.1" | bc) -eq 1 ]' \
    'set -g mouse on' \
    'set -g mode-mouse on; set -g mouse-resize-pane on; set -g mouse-select-pane on; set -g mouse-select-window on' 

bind-key Tab last-window
bind-key BTab previous-window