# Tmux has a habit of changing what these options are for each version, so this is a bit of a mess.

# Screen compatibility, change the command key.  And rebind the prefix sending command.
set-option -g prefix C-a
unbind-key C-b
bind-key C-a send-prefix

# r reloads the configuration, handy
bind r source-file ~/.tmux.conf

bind R clear-history

# More sane pane gain.  B-)
unbind %	# Remove default binding since we’re replacing them.
unbind '"'
bind | split-window -h
bind - split-window -v

# set-options -g global, -s server, -w window, otherwise a session option.
#   -a appends a string to the existing option.
#   -u unsets an option.
#   -o prevents setting an aption if it is already set.
#   -q shut up info messages.

# SESSION OPTIONS

set-option -g bell-action any
set-option -g bell-on-alert on

# Not actually documented what the limit is, but there is one.
set-option -g history-limit 100000

# All this mouse stuff is unreliable in UTF8 mode.  At least on roxterm.
# Also keep in mind the terminal specs mouse report limit of 256 characters, being less than my typical terminal width.
# Hmm, still wont pass mouse through like the docs say they will.
# Ah, mc needs "mc -x".  Though once again, watch that right edge on huge terminals.
# These three wont work under Ubuntu 16.04.
##set-option -g mouse-resize-pane on
##set-option -g mouse-select-pane on
##set-option -g mouse-select-window on
# This wont work under Ubuntu 16.04.
##set-option -g mode-mouse on		# on - mouse does copy mode stuff; copy-mode - mouse can't go into copy mode, but does stuff once in there; off - mouse is unmolested.
# Instead do this (also defaults to turning on the above three mouse things) -
set-option -g mouse on
# Or this.  sigh
#set-option -g mouse
##set-option -g mouse-utf8 off		# Defaults to on.

set-option -g set-remain-on-exit on

# How to set the title of the terminal window.
set-option -g set-titles on
set-option -g set-titles-string '#W'	# Default is "#S:#I:#W - "#T""

set-option -g status-interval 1		# Redraw status line every second, for the clock.
set-option -g status-justify centre	# Window list in the middle.
##set-option -g status-utf8 on

#  Character pair    Replaced with
   #(shell-command)  First line of the command's output
   #[attributes]     Colour or attribute change
   #H                Hostname of local host (not FDQN)
   #h                Hostname of local host without the domain name
   #F                Current window flag
   #I                Current window index
   #D                Current pane unique identifier
   #P                Current pane index
   #S                Session name
   #T                Current pane title
   #W                Current window name
   ##                A literal ‘#’

# Yes, my terminal really is bigger than 160 characters.
set-option -g status-left-length 42
#set-option -g status-left '[#H #S #F]'
set-option -g status-left '#H [#S:#I.#P]#F'
set-option -g status-right-length 64
set-option -g status-right "%F #(uptime | cut -d ' ' -f 2-2,10-)"	# %F is ISO date, uptime starts with the current time, and ends with the load average.  B-)

# Set window notifications
set-option -g visual-activity on	# Show status message for activity in monitor-activity windows.
#set-option -g visual-content on		# Show status message for content in monitor-content windows.  Based on a fnmatch(3) string.
set-option -g visual-silence on		# Show status message for silence in monitor-silence windows.  Based on a set interval.

set-option -gw alternate-screen off	# Don't save the original screen before starting tmux, may also allow use of the terminals original scrollback buffer.
set-option -gw clock-mode-style 24	# We are using the uptime clock anyway, so this is pointless.

# Highlight active window
set-option -gw window-status-current-bg red
set-option -gw window-status-current-format '[#I:#W]'
set-option -gw window-status-format '[#I:#W]#F'

# Set window notifications
set-option -gw monitor-activity on	# Bell on activity.

# We want 256 colours in our terminal.
set-option -g default-terminal "screen-256color"