~/.tmux.conf (tmux >= 2.1)

.tmux.conf

       # Copyright 2012 Cirrus Minor. All rights reserved.
    #
    # Redistribution and use in source and binary forms, with or without modification, are
    # permitted provided that the following conditions are met:
    #
    #    1. Redistributions of source code must retain the above copyright notice, this list of
    #       conditions and the following disclaimer.
    #    2. Redistributions in binary form must reproduce the above copyright notice, this list
    #             of conditions and the following disclaimer in the documentation and/or other materials
    #        provided with the distribution.
    #
    # THIS SOFTWARE IS PROVIDED BY Cirrus Minor ''AS IS'' AND ANY EXPRESS OR IMPLIED
    #       WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
    # FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Cirrus Minor OR
    # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
    # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
    # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    # All the following colours are supported: black, red, green, yellow, blue, magenta, cyan, white, default, bright, bold, dim, 
    # The views and conclusions contained in the software and documentation are those of the
    # authors and should not be interpreted as representing official policies, either expressed
    # or implied, by Cirrus Minor.

    ################
    ## .tmux.conf ##
    #unbind C-b
    set -g prefix C-a


    # generalized startup stuff
    set -g default-command zsh 
    set -g default-terminal screen-256color
    set -g remain-on-exit on
    set -g base-index 1    
    #set -g default-command "${SHELL}"
    

    # Use urlview for displaying all links from buffer
    #bind-key u capture-pane -J \; save-buffer /tmp/tmux-buffer \; split-window -l 10 "urlview '/tmp/tmux-buffer' && rm /tmp/tmux-buffer"
    
    # Mouse (tmux >= 2.1)
    #-------------------------------------------------

    # Allows scrolling and selecting in copy-mode
    #set -g mouse-utf8 on
    set -g  mouse on
    set -ga terminal-overrides ',xterm*:smcup@:rmcup@'
    set -ga terminal-override ',rxvt-uni*:XT:Ms=\E]52;%p1%s;%p2%s\007'
    set -g history-limit 30000

    # Enable mouse copy-mode scrolling
    bind-key -T root WheelUpPane   if-shell -F -t = "#{alternate_on}" "send-keys -M" "select-pane -t =; copy-mode -e; send-keys -M"
    bind-key -T root WheelDownPane if-shell -F -t = "#{alternate_on}" "send-keys -M" "select-pane -t =; send-keys -M"

    # Enable fast scrolling with Ctrl
    #bind-key -T root C-WheelUpPane if-shell -F -t = "#{alternate_on}" "send-keys -M" "select-pane -t =; copy-mode -e; send-keys -M"
    #bind-key -t vi-copy C-WheelUpPane   halfpage-up
    #bind-key -t vi-copy C-WheelDownPane halfpage-down

    # Make mouse-drag work only with Ctrl
    #unbind -T root MouseDrag1Pane
    #unbind -t vi-copy MouseDrag1Pane
    #bind-key -n C-MouseDrag1Pane if -Ft= '#{mouse_any_flag}' 'if -Ft= \"#{pane_in_mode}\" \"copy-mode -M\" \"send-keys -M\"' 'copy-mode -M'
    #bind-key -t vi-copy C-MouseDrag1Pane begin-selection

    # Toggle mouse on/off
    #bind-key m set-option -g mouse on \; display 'Mouse: ON'
    #bind-key M set-option -g mouse off \; display 'Mouse: OFF'
 

    # Statusbar properties
    set -g display-time 5000
    set -g status-bg default
    set -g status-fg black
    #set -g window-status-current-format "#[bg=blue,fg=black] Session #S ❮|:#W|#h:#T|❯ "

    # pane divider color; non active pane
    set -g pane-border-fg colour244
    set -g pane-border-bg default

     # pane divider color; active pane
    # helps when you have more than two panes.
    set -g pane-active-border-fg colour166
    set -g pane-active-border-bg default
       

    # window notifications; display activity on other window
    #set -g monitor-activity on
    #set -g visual-activity on
    set-window-option -g monitor-activity on
    set-window-option -g monitor-silence 60

    # statusbar colors
    set -g status-fg white
    set -g status-bg default
    set -g status-attr default
     
    # window title colors; non active
    set -g window-status-fg blue
    set -g window-status-bg default
    set -g window-status-attr dim
     
    # window title colors; active
    set -g window-status-current-fg colour38
    set -g window-status-current-bg default
    #set -g window-status-current-attr bright
    
            
    # urlscan as context and url view
    bind-key u capture-pane \; save-buffer /tmp/tmux-buffer \; \
    new-window -n "urlscan" '$SHELL -c "urlscan  < /tmp/tmux-buffer"'
  
    # urlview as context and url view
    bind-key U capture-pane \; save-buffer /tmp/tmux-buffer \; \
    new-window -n "urlview" '$SHELL -c "urlview  < /tmp/tmux-buffer"'
    
    # Titles
    set -g set-titles on
    #set -g set-titles-string "#T"
    set -g status-justify centre
    set -g automatic-rename off

    #tmux messages
    set -g message-bg default
    set -g message-fg yellow
    
    #statusbar external scripts
    set -g status on
    #set -g status-interval 2
    #set -g status-utf8 on
    set -g status-left-length 200
    set -g status-right-length 180
    #set -g status-left '#(rainbarf)'
    set -g status-left " #(~/tmux-powerline/powerline.sh left)"
    #set  -g status-left "#[fg=blue]Session: #[fg=red]#S #[fg=white]#I #[fg=green]#P"
    #set -g status-right "#(~/tmux-powerline/powerline.sh right)"
    set -g status-right "#[fg=blue]#(cat  /home/cirrus/.cache/i3blocks/notification  | grep BODY | cut -c 6-) #[bg=default,fg=red]◀ %H:%M "