unbind C-b
set-option -g prefix ^A
bind a send-prefix

# Bind appropriate commands similar to screen.
# lockscreen ^X x
unbind ^X
bind ^X lock-server
unbind x
bind x lock-server

# screen ^C c
unbind ^C
bind ^C new-window
unbind c
bind c new-window

# detach ^D d
unbind ^D
bind ^D detach

# displays *
unbind *
bind * list-clients

# next ^@ ^N sp n
unbind ^@
bind ^@ next-window
unbind ^N
bind ^N next-window
unbind " "
bind " " next-window
unbind n
bind n next-window

# title A
unbind A
bind A command-prompt "rename-window %%"

# other ^A
unbind ^A
bind ^A last-window

# prev ^H ^P p ^?
unbind ^H
bind ^H previous-window
unbind ^P
bind ^P previous-window
unbind p
bind p previous-window
unbind BSpace
bind BSpace previous-window

# windows ^W w
unbind ^W
bind ^W list-windows
unbind w
bind w list-windows

# kill K k
unbind K
bind K confirm-before "kill-window"
unbind k
bind k confirm-before "kill-window"

# redisplay ^L l
unbind ^L
bind ^L refresh-client
unbind l
bind l refresh-client

# " windowlist -b
unbind '"'
bind '"' choose-window

# use Escape for entering copy mode, like screen
bind Escape copy-mode

# less time between commands in a command sequence
set -s escape-time 0

# use vi-style key bindings
set-option -g mode-keys vi

# start numbering windows a 1
set -g base-index 1

# Rather than constraining window size to the maximum size of any client
# connected to the *session*, constrain window size to the maximum size
# of any client connected to *that window*. Much more reasonable.
set-window-option -g aggressive-resize on

# the visual bell causes a micro delay when typing. Tab completion triggers
# the bell and typing halts for a second and it's really annoying.
set-option -g visual-bell off

# status bar
set-option -g status-justify left
set-option -g status-left ''
set-option -g status-right '#[fg=colour47]#H #[fg=red]#(cut -d " " -f 1-3 /proc/loadavg) #[fg=colour227]%Y-%m-%d %H:%M#[default]'

# scrollback buffer
set-option -g history-limit 4096

# 2022-11-26: According to the tmux FAQ, inside tmux TERM must be "screen",
# "tmux" or similar (such as "tmux-256color"). As of CentOS Stream 8, now
# all my systems support this (check with `infocmp tmux-256color`).
#
# See: https://github.com/tmux/tmux/wiki/FAQ#how-do-i-use-a-256-colour-terminal
set-option -g default-terminal "tmux-256color"

# 2022-11-26: Tell Tmux that the outside terminal supports true color. I
# need to use the tmux-specific extension "Tc" for now until all my hosts
# are on tmux 3.2+.
#
# See: https://github.com/tmux/tmux/wiki/FAQ#how-do-i-use-rgb-colour
# See: https://jdhao.github.io/2018/10/19/tmux_nvim_true_color/
set -as terminal-overrides ",*-256color*:Tc"

#### COLOUR (Solarized dark)

# default statusbar colors
set-option -g status-style "bg=black fg=yellow default"

# default window title colors
set-window-option -g window-status-style "fg=brightblue bg=default"

# active window title colors
set-window-option -g window-status-current-style "fg=brightred bg=default"

# pane border
set-option -g pane-border-style "fg=black"
set-option -g pane-active-border-style "fg=brightgreen"

# message text
set-option -g message-style "bg=black fg=brightred"

# pane number display
set-option -g display-panes-active-colour blue #blue
set-option -g display-panes-colour brightred #orange

# clock
set-window-option -g clock-mode-colour green #green