tmux.conf

# Basics {{{
# Default shell {{{
# take zsh if it's your shell
#set -g default-shell $SHELL
set -g default-shell /usr/local/bin/zsh


# }}}
# Centering the windows list {{{

set -g status-justify centre

# }}}
# Mouse {{{

setw -g mouse on

# }}}
# Renumber windows when one is closed {{{

set -g renumber-windows on

# }}}
# No automatic title {{{

setw -g automatic-rename off

# }}}
# Enable numbering for windows + panes {{{

set -g base-index 1       # windows start with index 1
setw -g pane-base-index 1 # panes also start with index 1

# }}}
# Response time for commands {{{

set -sg escape-time 1

# }}}
# Prefix remap to <Ctrl-a>{{{

unbind C-b           # the old Prefix mapping is gone, we can use it for a new command
bind C-a send-prefix # Prefix a twice will send the command throughout tmux to other programs
set -g prefix C-a    # remap of Prefix (-g says it's global to all sessions)

# }}}
# Enable vi for buffer editing {{{

setw -g mode-keys vi

# }}}
# Identifying activity in other windows {{{

setw -g monitor-activity on
set -g visual-activity on

# }}}
# Enable PageUp and PageDown keys for scrolling {{{

bind-key -T root PPage if-shell -F "#{alternate_on}" "send-keys PPage" "copy-mode -e; send-keys PPage"

# }}}
# }}}
# Mappings {{{
# Smart pane switching with awareness of vim splits {{{
# See: https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h'  'select-pane -L'
bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j'  'select-pane -D'
bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k'  'select-pane -U'
bind-key -n 'C-l' if-shell "$is_vim" 'send-keys C-l'  'select-pane -R'
tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\'  'select-pane -l'"

bind-key -T copy-mode-vi 'C-h' select-pane -L
bind-key -T copy-mode-vi 'C-j' select-pane -D
bind-key -T copy-mode-vi 'C-k' select-pane -U
bind-key -T copy-mode-vi 'C-l' select-pane -R
bind-key -T copy-mode-vi 'C-\' select-pane -l

# }}}
# `H,J,K,L` ... resizing panes (tmux style) {{{
# the -r options let's repeat the Prefix key only once and the defined key within a repeat time (500ms)

bind -r H resize-pane -L 5
bind -r J resize-pane -D 5
bind -r K resize-pane -U 5
bind -r L resize-pane -R 5

# }}}
# `Prefix-S choose which tmux session you want to use {{{

bind S choose-session

# }}}
# `Prefix s, Prefix v` ... horizontal/vertical split (window splitting the Vim way)  {{{

bind v split-window -h
bind s split-window -v

# }}}
# `Prefix-C-a` ... switch between two latest windows in tmux  {{{

bind-key C-a last-window

# }}}
# `Prefix Space` ... go into copy mode  {{{

bind Space copy-mode

# }}}
# In Copy-mode press v to start word wise selection {{{

# in tmux 2.3 bind-key -t vi-copy 'v' begin-selection
bind-key -Tcopy-mode-vi 'v' send -X begin-selection

# }}}
# }}}
# Windows and panes styles {{{
# White text on dark background for status messages {{{

set -g status-style bg=black,fg=white
set -g window-status-activity-style bold

# }}}
# Active window is red and the other are cyan {{{

setw -g window-status-style bg=default,fg=cyan,dim

setw -g window-status-current-style bg=red,fg=white,bright

# }}}
# Tmux command and status line customizations {{{

set -g message-style bg=colour221,fg=colour16,bold

# }}}
# }}}
# Status bar {{{
# Position and elements {{{
# actual left-status: Session <number> <Windows-Index> <Pane-Index>
# actual right-status: <day> <month> <time>

set -g status-left-length 40
set -g status-left "#[fg=green]#S #[fg=yellow]#I #[fg=cyan]#P#[fg=green]"

set -g status-right "#{battery_icon} #{battery_percentage} #{battery_remain} #[fg=cyan]%d %b %R"

# }}}
# Active window is red and the other are cyan {{{

setw -g window-status-style bg=default,fg=cyan,dim

setw -g window-status-current-style bg=red,fg=white,bright

# }}}
# }}}

# tpm
# <Prefix-I> ... install tpm and all plugins
# <Prefix-U> ... update plugins
set -g @plugin 'tmux-plugins/tpm'

# common tmux settings
set -g @plugin 'tmux-plugins/tmux-sensible'

# automatic restoring and continuous saving
# `Prefix-Ctrl-s` to save session, `Prefix-Ctrl-l` load sessions
# set -g @plugin 'tmux-plugins/tmux-resurrect'
# set -g @plugin 'tmux-plugins/tmux-continuum'
# Last saved environment is automatically restored when tmux is started.
set -g @continuum-restore 'on'

# y ... yank the selection to clipboard, Y ... copy and paste into command line (put)
set -g @plugin 'tmux-plugins/tmux-yank'

# `Prefx u` will list URLs in extra buffer
set -g @plugin 'tmux-plugins/tmux-urlview'

# `Prefix o` in copy mode press to open  pdfs, mp3, urls, files ...
set -g @plugin 'tmux-plugins/tmux-open'

# `Prefix a` start pomodoro, `Prefix A` stop a pomodoro
set -g @plugin 'swaroopch/tmux-pomodoro'

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
run '~/.tmux/plugins/tpm/tpm'