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My Tmux config
Time: 01/10/20 9:23:56 pm
Tags: config, Tmux, screen [1], Bash [3], Cygwin [7]
Most relevent 4 of 10 posts with shared tags:

Tmux is a great alternative to gnu screen. I can’t believe I’ve never posted my custom Tmux config for Cygwin after all the work I put into it years ago. So here it is. Its features include:

  • Uses ctrl+a, like gnu screen, instead of ctrl+b
  • Mouse interaction is enabled
  • Tab bar/windows:
    • Current tab is highlighted in cyan
    • Cycle through tabbed windows with a click on its tab or ctrl+arrowkeys
    • Reorder tabbed windows with a drag of its tab or alt+arrowkeys
    • ctrl+a,/ to rename a tab on the tab bar
    • Create new window with ctrl+a,c
  • Panes
    • Create split panes with vertical=ctrl+a,| and horizontal=ctrl+a,-
    • Move around panes with click or ctrl+shift+arrowkeys
    • Resize panes by dragging on the separator bar or use ctrl+shift+alt+arrowkeys
    • Panes automatically resize to fit OS window
  • Clipboard/highlighting
    • Copy text to clipboard by highlighting it. Had to use a minor hack to fix a cygwin selection problem
    • Paste from clipboard with right click
    • Middle mouse button+drag starts copy mode
      • When in copy mode, u runs the selection as a command in a separate window (Instead of “cygstart” for cygwin, use “xdg-open” for linux, or “open” for MacOS X)
    • Double click selects word
    • Double middle click runs the word under the mouse as a command
  • Start the session on the current bash directory
  • Escape time is lowered for quicker response to scroll buffer access (ctrl+a,pageup)

To use this, save the file to ~/.tmux.conf

#Set current directory setting for cygwin
set-environment -g CHERE_INVOKING 1

#Mouse interaction
set -g mouse on

#Lower escape timing from 500ms to 50ms for quicker response to scroll-buffer access
set -s escape-time 50

#Window always takes up largest possible max size
set-window-option -g aggressive-resize

#Highlight active window in tab-bar at bottom in cyan
set-window-option -g window-status-current-bg cyan

#Reorder windows in status bar by drag & drop
bind-key -n MouseDrag1Status swap-window -t=

#Copy to clipboard on text selection in cygwin. Move cursor position 1 to the right before copy to bypass a bug
bind -Tcopy-mode MouseDragEnd1Pane send-keys -X cursor-right\; send -X copy-selection-and-cancel\; run-shell -b "tmux show-buffer > /dev/clipboard"

#Paste from clipboard with right click in cygwin
bind-key -n MouseDown3Pane run-shell 'tmux set-buffer -b winclip "$(cat /dev/clipboard)"'\; paste-buffer -db winclip

#Middle drag starts copy mode
bind -n MouseDrag2Pane copy-mode -M

#When in copy mode, "u" runs the selection as a command in a separate window (Instead of "cygstart" for cygwin, use "xdg-open" for linux, or "open" for MacOS X)
bind -Tcopy-mode u send -X copy-selection-and-cancel\; run-shell -b "tmux show-buffer | xargs cygstart"

#Double click selects word
bind-key -n DoubleClick1Pane copy-mode -M\; send-keys -X select-word

#Double middle click runs the word under the mouse as a command. See description for MouseDown3Pane above
bind-key -n DoubleClick2Pane copy-mode -M\; send-keys -X select-word\; send -X copy-selection-and-cancel\; run-shell -b "tmux show-buffer | xargs cygstart"

#Remap prefix to Control+a
set -g prefix C-a
unbind C-b
#bind 'C-a C-a' to type 'C-a'
bind C-a send-prefix

#Start in CWD when creating or splitting tabs; move the splitting planes keys to | and -
bind '|' split-window -h -c '#{pane_current_path}'  # Split panes horizontal
bind '-' split-window -v -c '#{pane_current_path}'  # Split panes vertically
bind c new-window -c '#{pane_current_path}' # Create new window
unbind '"'
unbind %

#prefix, / -- Renames window, but starts blank
bind-key / command-prompt "rename-window '%%'"

#Select next/prev window with Ctrl+(Left|Right)
bind-key -n C-Right next-window
bind-key -n C-Left previous-window

#Reorder window with Alt+(Left|Right)
bind-key -n M-Left swap-window -t -1
bind-key -n M-Right swap-window -t +1

#Switch panes using Ctrl+Shift+arrow
bind -n C-S-Left select-pane -L
bind -n C-S-Right select-pane -R
bind -n C-S-Up select-pane -U
bind -n C-S-Down select-pane -D

#Resize panes using Ctrl+Shift+Alt+arrow
bind-key -n C-S-M-Up resize-pane -U 1
bind-key -n C-S-M-Down resize-pane -D 1
bind-key -n C-S-M-Left resize-pane -L 1
bind-key -n C-S-M-Right resize-pane -R 1

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