Added tmux.conf

tmux/.tmux.conf

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+# ==========================
+# ===  General settings  ===
+# ==========================
+set -g default-terminal "screen-256color"
+
+# Change prefix key to C-a, easier to type, same to "screen"
+unbind C-b
+set -g prefix C-a
+
+# Set parent terminal title to reflect current window in tmux session 
+set -g set-titles on
+set -g set-titles-string "#I:#W"
+
+# Start index of window/pane with 1, because we're humans, not computers
+set -g base-index 1
+setw -g pane-base-index 1
+
+# Enable mouse support
+set -g mouse on
+
+# ================================================
+# ===     Copy mode, scroll and clipboard      ===
+# ================================================
+set -g @copy_use_osc52_fallback on
+
+# Prefer vi style key table
+setw -g mode-keys vi
+
+bind p paste-buffer
+bind C-p choose-buffer
+
+# trigger copy mode by
+bind -n M-Up copy-mode
+
+# Scroll up/down by 1 line, half screen, whole screen
+bind -T copy-mode-vi M-Up              send-keys -X scroll-up
+bind -T copy-mode-vi M-Down            send-keys -X scroll-down
+bind -T copy-mode-vi M-PageUp          send-keys -X halfpage-up
+bind -T copy-mode-vi M-PageDown        send-keys -X halfpage-down
+bind -T copy-mode-vi PageDown          send-keys -X page-down
+bind -T copy-mode-vi PageUp            send-keys -X page-up
+
+# When scrolling with mouse wheel, reduce number of scrolled rows per tick to "2" (default is 5)
+bind -T copy-mode-vi WheelUpPane       select-pane \; send-keys -X -N 2 scroll-up
+bind -T copy-mode-vi WheelDownPane     select-pane \; send-keys -X -N 2 scroll-down
+
+# wrap default shell in reattach-to-user-namespace if available
+# there is some hack with `exec & reattach`, credits to "https://github.com/gpakosz/.tmux"
+# don't really understand how it works, but at least window are not renamed to "reattach-to-user-namespace"
+if -b "command -v reattach-to-user-namespace > /dev/null 2>&1" \
+    "run 'tmux set -g default-command \"exec $(tmux show -gv default-shell) 2>/dev/null & reattach-to-user-namespace -l $(tmux show -gv default-shell)\"'"
+
+yank="~/.tmux/yank.sh"
+
+# Copy selected text
+bind -T copy-mode-vi Enter send-keys -X copy-pipe-and-cancel "$yank"
+bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "$yank"
+bind -T copy-mode-vi Y send-keys -X copy-line \;\
+    run "tmux save-buffer - | $yank"
+bind-key -T copy-mode-vi D send-keys -X copy-end-of-line \;\
+    run "tmux save-buffer - | $yank"
+bind -T copy-mode-vi C-j send-keys -X copy-pipe-and-cancel "$yank"
+bind-key -T copy-mode-vi A send-keys -X append-selection-and-cancel \;\
+    run "tmux save-buffer - | $yank"
+
+# Copy selection on drag end event, but do not cancel copy mode and do not clear selection
+# clear select on subsequence mouse click
+bind -T copy-mode-vi MouseDragEnd1Pane \
+    send-keys -X copy-pipe "$yank"
+bind -T copy-mode-vi MouseDown1Pane select-pane \;\
+   send-keys -X clear-selection
+    
+# iTerm2 works with clipboard out of the box, set-clipboard already set to "external"
+# tmux show-options -g -s set-clipboard
+# set-clipboard on|external