tmux.conf

# Increase scrollback buffer size from 2000 to 50000 lines
set -g history-limit 50000

# Enable mouse scrolling
set -g mouse on

# Enable focus events
set -g focus-events on

# Enable true color support
set -g default-terminal "tmux-256color"
set -sa terminal-overrides ",*:RGB"

# Clipboard via OSC 52, so copies reach the local machine over SSH
set -s set-clipboard on

# copy mode vim motions
set-window-option -g mode-keys vi

# Inactive pane background/foreground
set -g window-style 'fg=terminal,bg=brightblack'

# Active pane background/foreground
set -g window-active-style 'fg=terminal,bg=terminal'

# moving between panes with vim movement keys
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# resize the pane
bind-key -r J resize-pane -D 3
bind-key -r K resize-pane -U 3
bind-key -r H resize-pane -L 3
bind-key -r L resize-pane -R 3

# Setup 'v' to begin selection as in Vim
bind-key -T copy-mode-vi v send-keys -X begin-selection

# No pipe target: the selection goes to a tmux buffer and, because set-clipboard
# is on, out to the terminal via OSC 52. tmux never shells out to a clipboard
# tool, so on a terminal that drops OSC 52 only the tmux buffer gets set.
bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel
bind-key -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe-and-cancel

# Re-bind through a local clipboard tool when the host has one. A pipe target
# does not suppress OSC 52, so this is purely additive: it rescues terminals
# that discard OSC 52 (Terminal.app, older VTE) while leaving SSH unaffected.
# First match wins, so list most-specific first.
run-shell 'for c in pbcopy clip.exe wl-copy "xsel -ib" "xclip -selection clipboard"; do \
             command -v "${c%% *}" >/dev/null 2>&1 || continue; \
             tmux bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "$c"; \
             tmux bind-key -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe-and-cancel "$c"; \
             break; \
           done'

# Split panes and windows in the same directory
bind '"' split-window -v -c "#{pane_current_path}"
bind % split-window -h -c "#{pane_current_path}"
bind c new-window -c "#{pane_current_path}"

# Plugins (TPM)
set -g @plugin 'tmux-plugins/tpm'

# Initialize TPM - keep this line at the very bottom
run '~/.tmux/plugins/tpm/tpm'