Added yank script

yank.sh

@@ -0,0 +1,68 @@
+#!/usr/bin/env bash
+
+set -eu
+
+is_app_installed() {
+  type "$1" &>/dev/null
+}
+
+# get data either form stdin or from file
+buf=$(cat "$@")
+
+copy_backend_remote_tunnel_port=$(tmux show-option -gvq "@copy_backend_remote_tunnel_port")
+copy_use_osc52_fallback=$(tmux show-option -gvq "@copy_use_osc52_fallback")
+
+# Resolve copy backend: pbcopy (OSX), reattach-to-user-namespace (OSX), xclip/xsel (Linux)
+copy_backend=""
+if is_app_installed pbcopy; then
+  copy_backend="pbcopy"
+elif is_app_installed reattach-to-user-namespace; then
+  copy_backend="reattach-to-user-namespace pbcopy"
+elif [ -n "${DISPLAY-}" ] && is_app_installed xsel; then
+  copy_backend="xsel -i --clipboard"
+elif [ -n "${DISPLAY-}" ] && is_app_installed xclip; then
+  copy_backend="xclip -i -f -selection primary | xclip -i -selection clipboard"
+elif [ -n "${copy_backend_remote_tunnel_port-}" ] \
+    && (netstat -f inet -nl 2>/dev/null || netstat -4 -nl 2>/dev/null) \
+      | grep -q "[.:]$copy_backend_remote_tunnel_port"; then
+  copy_backend="nc localhost $copy_backend_remote_tunnel_port"
+fi
+
+# if copy backend is resolved, copy and exit
+if [ -n "$copy_backend" ]; then
+  printf "%s" "$buf" | eval "$copy_backend"
+  exit;
+fi
+
+
+# If no copy backends were eligible, decide to fallback to OSC 52 escape sequences
+# Note, most terminals do not handle OSC
+if [ "$copy_use_osc52_fallback" == "off" ]; then
+  exit;
+fi
+
+# Copy via OSC 52 ANSI escape sequence to controlling terminal
+buflen=$( printf %s "$buf" | wc -c )
+
+# https://sunaku.github.io/tmux-yank-osc52.html
+# The maximum length of an OSC 52 escape sequence is 100_000 bytes, of which
+# 7 bytes are occupied by a "\033]52;c;" header, 1 byte by a "\a" footer, and
+# 99_992 bytes by the base64-encoded result of 74_994 bytes of copyable text
+maxlen=74994 
+
+# warn if exceeds maxlen
+if [ "$buflen" -gt "$maxlen" ]; then
+  printf "input is %d bytes too long" "$(( buflen - maxlen ))" >&2
+fi
+
+# build up OSC 52 ANSI escape sequence
+esc="\033]52;c;$( printf %s "$buf" | head -c $maxlen | base64 | tr -d '\r\n' )\a"
+esc="\033Ptmux;\033$esc\033\\"
+
+# resolve target terminal to send escape sequence
+# if we are on remote machine, send directly to SSH_TTY to transport escape sequence
+# to terminal on local machine, so data lands in clipboard on our local machine
+pane_active_tty=$(tmux list-panes -F "#{pane_active} #{pane_tty}" | awk '$1=="1" { print $2 }')
+target_tty="${SSH_TTY:-$pane_active_tty}"
+
+printf "$esc" > "$target_tty"