modularisation term_title

bash/term_title

@@ -0,0 +1,28 @@
+# Tell the terminal about the working directory at each prompt.
+if [ "$TERM_PROGRAM" == "Apple_Terminal" ] && [ -z "$INSIDE_EMACS" ]; then
+    update_terminal_cwd() {
+        # Identify the directory using a "file:" scheme URL,
+        # including the host name to disambiguate local vs.
+        # remote connections. Percent-escape spaces.
+        local SEARCH=' '
+        local REPLACE='%20'
+        local PWD_URL="file://$HOSTNAME${PWD//$SEARCH/$REPLACE}"
+        printf '\e]7;%s\a' "$PWD_URL"
+    }
+    PROMPT_COMMAND="update_terminal_cwd; $PROMPT_COMMAND"
+fi
+
+set_term_title() {
+    case $TERM in
+     xterm*|rxvt*)
+         local title="\033]2;$USER@${HOSTNAME%%.*}:${PWD/#$HOME/~}\a"
+         ;;
+     *)
+         local title=""
+         ;;
+    esac
+    printf "$title"
+}
+PROMPT_COMMAND="set_term_title; $PROMPT_COMMAND"
+
+# vim: ft=sh