eterm: Populate some magic eterm variables

With these variables set Emacs will magically traverse the remote SSH
connections to open files using TRAMP.

This is explained here:

http://www.emacswiki.org/emacs/AnsiTermHints#toc5

functions

@@ -145,3 +145,11 @@ set_go_path() {
 source_if_exists() {
     [ -f $1 ] && source $1
 }
+
+function set-eterm-dir {
+    # Sets up some eterm variables so TRAMP  works
+    # Adapted from: http://www.emacswiki.org/emacs/AnsiTermHints#toc5
+    echo -e "\033AnSiTu" "$LOGNAME"
+    echo -e "\033AnSiTc" "$(pwd)"
+    echo -e "\033AnSiTh" "$(hostname)"
+}

zshrc

@@ -118,6 +118,12 @@ precmd() {
     fi
 
     set_title
+
+    # We only want eterm magic with the right terminal and on a remote
+    # connection
+    if [ "$TERM" = "eterm-color" ] && [[ -n "$SSH_CONNECTION" ]]; then
+        set-eterm-dir
+    fi
 }
 
 set_title() {