Add case in .zshrc for dumb terminals

.zshrc

@@ -1,3 +1,14 @@
+if [[ $TERM == "dumb" ]]; then	# in emacs
+    PS1='%(?..[%?])%!:%~%# '
+    # for tramp to not hang, need the following. cf:
+    # http://www.emacswiki.org/emacs/TrampMode
+    unsetopt zle
+    unsetopt prompt_cr
+    unsetopt prompt_subst
+    unfunction precmd
+    unfunction preexec
+else
+
     if [ ! -d $HOME/antigen ]; then
         git clone https://github.com/zsh-users/antigen.git $HOME/antigen
     fi
@@ -26,6 +37,7 @@ antigen-theme kphoen
     antigen-apply
 
     unsetopt correct_all
+fi
 
 export PATH=$HOME/bin:$PATH
 export EDITOR="emacsclient"