Indicate inside Emacs

modules/prompt/functions/prompt_sorin_setup

@@ -73,7 +73,7 @@ function prompt_sorin_setup {
 
   # Define prompts.
   PROMPT='${SSH_TTY:+"%F{red}%n%f@%F{yellow}%m%f "}%F{cyan}${_prompt_sorin_pwd}%f${git_info:+${(e)git_info[prompt]}}%(!. %B%F{red}#%f%b.)${editor_info[keymap]} '
-  RPROMPT='${editor_info[overwrite]}%(?:: %F{red}⏎%f)${VIM:+" %B%F{green}V%f%b"}${git_info[rprompt]}'
+  RPROMPT='${editor_info[overwrite]}%(?:: %F{red}⏎%f)${VIM:+" %B%F{green}V%f%b"}${INSIDE_EMACS:+" %B%F{green}E%f%b"}${git_info[rprompt]}'
   SPROMPT='zsh: correct %F{red}%R%f to %F{green}%r%f [nyae]? '
 }