Adding `ssh` segment back with some minor changes.

README.md

@@ -102,7 +102,7 @@ The segments that are currently available are:
 * `swap` - Prints the current swap size.
 * [`time`](#time) - System time.
 * [`vi_mode`](#vi_mode)- Your prompt's Vi editing mode (NORMAL|INSERT).
-* `SSH` - Additional Identifier for SSH Sessions.
+* `ssh` - Indicates whether or not you are in an SSH session.
 
 **Development Environment Segments:**
 * [`vcs`](#vcs) - Information about this `git` or `hg` repository (if you are in one).

functions/icons.zsh

@@ -79,6 +79,7 @@ case $POWERLEVEL9K_MODE in
       SWIFT_ICON                     ''
       PUBLIC_IP_ICON                 ''
       LOCK_ICON                      $'\UE138'              # 
+      SSH_ICON                       '(ssh)'
     )
   ;;
   'awesome-fontconfig')
@@ -140,6 +141,7 @@ case $POWERLEVEL9K_MODE in
       SWIFT_ICON                     ''
       PUBLIC_IP_ICON                 ''
       LOCK_ICON                      $'\UE138'              # 
+      SSH_ICON                       '(ssh)'
     )
   ;;
   *)
@@ -201,6 +203,7 @@ case $POWERLEVEL9K_MODE in
       SWIFT_ICON                     'Swift'
       PUBLIC_IP_ICON                 ''
       LOCK_ICON                      $'\UE0A2'
+      SSH_ICON                       '(ssh)'
     )
   ;;
 esac

powerlevel9k.zsh-theme

@@ -933,6 +933,12 @@ prompt_rvm() {
   fi
 }
 
+prompt_ssh() {
+  if [[ -n "$SSH_CLIENT" ]] || [[ -n "$SSH_TTY" ]]; then
+    "$1_prompt_segment" "$0" "$2" "$DEFAULT_COLOR" "yellow" "" 'SSH_ICON'
+  fi
+}
+
 # Status: return code if verbose, otherwise just an icon if an error occurred
 set_default POWERLEVEL9K_STATUS_VERBOSE true
 set_default POWERLEVEL9K_STATUS_OK_IN_NON_VERBOSE false