update prezto

.zprezto/modules/prompt/external/agnoster/agnoster.zsh-theme

@@ -22,6 +22,17 @@
 # jobs are running in this shell will all be displayed automatically when
 # appropriate.
 
+### Segments of the prompt, default order declaration
+
+typeset -aHg AGNOSTER_PROMPT_SEGMENTS=(
+    prompt_status
+    prompt_context
+    prompt_virtualenv
+    prompt_dir
+    prompt_git
+    prompt_end
+)
+
 ### Segment drawing
 # A few utility functions to make it easy and re-usable to draw segmented prompts
 
@@ -135,12 +146,9 @@ prompt_virtualenv() {
 prompt_agnoster_main() {
   RETVAL=$?
   CURRENT_BG='NONE'
-  prompt_status
-  prompt_context
-  prompt_virtualenv
-  prompt_dir
-  prompt_git
-  prompt_end
+  for prompt_segment in "${AGNOSTER_PROMPT_SEGMENTS[@]}"; do
+    [[ -n $prompt_segment ]] && $prompt_segment
+  done
 }
 
 prompt_agnoster_precmd() {