Reworked command_execution_time segment

- Add a visual identifier
- Fix a bug that the time was not reset
- Make calculation independent of segment (thx @rjorgenson)

functions/icons.zsh

@@ -79,6 +79,7 @@ case $POWERLEVEL9K_MODE in
       SWIFT_ICON                     ''
       PUBLIC_IP_ICON                 ''
       LOCK_ICON                      $'\UE138'              # 
+      EXECUTION_TIME_ICON            $'\UE89C'              # 
     )
   ;;
   'awesome-fontconfig')
@@ -140,6 +141,7 @@ case $POWERLEVEL9K_MODE in
       SWIFT_ICON                     ''
       PUBLIC_IP_ICON                 ''
       LOCK_ICON                      $'\UE138'              # 
+      EXECUTION_TIME_ICON            $'\uF253'
     )
   ;;
   *)
@@ -201,6 +203,7 @@ case $POWERLEVEL9K_MODE in
       SWIFT_ICON                     'Swift'
       PUBLIC_IP_ICON                 ''
       LOCK_ICON                      $'\UE0A2'
+      EXECUTION_TIME_ICON            'Dur'
     )
   ;;
 esac

powerlevel9k.zsh-theme

@@ -564,9 +564,8 @@ prompt_custom() {
 prompt_command_execution_time() {
   set_default POWERLEVEL9K_COMMAND_EXECUTION_TIME_THRESHOLD 3
 
-  local timing=$((EPOCHSECONDS - _P9K_TIMER_START))
-  if [ $timing -ge $POWERLEVEL9K_COMMAND_EXECUTION_TIME_THRESHOLD ]; then
-    "$1_prompt_segment" "$0" "$2" "red" "226" "Dur ${timing}" ''
+  if [ $_P9K_COMMAND_DURATION -ge $POWERLEVEL9K_COMMAND_EXECUTION_TIME_THRESHOLD ]; then
+    "$1_prompt_segment" "$0" "$2" "red" "226" "${_P9K_COMMAND_DURATION}s" 'EXECUTION_TIME_ICON'
   fi
 }
 
@@ -1181,6 +1180,10 @@ powerlevel9k_preexec() {
 powerlevel9k_prepare_prompts() {
   RETVAL=$?
 
+  _P9K_COMMAND_DURATION=$((EPOCHSECONDS - _P9K_TIMER_START))
+  # Reset start time
+  _P9K_TIMER_START=99999999999
+
   if [[ "$POWERLEVEL9K_PROMPT_ON_NEWLINE" == true ]]; then
     PROMPT="$(print_icon 'MULTILINE_FIRST_PROMPT_PREFIX')%f%b%k$(build_left_prompt)
 $(print_icon 'MULTILINE_SECOND_PROMPT_PREFIX')"