Add command duration to the powerline theme family

Fix the __powerline_duration_prompt: location & unused variable `prompt`

Remove the duration segment from powerline* theme defaults

Different color for duration prompt segment

themes/powerline-multiline/powerline-multiline.theme.bash

@@ -94,6 +94,8 @@ COMMAND_NUMBER_THEME_PROMPT_CHAR=${POWERLINE_COMMAND_NUMBER_CHAR:="#"}
 GCLOUD_THEME_PROMPT_COLOR=${POWERLINE_GCLOUD_COLOR:=161}
 GCLOUD_CHAR=${POWERLINE_GCLOUD_CHAR:="❲G❳ "}
 
+COMMAND_DURATION_PROMPT_COLOR=${POWERLINE_COMMAND_DURATION_COLOR:=129}
+
 POWERLINE_LEFT_PROMPT=${POWERLINE_LEFT_PROMPT:="scm python_venv ruby node cwd"}
 POWERLINE_RIGHT_PROMPT=${POWERLINE_RIGHT_PROMPT:="in_vim clock battery user_info"}
 

themes/powerline/powerline.base.bash

@@ -210,6 +210,11 @@ function __powerline_command_number_prompt() {
 	echo "${COMMAND_NUMBER_THEME_PROMPT_CHAR}\#|${COMMAND_NUMBER_THEME_PROMPT_COLOR}"
 }
 
+function __powerline_duration_prompt() {
+	local duration=$(_command_duration)
+	[[ -n "$duration" ]] && echo "${duration}|${COMMAND_DURATION_PROMPT_COLOR}"
+}
+
 function __powerline_left_segment() {
 	local params
 	IFS="|" read -ra params <<< "${1}"

themes/powerline/powerline.theme.bash

@@ -91,6 +91,8 @@ COMMAND_NUMBER_THEME_PROMPT_CHAR=${POWERLINE_COMMAND_NUMBER_CHAR:="#"}
 GCLOUD_THEME_PROMPT_COLOR=${POWERLINE_GCLOUD_COLOR:=161}
 GCLOUD_CHAR=${POWERLINE_GCLOUD_CHAR:="❲G❳ "}
 
+COMMAND_DURATION_PROMPT_COLOR=${POWERLINE_COMMAND_DURATION_COLOR:=129}
+
 POWERLINE_PROMPT=${POWERLINE_PROMPT:="user_info scm python_venv ruby node cwd"}
 
 safe_append_prompt_command __powerline_prompt_command