chore(kube-ps1): update to most recent version (#10980)

plugins/kube-ps1/README.md

@@ -128,6 +128,7 @@ the following environment variables:
 | `KUBE_PS1_NS_ENABLE` | `true` | Display the namespace. If set to `false`, this will also disable `KUBE_PS1_DIVIDER` |
 | `KUBE_PS1_PREFIX` | `(` | Prompt opening character  |
 | `KUBE_PS1_SYMBOL_ENABLE` | `true ` | Display the prompt Symbol. If set to `false`, this will also disable `KUBE_PS1_SEPARATOR` |
+| `KUBE_PS1_SYMBOL_PADDING` | `false` | Adds a space (padding) after the symbol to prevent clobbering prompt characters |
 | `KUBE_PS1_SYMBOL_DEFAULT` | `⎈ ` | Default prompt symbol. Unicode `\u2388` |
 | `KUBE_PS1_SYMBOL_USE_IMG` | `false` | ☸️  ,  Unicode `\u2638` as the prompt symbol |
 | `KUBE_PS1_SEPARATOR` | | | Separator between symbol and context name |
@@ -151,8 +152,10 @@ The default colors are set with the following environment variables:
 
 | Variable | Default | Meaning |
 | :------- | :-----: | ------- |
+| `KUBE_PS1_PREFIX_COLOR` | `null` | Set default color of the prompt prefix |
 | `KUBE_PS1_SYMBOL_COLOR` | `blue` | Set default color of the Kubernetes symbol |
 | `KUBE_PS1_CTX_COLOR` | `red` | Set default color of the context |
+| `KUBE_PS1_SUFFIX_COLOR` | `null` | Set default color of the prompt suffix |
 | `KUBE_PS1_NS_COLOR` | `cyan` | Set default color of the namespace |
 | `KUBE_PS1_BG_COLOR` | `null` | Set default color of the prompt background |
 

plugins/kube-ps1/kube-ps1.plugin.zsh

-#!/bin/bash
+#!/usr/bin/env bash
 
 # Kubernetes prompt helper for bash/zsh
 # Displays current context and namespace
 
-# Copyright 2019 Jon Mosco
+# Copyright 2021 Jon Mosco
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -24,7 +24,8 @@
 # Override these values in ~/.zshrc or ~/.bashrc
 KUBE_PS1_BINARY="${KUBE_PS1_BINARY:-kubectl}"
 KUBE_PS1_SYMBOL_ENABLE="${KUBE_PS1_SYMBOL_ENABLE:-true}"
-KUBE_PS1_SYMBOL_DEFAULT=${KUBE_PS1_SYMBOL_DEFAULT:-$'\u2388 '}
+KUBE_PS1_SYMBOL_DEFAULT=${KUBE_PS1_SYMBOL_DEFAULT:-$'\u2388'}
+KUBE_PS1_SYMBOL_PADDING="${KUBE_PS1_SYMBOL_PADDING:-false}"
 KUBE_PS1_SYMBOL_USE_IMG="${KUBE_PS1_SYMBOL_USE_IMG:-false}"
 KUBE_PS1_NS_ENABLE="${KUBE_PS1_NS_ENABLE:-true}"
 KUBE_PS1_CONTEXT_ENABLE="${KUBE_PS1_CONTEXT_ENABLE:-true}"
@@ -32,10 +33,12 @@ KUBE_PS1_PREFIX="${KUBE_PS1_PREFIX-(}"
 KUBE_PS1_SEPARATOR="${KUBE_PS1_SEPARATOR-|}"
 KUBE_PS1_DIVIDER="${KUBE_PS1_DIVIDER-:}"
 KUBE_PS1_SUFFIX="${KUBE_PS1_SUFFIX-)}"
+
 KUBE_PS1_SYMBOL_COLOR="${KUBE_PS1_SYMBOL_COLOR-blue}"
 KUBE_PS1_CTX_COLOR="${KUBE_PS1_CTX_COLOR-red}"
 KUBE_PS1_NS_COLOR="${KUBE_PS1_NS_COLOR-cyan}"
 KUBE_PS1_BG_COLOR="${KUBE_PS1_BG_COLOR}"
+
 KUBE_PS1_KUBECONFIG_CACHE="${KUBECONFIG}"
 KUBE_PS1_DISABLE_PATH="${HOME}/.kube/kube-ps1/disabled"
 KUBE_PS1_LAST_TIME=0
@@ -149,18 +152,17 @@ _kube_ps1_symbol() {
 
   case "${KUBE_PS1_SHELL}" in
     bash)
-      if ((BASH_VERSINFO[0] >= 4)) && [[ $'\u2388 ' != "\\u2388 " ]]; then
+      if ((BASH_VERSINFO[0] >= 4)) && [[ $'\u2388' != "\\u2388" ]]; then
         KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_DEFAULT}"
-        # KUBE_PS1_SYMBOL=$'\u2388 '
-        KUBE_PS1_SYMBOL_IMG=$'\u2638 '
+        KUBE_PS1_SYMBOL_IMG=$'\u2638\ufe0f'
       else
-        KUBE_PS1_SYMBOL=$'\xE2\x8E\x88 '
-        KUBE_PS1_SYMBOL_IMG=$'\xE2\x98\xB8 '
+        KUBE_PS1_SYMBOL=$'\xE2\x8E\x88'
+        KUBE_PS1_SYMBOL_IMG=$'\xE2\x98\xB8'
       fi
       ;;
     zsh)
       KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_DEFAULT}"
-      KUBE_PS1_SYMBOL_IMG="\u2638 ";;
+      KUBE_PS1_SYMBOL_IMG="\u2638";;
     *)
       KUBE_PS1_SYMBOL="k8s"
   esac
@@ -169,7 +171,12 @@ _kube_ps1_symbol() {
     KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_IMG}"
   fi
 
-  echo "${KUBE_PS1_SYMBOL}"
+  if [[ "${KUBE_PS1_SYMBOL_PADDING}" == true ]]; then
+    echo "${KUBE_PS1_SYMBOL} "
+  else
+    echo "${KUBE_PS1_SYMBOL}"
+  fi
+
 }
 
 _kube_ps1_split() {
@@ -339,7 +346,11 @@ kube_ps1() {
   [[ -n "${KUBE_PS1_BG_COLOR}" ]] && KUBE_PS1+="$(_kube_ps1_color_bg ${KUBE_PS1_BG_COLOR})"
 
   # Prefix
-  [[ -n "${KUBE_PS1_PREFIX}" ]] && KUBE_PS1+="${KUBE_PS1_PREFIX}"
+  if [[ -z "${KUBE_PS1_PREFIX_COLOR:-}" ]] && [[ -n "${KUBE_PS1_PREFIX}" ]]; then
+      KUBE_PS1+="${KUBE_PS1_PREFIX}"
+  else
+      KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_PREFIX_COLOR)${KUBE_PS1_PREFIX}${KUBE_PS1_RESET_COLOR}"
+  fi
 
   # Symbol
   KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_SYMBOL_COLOR)$(_kube_ps1_symbol)${KUBE_PS1_RESET_COLOR}"
@@ -362,7 +373,11 @@ kube_ps1() {
   fi
 
   # Suffix
-  [[ -n "${KUBE_PS1_SUFFIX}" ]] && KUBE_PS1+="${KUBE_PS1_SUFFIX}"
+  if [[ -z "${KUBE_PS1_SUFFIX_COLOR:-}" ]] && [[ -n "${KUBE_PS1_SUFFIX}" ]]; then
+      KUBE_PS1+="${KUBE_PS1_SUFFIX}"
+  else
+      KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_SUFFIX_COLOR)${KUBE_PS1_SUFFIX}${KUBE_PS1_RESET_COLOR}"
+  fi
 
   # Close Background color if defined
   [[ -n "${KUBE_PS1_BG_COLOR}" ]] && KUBE_PS1+="${_KUBE_PS1_OPEN_ESC}${_KUBE_PS1_DEFAULT_BG}${_KUBE_PS1_CLOSE_ESC}"