Allow different color for master branch

- add $GIT_PROMPT_MASTER_BRANCH - color for master branch
- add $GIT_PROMPT_MASTER_BRANCHES - branch name(s) that use
  $GIT_PROMPT_MASTER_BRANCH color, 'master' by default)

All other branches will continue to use $GIT_PROMPT_BRANCH

Fixes https://github.com/magicmonty/bash-git-prompt/issues/311

gitprompt.sh

@@ -519,7 +519,15 @@ function updatePrompt() {
 
   local NEW_PROMPT="$EMPTY_PROMPT"
   if [[ -n "$git_status_fields" ]]; then
-    local STATUS_PREFIX="${PROMPT_LEADING_SPACE}${GIT_PROMPT_PREFIX}${GIT_PROMPT_BRANCH}\${GIT_BRANCH}${ResetColor}${GIT_FORMATTED_UPSTREAM}"
+
+    case "$GIT_BRANCH" in
+      $GIT_PROMPT_MASTER_BRANCHES)
+        local STATUS_PREFIX="${PROMPT_LEADING_SPACE}${GIT_PROMPT_PREFIX}${GIT_PROMPT_MASTER_BRANCH}\${GIT_BRANCH}${ResetColor}${GIT_FORMATTED_UPSTREAM}"
+        ;;
+      *)
+        local STATUS_PREFIX="${PROMPT_LEADING_SPACE}${GIT_PROMPT_PREFIX}${GIT_PROMPT_BRANCH}\${GIT_BRANCH}${ResetColor}${GIT_FORMATTED_UPSTREAM}"
+        ;;
+    esac
     local STATUS=""
 
     # __add_status KIND VALEXPR INSERT

themes/Custom.bgptemplate

@@ -14,6 +14,7 @@ override_git_prompt_colors() {
   # GIT_PROMPT_SEPARATOR="|"              # separates each item
 
   # GIT_PROMPT_BRANCH="${Magenta}"        # the git branch that is active in the current directory
+  # GIT_PROMPT_MASTER_BRANCH="${Magenta}" # used if the git branch that is active in the current directory is $GIT_PROMPT_MASTER_BRANCHES
   # GIT_PROMPT_STAGED="${Red}●"           # the number of staged files/directories
   # GIT_PROMPT_CONFLICTS="${Red}✖ "       # the number of files in conflict
   # GIT_PROMPT_CHANGED="${Blue}✚ "        # the number of changed files
@@ -53,6 +54,12 @@ override_git_prompt_colors() {
   # GIT_PROMPT_SYMBOLS_BEHIND="↓·"            # The symbol for "n versions behind of origin"
   # GIT_PROMPT_SYMBOLS_PREHASH=":"            # Written before hash of commit, if no name could be found
   # GIT_PROMPT_SYMBOLS_NO_REMOTE_TRACKING="L" # This symbol is written after the branch, if the branch is not tracked 
+
+  # branch name(s) that will use $GIT_PROMPT_MASTER_BRANCH color
+  # To specify multiple branches, use
+  #   shopt -s extglob
+  #   GIT_PROMPT_MASTER_BRANCHES='@(master|production)'
+  # GIT_PROMPT_MASTER_BRANCHES="master"
 }
 
 reload_git_prompt_colors "Custom"

themes/Default.bgptheme

@@ -42,6 +42,7 @@ define_undefined_git_prompt_colors() {
   if [ -z ${GIT_PROMPT_SEPARATOR+x} ]; then GIT_PROMPT_SEPARATOR="|"; fi              # separates each item
 
   if [ -z ${GIT_PROMPT_BRANCH+x} ]; then GIT_PROMPT_BRANCH="${Magenta}"; fi        # the git branch that is active in the current directory
+  if [ -z ${GIT_PROMPT_MASTER_BRANCH+x} ]; then GIT_PROMPT_MASTER_BRANCH="${Magenta}"; fi  # used if the git branch that is active in the current directory is $GIT_PROMPT_MASTER_BRANCHES
   if [ -z ${GIT_PROMPT_STAGED+x} ]; then GIT_PROMPT_STAGED="${Red}●"; fi           # the number of staged files/directories
   if [ -z ${GIT_PROMPT_CONFLICTS+x} ]; then GIT_PROMPT_CONFLICTS="${Red}✖ "; fi       # the number of files in conflict
   if [ -z ${GIT_PROMPT_CHANGED+x} ]; then GIT_PROMPT_CHANGED="${Blue}✚ "; fi        # the number of changed files
@@ -88,6 +89,12 @@ define_undefined_git_prompt_colors() {
   if [ -z ${GIT_PROMPT_SYMBOLS_BEHIND+x} ]; then GIT_PROMPT_SYMBOLS_BEHIND="↓·"; fi            # The symbol for "n versions behind of origin"
   if [ -z ${GIT_PROMPT_SYMBOLS_PREHASH+x} ]; then GIT_PROMPT_SYMBOLS_PREHASH=":"; fi            # Written before hash of commit, if no name could be found
   if [ -z ${GIT_PROMPT_SYMBOLS_NO_REMOTE_TRACKING+x} ]; then GIT_PROMPT_SYMBOLS_NO_REMOTE_TRACKING="L"; fi # This symbol is written after the branch, if the branch is not tracked
+
+  # branch name(s) that will use $GIT_PROMPT_MASTER_BRANCH color
+  # To specify multiple branches, use
+  #   shopt -s extglob
+  #   GIT_PROMPT_MASTER_BRANCHES='@(master|production)'
+  if [ -z ${GIT_PROMPT_MASTER_BRANCHES+x} ]; then GIT_PROMPT_MASTER_BRANCHES="master"; fi
 }
 
 # call only from theme file