Re: [PATCH 2/2] show color hints based on state of the git tree

By setting GIT_PS1_SHOW_COLORHINTS when using __git_ps1
as PROMPT_COMMAND, you will get color hints in addition to
a different character (*+% etc.)

Signed-off-by: Simon Oosthoek <redacted>
---
 contrib/completion/git-prompt.sh |   42 +++++++++++++++++++++++++++++++++++---
 1 file changed, 39 insertions(+), 3 deletions(-)

diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh
index c50c94a..51285d7 100644
--- a/contrib/completion/git-prompt.sh
+++ b/contrib/completion/git-prompt.sh

@@ -53,6 +53,12 @@
 # find one, or @{upstream} otherwise.  Once you have set
 # GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
 # setting the bash.showUpstream config variable.
+#
+# If you would like a colored hint about the current dirty state, set
+# GIT_PS1_SHOWCOLORHINTS to a nonempty value. When tracked files are
+# modified, the branch name turns red, when all modifications are staged
+# the branch name turns yellow and when all changes are checked in, the
+# color changes to green. The colors are currently hardcoded in the function.
 
 # __gitdir accepts 0 or 1 arguments (i.e., location)
 # returns location of .git repo

@@ -201,11 +207,12 @@ __git_ps1_show_upstream ()
 # __git_ps1 accepts 0 or 1 arguments (i.e., format string)
 # when called from PS1 using command substitution
 # in this mode it returns text to add to bash PS1 prompt (includes branch name) or
-# __git_ps1 accepts 0 or 2 arguments when called from PROMPT_COMMAND
+# __git_ps1 accepts 0 or 2 arguments when called from PROMPT_COMMAND (pc)
 # in that case it _sets_ PS1. The arguments are parts of a PS1 string.
 # when both arguments are given, the first is prepended and the second appended
 # to the state string when assigned to PS1, otherwise default start/end strings
 # are used.
+# In pcmode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
 __git_ps1 ()
 {
 	local pcmode=yes

@@ -320,8 +327,37 @@ __git_ps1 ()
 
 		local f="$w$i$s$u"
 		if [ $pcmode = yes ]; then
-			PS1="$ps1pc_start($c${b##refs/heads/}${f:+ $f}$r$p)$ps1pc_end"
-		elif [ $pcmode = no ]; then
+			PS1="$ps1pc_start("
+			if [ -n "${GIT_PS1_SHOWCOLORHINT-}" ]; then