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.) to indicate the state of
the tree.

Signed-off-by: Simon Oosthoek <s.oosth...@xs4all.nl>
---
 contrib/completion/git-prompt.sh |   36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh
index 4fbc1e6..a693565 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
@@ -206,6 +212,7 @@ __git_ps1_show_upstream ()
 # 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.
+# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
 __git_ps1 ()
 {
        local pcmode=no
@@ -319,9 +326,36 @@ __git_ps1 ()
                local f="$w$i$s$u"
                if [ $pcmode = yes ]; then
                        PS1="$ps1pc_start("
-                       PS1="$PS1$c${b##refs/heads/}${f:+ $f}$r$p"
+                       if [ -n "${GIT_PS1_SHOWCOLORHINT-}" ]; then
+                               local c_red='\e[31m'
+                               local c_green='\e[32m'
+                               local c_yellow='\e[33m'
+                               local c_lblue='\e[1;34m'
+                               local c_purple='\e[35m'
+                               local c_cyan='\e[36m'
+                               local c_clear='\e[0m'
+                               local branchstring="$c${b##refs/heads/}"
+                               local branch_color="$c_green"
+                               local flags_color="$c_cyan"
+
+                               if [ "$w" = "*" ]; then
+                                       branch_color="$c_red"
+                               elif [ -n "$i" ]; then
+                                       branch_color="$c_yellow"
+                               fi
+
+                               # Setting PS1 directly with \[ and \] around 
colors
+                               # is necessary to prevent wrapping issues!
+                               
PS1="$PS1\[$branch_color\]$branchstring\[$c_clear\]"
+                               if [ -n "$f" ]; then
+                                       PS1="$PS1 
\[$flags_color\]$f\[$c_clear\]"
+                               fi
+                       else
+                               PS1="$PS1$c${b##refs/heads/}${f:+ $f}$r$p"
+                       fi
                        PS1="$PS1)$ps1pc_end"
                else
+                       # NO color option unless in PROMPT_COMMAND mode
                        printf -- "$printf_format" "$c${b##refs/heads/}${f:+ 
$f}$r$p"
                fi
        fi
-- 
1.7.9.5
--
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