[PATCH] Show the presence of untracked files in the bash prompt.

[Daniel Trstenjak <daniel.trstenjak@science-computing.de>]

Added the envvar GIT_PS1_SHOWUNTRACKEDFILES to 'git-completion.bash'.
When set to a nonempty value, then the char '%' will be shown next
to the branch name in the bash prompt.

Signed-off-by: Daniel Trstenjak <daniel.trstenjak@science-computing.de>
---
 contrib/completion/git-completion.bash |   16 ++++++++++++++--
 1 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 887731e..4c0f7d2 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -44,6 +44,10 @@
 #       GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
 #       then a '$' will be shown next to the branch name.
 #
+#       If you would like to see if there're untracked files, then you can
+#       set GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're
+#       untracked files, then a '%' will be shown next to the branch name.
+#
 # To submit patches:
 #
 #    *) Read Documentation/SubmittingPatches
@@ -132,6 +136,7 @@ __git_ps1 ()
 		local w
 		local i
 		local s
+		local u
 		local c
 
 		if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
@@ -156,12 +161,19 @@ __git_ps1 ()
 			if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ]; then
 			        git rev-parse --verify refs/stash >/dev/null 2>&1 && s="$"
 			fi
+
+			if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ]; then
+			   local num_untracked_files=$(git ls-files --others --exclude-standard | wc -l)
+			   if [ $num_untracked_files -gt "0" ]; then
+			      u="%"
+			   fi
+			fi
 		fi
 
 		if [ -n "${1-}" ]; then
-			printf "$1" "$c${b##refs/heads/}$w$i$s$r"
+			printf "$1" "$c${b##refs/heads/}$w$i$s$u$r"
 		else
-			printf " (%s)" "$c${b##refs/heads/}$w$i$s$r"
+			printf " (%s)" "$c${b##refs/heads/}$w$i$s$u$r"
 		fi
 	fi
 }
-- 
1.6.2


-- 
                                                                                                                                           
 Daniel Trstenjak         Tel   : +49 (0)7071-9457-264
 science + computing ag   FAX   : +49 (0)7071-9457-511
 Hagellocher Weg 73       mailto: Daniel.Trstenjak@science-computing.de
 D-72070 Tübingen         WWW   : http://www.science-computing.de/                                                                      
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