Merge branch 'tb/complete-status'

The completion script (in contrib/) learned to complete "git
status" options.

* tb/complete-status:
  completion: add git status
  completion: add __git_get_option_value helper
  completion: factor out untracked file modes into a variable

contrib/completion/git-completion.bash

@@ -803,6 +803,50 @@ __git_find_on_cmdline ()
 	done
 }
 
+# Echo the value of an option set on the command line or config
+#
+# $1: short option name
+# $2: long option name including =
+# $3: list of possible values
+# $4: config string (optional)
+#
+# example:
+# result="$(__git_get_option_value "-d" "--do-something=" \
+#     "yes no" "core.doSomething")"
+#
+# result is then either empty (no option set) or "yes" or "no"
+#
+# __git_get_option_value requires 3 arguments
+__git_get_option_value ()
+{
+	local c short_opt long_opt val
+	local result= values config_key word
+
+	short_opt="$1"
+	long_opt="$2"
+	values="$3"
+	config_key="$4"
+
+	((c = $cword - 1))
+	while [ $c -ge 0 ]; do
+		word="${words[c]}"
+		for val in $values; do
+			if [ "$short_opt$val" = "$word" ] ||
+			   [ "$long_opt$val"  = "$word" ]; then
+				result="$val"
+				break 2
+			fi
+		done
+		((c--))
+	done
+
+	if [ -n "$config_key" ] && [ -z "$result" ]; then
+		result="$(git --git-dir="$(__gitdir)" config "$config_key")"
+	fi
+
+	echo "$result"
+}
+
 __git_has_doubledash ()
 {
 	local c=1
@@ -1098,6 +1142,8 @@ _git_clone ()
 	esac
 }
 
+__git_untracked_file_modes="all no normal"
+
 _git_commit ()
 {
 	case "$prev" in
@@ -1119,7 +1165,7 @@ _git_commit ()
 		return
 		;;
 	--untracked-files=*)
-		__gitcomp "all no normal" "" "${cur##--untracked-files=}"
+		__gitcomp "$__git_untracked_file_modes" "" "${cur##--untracked-files=}"
 		return
 		;;
 	--*)
@@ -1780,6 +1826,56 @@ _git_stage ()
 	_git_add
 }
 
+_git_status ()
+{
+	local complete_opt
+	local untracked_state
+
+	case "$cur" in
+	--ignore-submodules=*)
+		__gitcomp "none untracked dirty all" "" "${cur##--ignore-submodules=}"
+		return
+		;;
+	--untracked-files=*)
+		__gitcomp "$__git_untracked_file_modes" "" "${cur##--untracked-files=}"
+		return
+		;;
+	--column=*)
+		__gitcomp "
+			always never auto column row plain dense nodense
+			" "" "${cur##--column=}"
+		return
+		;;
+	--*)
+		__gitcomp "
+			--short --branch --porcelain --long --verbose
+			--untracked-files= --ignore-submodules= --ignored
+			--column= --no-column
+			"
+		return
+		;;
+	esac
+
+	untracked_state="$(__git_get_option_value "-u" "--untracked-files=" \
+		"$__git_untracked_file_modes" "status.showUntrackedFiles")"
+
+	case "$untracked_state" in
+	no)
+		# --ignored option does not matter
+		complete_opt=
+		;;
+	all|normal|*)
+		complete_opt="--cached --directory --no-empty-directory --others"
+
+		if [ -n "$(__git_find_on_cmdline "--ignored")" ]; then
+			complete_opt="$complete_opt --ignored --exclude=*"
+		fi
+		;;
+	esac
+
+	__git_complete_index_file "$complete_opt"
+}
+
 __git_config_get_set_variables ()
 {
 	local prevword word config_file= c=$cword