git-add--interactive: never skip files included in index

Make "git add -p" to not skip files that are in index even if they are
excluded (by .gitignore etc.). This fixes the contradictory behavior
that "git status" and "git commit -a" listed such files as modified, but
"git add -p FILENAME" ignored them.

Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: pv

git-add--interactive.perl

@@ -186,7 +186,7 @@ sub list_modified {
 		@tracked = map {
 			chomp $_;
 			unquote_path($_);
-		} run_cmd_pipe(qw(git ls-files --exclude-standard --), @ARGV);
+		} run_cmd_pipe(qw(git ls-files --), @ARGV);
 		return if (!@tracked);
 	}
 

t/t3701-add-interactive.sh

@@ -138,6 +138,20 @@ test_expect_success 'real edit works' '
 	test_cmp expected output
 '
 
+test_expect_success 'skip files similarly as commit -a' '
+	git reset &&
+	echo file >.gitignore &&
+	echo changed >file &&
+	echo y | git add -p file &&
+	git diff >output &&
+	git reset &&
+	git commit -am commit &&
+	git diff >expected &&
+	test_cmp expected output &&
+	git reset --hard HEAD^
+'
+rm -f .gitignore
+
 if test "$(git config --bool core.filemode)" = false
 then
 	say 'skipping filemode tests (filesystem does not properly support modes)'