Merge branch 'js/last-modified-with-sparse-checkouts'

"git last-modified" used to mishandle "--" to mark the beginning of
pathspec, which has been corrected.

* js/last-modified-with-sparse-checkouts:
  last-modified: support sparse checkouts

Author: gitster

builtin/last-modified.c

@@ -525,7 +525,8 @@ int cmd_last_modified(int argc, const char **argv, const char *prefix,
 
 	argc = parse_options(argc, argv, prefix, last_modified_options,
 			     last_modified_usage,
-			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN_OPT);
+			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN_OPT |
+			     PARSE_OPT_KEEP_DASHDASH);
 
 	repo_config(repo, git_default_config, NULL);
 

t/t8020-last-modified.sh

@@ -78,6 +78,14 @@ test_expect_success 'last-modified subdir' '
 	EOF
 '
 
+test_expect_success 'last-modified in sparse checkout' '
+	test_when_finished "git sparse-checkout disable" &&
+	git sparse-checkout set b &&
+	check_last_modified -- a <<-\EOF
+	3 a
+	EOF
+'
+
 test_expect_success 'last-modified subdir recursive' '
 	check_last_modified -r a <<-\EOF
 	3 a/b/file