Sync with 2.21.1

* maint-2.21: (42 commits)
  Git 2.21.1
  mingw: sh arguments need quoting in more circumstances
  mingw: fix quoting of empty arguments for `sh`
  mingw: use MSYS2 quoting even when spawning shell scripts
  mingw: detect when MSYS2's sh is to be spawned more robustly
  t7415: drop v2.20.x-specific work-around
  Git 2.20.2
  t7415: adjust test for dubiously-nested submodule gitdirs for v2.20.x
  Git 2.19.3
  Git 2.18.2
  Git 2.17.3
  Git 2.16.6
  test-drop-caches: use `has_dos_drive_prefix()`
  Git 2.15.4
  Git 2.14.6
  mingw: handle `subst`-ed "DOS drives"
  mingw: refuse to access paths with trailing spaces or periods
  mingw: refuse to access paths with illegal characters
  unpack-trees: let merged_entry() pass through do_add_entry()'s errors
  quote-stress-test: offer to test quoting arguments for MSYS2 sh
  ...

1 files changed, 11 insertions, 0 deletions

diff --git a/read-cache.c b/read-cache.c
index 93a897f240..f2c53eb8a8 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -964,6 +964,9 @@ int verify_path(const char *path, unsigned mode)
 	if (has_dos_drive_prefix(path))
 		return 0;
 
+	if (!is_valid_path(path))
+		return 0;
+
 	goto inside;
 	for (;;) {
 		if (!c)
@@ -991,7 +994,15 @@ inside:
 			if ((c == '.' && !verify_dotfile(path, mode)) ||
 			    is_dir_sep(c) || c == '\0')
 				return 0;
+		} else if (c == '\\' && protect_ntfs) {
+			if (is_ntfs_dotgit(path))
+				return 0;
+			if (S_ISLNK(mode)) {
+				if (is_ntfs_dotgitmodules(path))
+					return 0;
+			}
 		}
+
 		c = *path++;
 	}
 }