1 files changed, 49 insertions, 16 deletions

diff --git a/path.c b/path.c
index fe3c4d96c6..efcedafba6 100644
--- a/path.c
+++ b/path.c
@@ -6,6 +6,7 @@
 #include "string-list.h"
 #include "dir.h"
 #include "worktree.h"
+#include "submodule-config.h"
 
 static int get_st_mode_bits(const char *path, int *mode)
 {
@@ -24,7 +25,8 @@ static struct strbuf *get_pathname(void)
 		STRBUF_INIT, STRBUF_INIT, STRBUF_INIT, STRBUF_INIT
 	};
 	static int index;
-	struct strbuf *sb = &pathname_array[3 & ++index];
+	struct strbuf *sb = &pathname_array[index];
+	index = (index + 1) % ARRAY_SIZE(pathname_array);
 	strbuf_reset(sb);
 	return sb;
 }
@@ -468,12 +470,16 @@ const char *worktree_git_path(const struct worktree *wt, const char *fmt, ...)
 	return pathname->buf;
 }
 
-static void do_submodule_path(struct strbuf *buf, const char *path,
-			      const char *fmt, va_list args)
+/* Returns 0 on success, negative on failure. */
+#define SUBMODULE_PATH_ERR_NOT_CONFIGURED -1
+static int do_submodule_path(struct strbuf *buf, const char *path,
+			     const char *fmt, va_list args)
 {
 	const char *git_dir;
 	struct strbuf git_submodule_common_dir = STRBUF_INIT;
 	struct strbuf git_submodule_dir = STRBUF_INIT;
+	const struct submodule *sub;
+	int err = 0;
 
 	strbuf_addstr(buf, path);
 	strbuf_complete(buf, '/');
@@ -484,6 +490,17 @@ static void do_submodule_path(struct strbuf *buf, const char *path,
 		strbuf_reset(buf);
 		strbuf_addstr(buf, git_dir);
 	}
+	if (!is_git_directory(buf->buf)) {
+		gitmodules_config();
+		sub = submodule_from_path(null_sha1, path);
+		if (!sub) {
+			err = SUBMODULE_PATH_ERR_NOT_CONFIGURED;
+			goto cleanup;
+		}
+		strbuf_reset(buf);
+		strbuf_git_path(buf, "%s/%s", "modules", sub->name);
+	}
+
 	strbuf_addch(buf, '/');
 	strbuf_addbuf(&git_submodule_dir, buf);
 
@@ -494,27 +511,38 @@ static void do_submodule_path(struct strbuf *buf, const char *path,
 
 	strbuf_cleanup_path(buf);
 
+cleanup:
 	strbuf_release(&git_submodule_dir);
 	strbuf_release(&git_submodule_common_dir);
+
+	return err;
 }
 
 char *git_pathdup_submodule(const char *path, const char *fmt, ...)
 {
+	int err;
 	va_list args;
 	struct strbuf buf = STRBUF_INIT;
 	va_start(args, fmt);
-	do_submodule_path(&buf, path, fmt, args);
+	err = do_submodule_path(&buf, path, fmt, args);
 	va_end(args);
+	if (err) {
+		strbuf_release(&buf);
+		return NULL;
+	}
 	return strbuf_detach(&buf, NULL);
 }
 
-void strbuf_git_path_submodule(struct strbuf *buf, const char *path,
-			       const char *fmt, ...)
+int strbuf_git_path_submodule(struct strbuf *buf, const char *path,
+			      const char *fmt, ...)
 {
+	int err;
 	va_list args;
 	va_start(args, fmt);
-	do_submodule_path(buf, path, fmt, args);
+	err = do_submodule_path(buf, path, fmt, args);
 	va_end(args);
+
+	return err;
 }
 
 static void do_git_common_path(struct strbuf *buf,
@@ -963,7 +991,7 @@ const char *remove_leading_path(const char *in, const char *prefix)
  *
  * Performs the following normalizations on src, storing the result in dst:
  * - Ensures that components are separated by '/' (Windows only)
- * - Squashes sequences of '/'.
+ * - Squashes sequences of '/' except "//server/share" on Windows
  * - Removes "." components.
  * - Removes ".." components, and the components the precede them.
  * Returns failure (non-zero) if a ".." component appears as first path
@@ -986,17 +1014,22 @@ const char *remove_leading_path(const char *in, const char *prefix)
 int normalize_path_copy_len(char *dst, const char *src, int *prefix_len)
 {
 	char *dst0;
-	int i;
+	const char *end;
 
-	for (i = has_dos_drive_prefix(src); i > 0; i--)
-		*dst++ = *src++;
+	/*
+	 * Copy initial part of absolute path: "/", "C:/", "//server/share/".
+	 */
+	end = src + offset_1st_component(src);
+	while (src < end) {
+		char c = *src++;
+		if (is_dir_sep(c))
+			c = '/';
+		*dst++ = c;
+	}
 	dst0 = dst;
 
-	if (is_dir_sep(*src)) {
-		*dst++ = '/';
-		while (is_dir_sep(*src))
-			src++;
-	}
+	while (is_dir_sep(*src))
+		src++;
 
 	for (;;) {
 		char c = *src;