From: Phil Hord <phil.hord@gmail.com>
Date: Tue, 4 Oct 2011 20:05:17 +0000 (-0400)
Subject: Learn to handle gitfiles in enter_repo
X-Git-Tag: v1.7.8-rc0~31^2~3
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/03106768afa0be60346bb335f9fd11063622c91d

Learn to handle gitfiles in enter_repo

The enter_repo() function is used to navigate into a .git
directory.  It knows how to find standard alternatives (DWIM) but
it doesn't handle gitfiles created by git init --separate-git-dir.
This means that git-fetch and others do not work with repositories
using the separate-git-dir mechanism.

Teach enter_repo() to deal with the gitfile mechanism by resolving
the path to the redirected path and continuing tests on that path
instead of the found file.

Signed-off-by: Phil Hord <hordp@cisco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/path.c b/path.c
index 01028f2826..b6f71d1086 100644
--- a/path.c
+++ b/path.c
@@ -295,6 +295,7 @@ const char *enter_repo(const char *path, int strict)
 		static const char *suffix[] = {
 			".git/.git", "/.git", ".git", "", NULL,
 		};
+		const char *gitfile;
 		int len = strlen(path);
 		int i;
 		while ((1 < len) && (path[len-1] == '/'))
@@ -329,7 +330,12 @@ const char *enter_repo(const char *path, int strict)
 				break;
 			}
 		}
-		if (!suffix[i] || chdir(used_path))
+		if (!suffix[i])
+			return NULL;
+		gitfile = read_gitfile(used_path) ;
+		if (gitfile)
+			strcpy(used_path, gitfile);
+		if (chdir(used_path))
 			return NULL;
 		path = validated_path;
 	}