From 4e3ac55ef3d73e10b0587bdfccbb49139827a332 Mon Sep 17 00:00:00 2001
From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Wed, 2 Jun 2010 00:41:33 +0200
Subject: [PATCH] Add a Windows-specific fallback to getenv("HOME");

This fixes msysGit issue 482 properly.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 compat/mingw.c    | 18 ++++++++++++++++++
 compat/mingw.h    |  3 +++
 git-compat-util.h |  4 ++++
 path.c            |  4 ++--
 shell.c           |  2 +-
 5 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/compat/mingw.c b/compat/mingw.c
index 528a0d49f2..38b5807f4b 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -1831,3 +1831,21 @@ pid_t waitpid(pid_t pid, int *status, int options)
 	errno = EINVAL;
 	return -1;
 }
+
+const char *get_windows_home_directory(void)
+{
+	static const char *home_directory = NULL;
+	struct strbuf buf = STRBUF_INIT;
+
+	if (home_directory)
+		return home_directory;
+
+	home_directory = getenv("HOME");
+	if (home_directory && *home_directory)
+		return home_directory;
+
+	strbuf_addf(&buf, "%s/%s", getenv("HOMEDRIVE"), getenv("HOMEPATH"));
+	home_directory = strbuf_detach(&buf, NULL);
+
+	return home_directory;
+}
diff --git a/compat/mingw.h b/compat/mingw.h
index 75524124a9..2fcc935b78 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -350,3 +350,6 @@ static int mingw_main(c,v)
  * Used by Pthread API implementation for Windows
  */
 extern int err_win_to_posix(DWORD winerr);
+
+extern const char *get_windows_home_directory();
+#define get_home_directory() get_windows_home_directory()
diff --git a/git-compat-util.h b/git-compat-util.h
index b701a63926..4de61f04d1 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -648,4 +648,8 @@ struct passwd *xgetpwuid_self(void);
 #define mark_as_git_dir(x) /* noop */
 #endif
 
+#ifndef get_home_directory
+#define get_home_directory() getenv("HOME")
+#endif
+
 #endif
diff --git a/path.c b/path.c
index cbbdf7d6ba..c42a6876eb 100644
--- a/path.c
+++ b/path.c
@@ -132,7 +132,7 @@ char *git_path(const char *fmt, ...)
 void home_config_paths(char **global, char **xdg, char *file)
 {
 	char *xdg_home = getenv("XDG_CONFIG_HOME");
-	char *home = getenv("HOME");
+	const char *home = get_home_directory();
 	char *to_free = NULL;
 
 	if (!home) {
@@ -273,7 +273,7 @@ char *expand_user_path(const char *path)
 		const char *username = path + 1;
 		size_t username_len = first_slash - username;
 		if (username_len == 0) {
-			const char *home = getenv("HOME");
+			const char *home = get_home_directory();
 			if (!home)
 				goto return_null;
 			strbuf_add(&user_path, home, strlen(home));
diff --git a/shell.c b/shell.c
index 84b237fef3..06a394c053 100644
--- a/shell.c
+++ b/shell.c
@@ -54,7 +54,7 @@ static char *make_cmd(const char *prog)
 
 static void cd_to_homedir(void)
 {
-	const char *home = getenv("HOME");
+	const char *home = get_home_directory();
 	if (!home)
 		die("could not determine user's home directory; HOME is unset");
 	if (chdir(home) == -1)
-- 
2.11.4.GIT