From: Johannes Sixt <johannes.sixt@telecom.at>
Date: Mon, 21 Jul 2008 19:19:57 +0000 (+0200)
Subject: Windows: Make sure argv[0] has a path
X-Git-Tag: v1.6.0-rc1~21
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=35eeef47220c68c92d0f377f5678c42da2232c20;p=git

Windows: Make sure argv[0] has a path

Since the exec-path on Windows is derived from the program invocation path,
we must ensure that argv[0] always has a path. Unfortunately, if a program
is invoked from CMD, argv[0] has no path. But on the other hand, the
C runtime offers a global variable, _pgmptr, that always has the full path
to the program. We hook into main() with a preprocessor macro, where we
replace argv[0].

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/compat/mingw.h b/compat/mingw.h
index 8ffec51e73..290a9e6f82 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -223,3 +223,15 @@ void mingw_open_html(const char *path);
 char **copy_environ(void);
 void free_environ(char **env);
 char **env_setenv(char **env, const char *name);
+
+/*
+ * A replacement of main() that ensures that argv[0] has a path
+ */
+
+#define main(c,v) main(int argc, const char **argv) \
+{ \
+	static int mingw_main(); \
+	argv[0] = xstrdup(_pgmptr); \
+	return mingw_main(argc, argv); \
+} \
+static int mingw_main(c,v)