Windows: Use the Windows style PATH separator ';'.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>

Documentation/git.txt

@@ -409,9 +409,9 @@ git so take care if using Cogito etc.
 'GIT_ALTERNATE_OBJECT_DIRECTORIES'::
 	Due to the immutable nature of git objects, old objects can be
 	archived into shared, read-only directories. This variable
-	specifies a ":" separated list of git object directories which
-	can be used to search for git objects. New objects will not be
-	written to these directories.
+	specifies a ":" separated (on Windows ";" separated) list
+	of git object directories which can be used to search for git
+	objects. New objects will not be written to these directories.
 
 'GIT_DIR'::
 	If the 'GIT_DIR' environment variable is set then it

compat/mingw.h

@@ -132,3 +132,9 @@ int getpagesize(void);	/* defined in MinGW's libgcc.a */
 struct passwd *getpwuid(int uid);
 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
+
+/*
+ * git specific compatibility
+ */
+
+#define PATH_SEP ';'

exec_cmd.c

@@ -37,7 +37,7 @@ static void add_path(struct strbuf *out, const char *path)
 		else
 			strbuf_addstr(out, make_absolute_path(path));
 
-		strbuf_addch(out, ':');
+		strbuf_addch(out, PATH_SEP);
 	}
 }
 

git-compat-util.h

@@ -110,6 +110,10 @@
 #define PRIuMAX "llu"
 #endif
 
+#ifndef PATH_SEP
+#define PATH_SEP ':'
+#endif
+
 #ifdef __GNUC__
 #define NORETURN __attribute__((__noreturn__))
 #else

sha1_file.c

@@ -392,7 +392,7 @@ void prepare_alt_odb(void)
 	if (!alt) alt = "";
 
 	alt_odb_tail = &alt_odb_list;
-	link_alt_odb_entries(alt, alt + strlen(alt), ':', NULL, 0);
+	link_alt_odb_entries(alt, alt + strlen(alt), PATH_SEP, NULL, 0);
 
 	read_info_alternates(get_object_directory(), 0);
 }