Merge branch 'spawn-with-spaces'

This change lets us spawn .bat scripts whose paths contain spaces.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

compat/mingw.c

@@ -1268,7 +1268,9 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaen
 	si.hStdError = winansi_get_osfhandle(fherr);
 
 	/* executables and the current directory don't support long paths */
-	if (xutftowcs_path(wcmd, cmd) < 0)
+	if (*argv && !strcmp(cmd, *argv))
+		wcmd[0] = L'\0';
+	else if (xutftowcs_path(wcmd, cmd) < 0)
 		return -1;
 	if (dir && xutftowcs_path(wdir, dir) < 0)
 		return -1;
@@ -1307,8 +1309,8 @@ static pid_t mingw_spawnve_fd(const char *cmd, const char **argv, char **deltaen
 	wenvblk = make_environment_block(deltaenv);
 
 	memset(&pi, 0, sizeof(pi));
-	ret = CreateProcessW(wcmd, wargs, NULL, NULL, TRUE, flags,
-		wenvblk, dir ? wdir : NULL, &si, &pi);
+	ret = CreateProcessW(*wcmd ? wcmd : NULL, wargs, NULL, NULL, TRUE,
+		flags, wenvblk, dir ? wdir : NULL, &si, &pi);
 
 	free(wenvblk);
 	free(wargs);