fixes in win

Author: peter

README.md

@@ -65,7 +65,7 @@ Options:
 * -a - autosave on exit and autoload on start (autosave file);
 * -x - execute lua script;
 * -m - enable multimedia output;
-* -mcmd - enable run cmd on multimedia (for ex. -m/usr/bin/xdg-open).
+* -mcmd - enable run cmd on multimedia. Examples: -m/usr/bin/xdg-open (Linux), -m/bin/plumb (Plan9), -m"start\"\"" (Windows).
 
 ## Links
 

main.c

@@ -242,7 +242,7 @@ static void mmedia_run(const char *f)
 	static char cmd[512];
 	if (!mmedia_bin || !mmedia_bin[0])
 		return;
-	snprintf(cmd, sizeof(cmd), "%s %s", mmedia_bin, f);
+	snprintf(cmd, sizeof(cmd), "%s \"%s\"", mmedia_bin, f);
 	/* not safe! but it is windows... */
 	system(cmd);
 #endif