-ssize_t mutt_gecos_name(char *dst, ssize_t n, struct passwd *pw, rx_t *rx);
+ssize_t mutt_gecos_name(char *dst, ssize_t n, struct passwd *pw, regex_t *rx);
+int getdnsdomainname(char *, ssize_t);
+
+/* flags for _mutt_system() */
+#define M_DETACH_PROCESS 1 /* detach subprocess from group */
+
+#define mutt_system(x) _mutt_system(x,0)
+int _mutt_system (const char *, int);
+