.IR sep .
.SH RETURN VALUE
All argz functions that do memory allocation have a return type of
-\fIerror_t\fP, and return 0 for success, and \fBENOMEM\fP
+.IR error_t ,
+and return 0 for success, and
+.B ENOMEM
if an allocation error occurs.
.SH CONFORMING TO
These functions are a GNU extension.