typedef char **CPPFunction ();
#endif /* _FUNCTION_DEF */
+/* If non-null, this contains the address of a function that the application
+ wants called before trying the standard tilde expansions. The function
+ is called with the text sans tilde, and returns a malloc()'ed string
+ which is the expansion, or a NULL pointer if the expansion fails. */
+extern CPFunction *tilde_expansion_preexpansion_hook;
+
/* If non-null, this contains the address of a function to call if the
standard meaning for expanding a tilde fails. The function is called
with the text (sans tilde, as in "foo"), and returns a malloc()'ed string