Cache the result of function to name mapping lookup when doing keycode to function mapping lookup.

input.h

@@ -3,10 +3,11 @@
 
 #include "names.h"
 
-
 typedef enum {
 	STOP, PLAY, RECORD
 } kbdstate ;
+
+
 extern kbdstate kbdmode ;	/* current keyboard macro mode  */
 extern int lastkey ;		/* last keystoke                */
 extern int kbdrep ;		/* number of repetitions        */
@@ -28,9 +29,9 @@ int newmlargt( char **outbufref, const char *prompt, int size) ;
 int ectoc( int c) ;
 
 /* Look up in names to function association table */
-const name_bind *fncmatch( char *) ;
-const name_bind *getname( void) ;
-const char *getfncname( fnp_t func) ;
+const name_bind *fncmatch( char *name) ;	/* by name */
+const name_bind *getname( void) ;			/* interactively */
+const name_bind *getfncnb( fnp_t func) ;	/* by function */
 
 int tgetc( void) ;
 int get1key( void) ;