void closefds(int);
char *concat (const char *, ...);
int context_del (char *);
-char *context_find (char *);
+char *context_find (const char *);
+char *context_find_by_type (const char *, const char *, const char *);
int context_foil (char *);
void context_read (void);
void context_replace (char *, char *);