-void *mutt_hcache_open(const char *path, const char *folder);
-void mutt_hcache_close(void *db);
-HEADER *mutt_hcache_restore(const unsigned char *d, HEADER **oh);
-void *mutt_hcache_fetch(void *db, const char *filename, size_t (*keylen)(const char *fn));
-int mutt_hcache_store(void *db, const char *filename, HEADER *h, uint64_t uid_validity, size_t (*keylen)(const char *fn));
-int mutt_hcache_delete(void *db, const char *filename, size_t (*keylen)(const char *fn));
+void *mutt_hcache_open (const char *path, const char *folder);
+void mutt_hcache_close (void *db);
+HEADER *mutt_hcache_restore (const unsigned char *d, HEADER ** oh);
+void *mutt_hcache_fetch (void *db, const char *filename,
+ size_t (*keylen) (const char *fn));
+int mutt_hcache_store (void *db, const char *filename, HEADER * h,
+ uint64_t uid_validity,
+ size_t (*keylen) (const char *fn));
+int mutt_hcache_delete (void *db, const char *filename,
+ size_t (*keylen) (const char *fn));