int hmatch_r(const char *match, int last_idx, struct env_entry **retval,
struct hsearch_data *htab);
-/* Search and delete entry matching "key" in internal hash table. */
+/**
+ * hdelete_r() - Search and delete entry in internal hash table
+ *
+ * @key: Name of entry to delete
+ * @htab: Hash table
+ * @flag: Flags to use (H_...)
+ * Return: 0 on success, -ENOENT if not found, -EPERM if the hash table callback
+ * rejected changing the variable, -EINVAL if the hash table refused to
+ * delete the variable
+ */
int hdelete_r(const char *key, struct hsearch_data *htab, int flag);
ssize_t hexport_r(struct hsearch_data *htab, const char sep, int flag,
#define H_MATCH_METHOD (H_MATCH_IDENT | H_MATCH_SUBSTR | H_MATCH_REGEX)
#define H_PROGRAMMATIC (1 << 9) /* indicate that an import is from env_set() */
#define H_ORIGIN_FLAGS (H_INTERACTIVE | H_PROGRAMMATIC)
+#define H_DEFAULT (1 << 10) /* indicate that an import is default env */
+#define H_EXTERNAL (1 << 11) /* indicate that an import is external env */
#endif /* _SEARCH_H_ */