Index: uspace/lib/libc/include/ctype.h
===================================================================
--- uspace/lib/libc/include/ctype.h	(revision d0b72c45f562dfcf47a6a3ed86ad92b31c953dee)
+++ uspace/lib/libc/include/ctype.h	(revision a0edf5f83740c6ba4b11f166e36e317d198be0e2)
@@ -36,7 +36,17 @@
 #define LIBC_CTYPE_H_
 
+static inline int islower(int c)
+{
+	return ((c >= 'a') && (c <= 'z'));
+}
+
+static inline int isupper(int c)
+{
+	return ((c >= 'A') && (c <= 'Z'));
+}
+
 static inline int isalpha(int c)
 {
-	return (((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')));
+	return (islower(c) || isupper(c));
 }
 
Index: uspace/lib/libc/include/libadt/hash_table.h
===================================================================
--- uspace/lib/libc/include/libadt/hash_table.h	(revision d0b72c45f562dfcf47a6a3ed86ad92b31c953dee)
+++ uspace/lib/libc/include/libadt/hash_table.h	(revision a0edf5f83740c6ba4b11f166e36e317d198be0e2)
@@ -56,7 +56,8 @@
 	/** Hash function.
 	 *
-	 * @param key Array of keys needed to compute hash index. All keys must be passed.
+	 * @param key 	Array of keys needed to compute hash index. All keys
+	 *		must be passed.
 	 *
-	 * @return Index into hash table.
+	 * @return	Index into hash table.
 	 */
 	hash_index_t (* hash)(unsigned long key[]);
@@ -64,7 +65,8 @@
 	/** Hash table item comparison function.
 	 *
-	 * @param key Array of keys that will be compared with item. It is not necessary to pass all keys.
+	 * @param key 	Array of keys that will be compared with item. It is
+	 *		not necessary to pass all keys.
 	 *
-	 * @return true if the keys match, false otherwise.
+	 * @return 	true if the keys match, false otherwise.
 	 */
 	int (*compare)(unsigned long key[], hash_count_t keys, link_t *item);
@@ -72,5 +74,5 @@
 	/** Hash table item removal callback.
 	 *
-	 * @param item Item that was removed from the hash table.
+	 * @param item 	Item that was removed from the hash table.
 	 */
 	void (*remove_callback)(link_t *item);