Improve comments

4 files changed, 11 insertions, 4 deletions

diff --git a/index.c b/index.c
index 817671f..c1e3f1e 100644
--- a/index.c
+++ b/index.c
@@ -3,9 +3,13 @@
 /* please read http://www.gnu.org/copyleft/gpl.html.           */
 /* ########################################################### */
 
-/* Ternary Search Tree and sorted array creation functions          */
-/* Inspired by: https://www.cs.princeton.edu/~rs/strings/tstdemo.c. */
-/* **************************************************************** */
+/* Ternary Search Tree and sorted array creation functions.                 */
+/* Inspired by a code described in "Ternary Search Trees" by Jon            */
+/* Bentley and Robert Sedgewick in the April, 1998, Dr. Dobb's Journal.     */
+/* Links:                                                                   */
+/*   https://www.drdobbs.com/database/ternary-search-trees/184410528?pgno=1 */
+/*   https://www.cs.princeton.edu/~rs/strings/tstdemo.c.                    */
+/* ************************************************************************ */
 
 #include <stdlib.h>
 #include <stdint.h>
diff --git a/smenu.c b/smenu.c
index f28b90b..e75d2d7 100644
--- a/smenu.c
+++ b/smenu.c
@@ -156,8 +156,9 @@ help(win_t * win, term_t * term, long last_line, toggle_t * toggle)
     int    len;  /* length of one of these objects.                        */
   };
 
-  char *         arrows = concat(left_arrow, up_arrow, right_arrow, down_arrow,
+  char * arrows = concat(left_arrow, up_arrow, right_arrow, down_arrow,
                          (char *)0);
+
   struct entry_s entries[] = {
     { 'n', "Move:", 5 }, { 'b', arrows, 4 },   { 'n', "|", 1 },
     { 'b', "h", 1 },     { 'b', "j", 1 },      { 'b', "k", 1 },
diff --git a/utf8.c b/utf8.c
index b72d449..6193bde 100644
--- a/utf8.c
+++ b/utf8.c
@@ -531,6 +531,7 @@ utf8_strprefix(char * d, char * s, long n, long * pos)
 
 /* ================================================== */
 /* Converts a UTF-8 glyph string to a wchar_t string. */
+/* The returned string must be freed by the caller.   */
 /* ================================================== */
 wchar_t *
 utf8_strtowcs(char * s)
diff --git a/utils.c b/utils.c
index 199fcf9..add1346 100644
--- a/utils.c
+++ b/utils.c
@@ -186,6 +186,7 @@ concat(const char * s1, ...)
 
 /* =============================================== */
 /* Is the string str2 a prefix of the string str1? */
+/* Returns 1 if true, else 0.                      */
 /* =============================================== */
 int
 strprefix(char * str1, char * str2)