1 files changed, 22 insertions, 16 deletions

diff --git a/treeutil.h b/treeutil.h
index 302a6e3..76627c0 100644
--- a/treeutil.h
+++ b/treeutil.h
@@ -1,33 +1,38 @@
 // aux display and verification routines, helpful but not essential
 struct trunk {
         struct trunk *prev;
-        char * str;
+        const char *  str;
 };
- 
-static void show_trunks(struct trunk *p)
+
+static void
+show_trunks(struct trunk *p)
 {
-        if (!p) return;
+        if ( !p )
+                return;
         show_trunks(p->prev);
         printf("%s", p->str);
 }
- 
+
 // this is very haphazzard
-static void show_tree(struct tree_node *root, struct trunk *prev, int is_left)
+static void
+show_tree(struct tree_node *root, struct trunk *prev, int is_left)
 {
-        if (root == NULL) return;
+        if ( root == NULL )
+                return;
 
         struct trunk this_disp = { prev, "    " };
-        char *prev_str = this_disp.str;
+        const char * prev_str  = this_disp.str;
         show_tree(root->right, &this_disp, 1);
 
-        if (!prev)
+        if ( !prev )
                 this_disp.str = "---";
-        else if (is_left) {
+        else if ( is_left ) {
                 this_disp.str = ".--";
-                prev_str = "   |";
-        } else {
+                prev_str      = "   |";
+        }
+        else {
                 this_disp.str = "`--";
-                prev->str = prev_str;
+                prev->str     = prev_str;
         }
 
         show_trunks(&this_disp);
@@ -36,10 +41,11 @@ static void show_tree(struct tree_node *root, struct trunk *prev, int is_left)
         else
                 printf("%d\n", root->key);
 
-        if (prev) prev->str = prev_str;
+        if ( prev )
+                prev->str = prev_str;
         this_disp.str = "   |";
 
         show_tree(root->left, &this_disp, 0);
-        if (!prev) puts("");
+        if ( !prev )
+                puts("");
 }
-