--- output.orig.c	2018-03-02 11:40:01.460960523 +0800
+++ output.c	2018-03-02 11:51:13.060960442 +0800
@@ -18,6 +18,7 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <ctype.h>
 
 #include "../ast.h"
 #include "../xalloc.h"
@@ -40,6 +41,15 @@
 
 static void node_walk_render(const struct node *n, struct render_context *ctx);
 
+char *rtrim(char *s) {
+  int n = strlen(s);
+  while(--n>=0 && ( iscntrl(s[n]) || isspace(s[n]) || isblank(s[n])))
+    ;
+  s[++n] = 0;
+  return s;
+}
+
+
 static int
 bprintf(struct render_context *ctx, const char *fmt, ...)
 {
@@ -486,7 +496,7 @@
 			rrd_pretty(&rrd);
 		}
 
-		printf("%s:\n", p->name);
+		printf("%s:\n", rtrim(p->name));
 
 		{
 			struct render_context ctx;
@@ -519,7 +529,7 @@
 			node_walk_render(rrd, &ctx);
 
 			for (i = 0; i < h; i++) {
-				printf("    %s\n", ctx.lines[i]);
+				printf("    %s\n", rtrim(ctx.lines[i]));
 				free(ctx.lines[i]);
 			}