Fix trailing spaces behaviour for binary collation.

mysql-test/r/ctype_utf8.result

@@ -79,6 +79,21 @@ SELECT 'a\t' < 'a';
 SELECT 'a\t' < 'a ';
 'a\t' < 'a '
 1
+SELECT 'a' = 'a ' collate utf8_bin;
+'a' = 'a ' collate utf8_bin
+1
+SELECT 'a\0' < 'a' collate utf8_bin;
+'a\0' < 'a' collate utf8_bin
+1
+SELECT 'a\0' < 'a ' collate utf8_bin;
+'a\0' < 'a ' collate utf8_bin
+1
+SELECT 'a\t' < 'a' collate utf8_bin;
+'a\t' < 'a' collate utf8_bin
+1
+SELECT 'a\t' < 'a ' collate utf8_bin;
+'a\t' < 'a ' collate utf8_bin
+1
 CREATE TABLE t1 (a char(10) character set utf8 not null);
 INSERT INTO t1 VALUES ('a'),('a\0'),('a\t'),('a ');
 SELECT hex(a),STRCMP(a,'a'), STRCMP(a,'a ') FROM t1;

mysql-test/t/ctype_utf8.test

@@ -46,6 +46,15 @@ SELECT 'a\0' < 'a ';
 SELECT 'a\t' < 'a';
 SELECT 'a\t' < 'a ';
 
+#
+# The same for binary collation
+#
+SELECT 'a' = 'a ' collate utf8_bin;
+SELECT 'a\0' < 'a' collate utf8_bin;
+SELECT 'a\0' < 'a ' collate utf8_bin;
+SELECT 'a\t' < 'a' collate utf8_bin;
+SELECT 'a\t' < 'a ' collate utf8_bin;
+
 CREATE TABLE t1 (a char(10) character set utf8 not null);
 INSERT INTO t1 VALUES ('a'),('a\0'),('a\t'),('a ');
 SELECT hex(a),STRCMP(a,'a'), STRCMP(a,'a ') FROM t1;