Fix for BUG#5686 - #1034 - Incorrect key file for table - only utf8

myisam/ft_parser.c:
  word->len calculation correction.
mysql-test/r/fulltext.result:
  Test case for bug#5686.
mysql-test/t/fulltext.test:
  Test case for bug#5686.

myisam/ft_parser.c

@@ -188,8 +188,10 @@ byte ft_simple_get_word(CHARSET_INFO *cs, byte **start, byte *end,
     for (word->pos=doc; doc<end; length++, mbl=my_mbcharlen(cs, *(uchar *)doc), doc+=(mbl ? mbl : 1))
       if (true_word_char(cs,*doc))
         mwc= 0;
-      else if (!misc_word_char(*doc) || mwc++)
+      else if (!misc_word_char(*doc) || mwc)
         break;
+      else
+        mwc++;
 
     word->len= (uint)(doc-word->pos) - mwc;
 

mysql-test/r/fulltext.result

@@ -428,4 +428,8 @@ REPAIR TABLE t1;
 Table	Op	Msg_type	Msg_text
 test.t1	repair	status	OK
 SET myisam_repair_threads=@@global.myisam_repair_threads;
+INSERT INTO t1 VALUES('testword\'\'');
+SELECT a FROM t1 WHERE MATCH a AGAINST('testword' IN BOOLEAN MODE);
+a
+testword''
 DROP TABLE t1;

mysql-test/t/fulltext.test

@@ -348,6 +348,12 @@ INSERT INTO t1 VALUES('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb');
 SET myisam_repair_threads=2;
 REPAIR TABLE t1;
 SET myisam_repair_threads=@@global.myisam_repair_threads;
+
+#
+# BUG#5686 - #1034 - Incorrect key file for table - only utf8
+#
+INSERT INTO t1 VALUES('testword\'\'');
+SELECT a FROM t1 WHERE MATCH a AGAINST('testword' IN BOOLEAN MODE);
 DROP TABLE t1;
 
 # End of 4.1 tests