From 1c38e1790aa107049708f35db5ecb892650e6296 Mon Sep 17 00:00:00 2001
From: "jani@rhols221.adsl.netsonic.fi" <>
Date: Mon, 30 Jun 2003 15:49:29 +0300
Subject: [PATCH] Made check for structured option handling more robust and
 faster. Earlier it could have failed in some special cases.

---
 mysys/my_getopt.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/mysys/my_getopt.c b/mysys/my_getopt.c
index 07f4f306198..83ba8b98843 100644
--- a/mysys/my_getopt.c
+++ b/mysys/my_getopt.c
@@ -458,17 +458,19 @@ int handle_options(int *argc, char ***argv,
 
 static char *check_struct_option(char *cur_arg, char *key_name)
 {
-  char *ptr, *ptr2;
+  char *ptr, *end;
 
-  ptr= strcend(cur_arg, '.');
-  ptr2= strcend(cur_arg, '=');
+  ptr= strcend(cur_arg + 1, '.'); // Skip the first character
+  end= strcend(cur_arg, '=');
 
   /* 
-     Minimum length for a struct option is 3 (--a.b)
-     If the (first) dot is after an equal sign, then it is part
+     If the first dot is after an equal sign, then it is part
      of a variable value and the option is not a struct option.
+     Also, if the last character in the string before the ending
+     NULL, or the character right before equal sign is the first
+     dot found, the option is not a struct option.
   */
-  if (strlen(ptr) >= 3 && ptr2 - ptr > 0)
+  if (end - ptr > 1)
   {
     uint len= ptr - cur_arg;
     strnmov(key_name, cur_arg, len);