[bug #39078] The method -[NSScanner scanUpToString:intoString] can't find a pattern at the very start of a string

[Sergey Golovin]

URL:
  <http://savannah.gnu.org/bugs/?39078>

                 Summary: The method -[NSScanner scanUpToString:intoString]
can't find a pattern at the very start of a string
                 Project: GNUstep
            Submitted by: svg
            Submitted on: Пнд 27 Май 2013 14:33:33
                Category: Base/Foundation
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

Consider the following code:
------------------------------------------------------------
  NSString *str = @"/** comment */";
  NSScanner *scan;
  NSString *comment = nil;

  scan = [NSScanner scannerWithString: str];

  if([scan scanUpToString: @"/**" intoString: &comment] &&
     [comment isEqualToString: @""])
    {
       NSLog(@"OK");
    }
  else
    {
       NSLog(@"FAIL");
    }
------------------------------------------------------------

Here the pattern @"/**" at the start of the 'str' is never found
by the 'scan'.

I'm guessing (from a practical point of view because i have no
access to OS X) it should return YES and populate 'comment' by 
an empty string. 

In the case i'm right the test is attached.



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File Attachments:


-------------------------------------------------------
Date: Пнд 27 Май 2013 14:33:33  Name: test02.m  Size: 705B   By: svg

<http://savannah.gnu.org/bugs/download.php?file_id=28186>

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