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From: Eric Sosman <esosman@comcast-dot-net.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: Grief!
Date: Mon, 15 Sep 2014 17:32:30 -0400
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On 9/15/2014 5:09 PM, Knute Johnson wrote:
> On 9/14/2014 18:51, Arne Vajhøj wrote:
>> On 9/14/2014 9:39 PM, Knute Johnson wrote:
>>> Two days of grief, my manifest file with only one line in it:
>>>
>>> Permissions:         sandbox
>>>
>>> Java kept rejecting the app as insecure.
>>
>> Unsigned Applet and newer Java versions?
>>
>> Arne
>
> It's a signed Java Web Start app that runs in the sandbox.  I have a
> code signing cert and the file is signed.  The problem was the blank
> spaces between 'Permissions:' and 'sandbox', only one space is
> permissible between the colon and the key or value.  I couldn't find
> anything in the docs but that is the way it works.  I've never seen a
> properties file or any other pair file that wouldn't ignore blank space.

     Only one space?  Sounds moronic.[*]  After some digging, though, I
found these syntax productions in Oracle's "JAR File Specification" at
<http://docs.oracle.com/javase/7/docs/technotes/guides/jar/jar.html#JAR_Manifest>:

	header:  name : value
	...
	value:   SPACE *otherchar newline *continuation

So, the single SPACE character is actually a documented requirement of
the syntax, odd[*] as that may seem.

     [*] Maybe not completely moronic nor totally odd, though.  The
syntax has no quoting convention, so if the parser were to collapse a
run of spaces together there'd be no way to specify a space as the
first character of a value -- and what a huge loss THAT would be!

-- 
esosman@comcast-dot-net.invalid