Trash spec: wrapping up

[Alexander Larsson]

On Sat, 2004-11-06 at 00:20 +0100, David Faure wrote:
> On Tuesday 02 November 2004 10:48, you wrote:
> > On Tue, 2004-11-02 at 10:04 +0300, Mikhail Ramendik wrote:
> > > Alexander Larsson wrote:
> > > 
> > > > Thus, i propose that we store the byte string in escaped form in the
> > > > trash info file. The normal desktop file escaping method doesn't allow
> > > > encoding of any byte value, so we can't use that. To avoid multiple
> > > > escape/unescape problems when using existing desktop parsers we
> > > > shouldn't extend that method. Instead i propose that we use url-style
> > > > escaping. 
> > > 
> > > What's the name of the standard that describes URL-style escaping and is 
> > > supported in Gnome and KDE? We need to redference that in the text.
> > 
> > Its described in RFC 2396, section 2.4.1. We still have to decide
> > exactly what characters to escape though. I think a good set of
> > characters to not escape is the "unreserved characters" class in the
> > RFC, plus "/".
> > 
> > That would mean everything is escaped except:
> > 'a' - 'z', 'A'- 'Z', '0' - '9', 
> > '-', '_', '.' '!', '~', '*', ''', '(', ')'
> > '/'
>  
> The shared code for this in KDE (i.e. KURL) refers to
>  RFC 1738, 2.2. URL Character Encoding Issues (pp. 3-4)
> and encodes everything <=32, >=127, or among
> @<>#"&%?={}|^~[]'`\:+
> 
> This conflicts on ~ and ' ... but does it matter? If one implementation
> encodes '~' and the other doesn't, this is no problem, they can both 
> read each other anyway.
> 
> Given the Key=Value / Key[fr]=Value format, I think the most important is to 
> make sure that '=', '[', ']', control characters (<32) and non-ascii (>=127) 
> are escaped, the rest doesn't matter.
> 
> If an implementation wants to escape 'a'..'z' it will look ugly, but it will still
> be interoperable :)

Sure, the main need is to define the minimal set that has to be escaped.
Your set looks fine to me.

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 Alexander Larsson                                            Red Hat, Inc 
                   alexl at redhat.com    alla at lysator.liu.se 
He's a war-weary gay paramedic in a wheelchair. She's a transdimensional 
wisecracking hooker looking for love in all the wrong places. They fight 
crime!