[bug #17112] Unarchiving some (not all) XML-based nibs using NSKeyedUnarchiver fails

[Gregory John Casamento]

Follow-up Comment #1, bug #17112 (project gnustep):

The problem with the:

"2006-07-15 13:58:38.550 Gorm[97219] Unable to parse XML archive as the base
library was not configured with libxml2 support."

is due to a missing include in the NSKeyedUnarchiver.m file.  It should
include config.h.  This eliminates that problem.   The other issue is that
the XML file contains a "^[" (ESCAPE) character as indicated by this part of
the error:

"at line: 8209 column: 11 ... PCDATA invalid Char value 27"

ESCAPE is illegal in XML and should be represented by an XML entity, if the
XML has been canonicalized.  Apparently Apple's XML isn't.   This is what the
parser is tripping over at that point. 

I am testing a fix for the first issue, which I will commit shortly.   I'm
not sure how to handle the second issue.

GJC

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