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bug#258: [22.2]: visiting boost_1_35_0.tar.bz2 causes an error


From: Stefan Monnier
Subject: bug#258: [22.2]: visiting boost_1_35_0.tar.bz2 causes an error
Date: Tue, 20 May 2008 14:42:05 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux)

> This report is going to be annoying, because
> http://downloads.sourceforge.net/boost/boost_1_35_0.tar.bz2?modtime=1206
> 795398&big_mirror=0 is a 22M file.  Sorry.  This also applies to 22.1.

> If I download the file, then visiting it under emacs -Q gives me:

> Debugger entered--Lisp error: (args-out-of-range -256589311 -256588799)

The problem appears to be that the file uses a format that tar-mode.el
doesn't understand: the errors shows up with the first filename that is
longer than 100 chars.
It appears to be some GNU tar format whoe description I cannot
find anywhere.  Basically, the block that is supposed to describe the
file is replaced by a block that contains the complete filename (padded
to 512 with \0 bytes) and is followed by the actual block:

ELISP> (buffer-substring pos (+ pos 512))
"boost_1_35_0/doc/html/boost/xpressive/op/insert/result_This(Cont,It,Size,Value),typename
 disable_if_ is_integral_ UNCVREF(It)_ 
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@"
ELISP> (buffer-substring (+ pos 512) (+ pos 1024))
"boost_1_35_0/doc/html/boost/xpressive/op/insert/result_This(Cont,It,Size,Value),typename
 address@hidden@address@hidden@address@hidden@ 
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@ustar
  
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@"
ELISP> 


        Stefan






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