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- Author: Adam Buchbinder <adam.buchbinder@gmail.com>
- Description: Fixing false matches against Z-machine pattern. A particular MP3 file as well as a particular file from texlive-omega match the pattern for Z-machine games. Make the pattern a bit more restrictive to get rid of the false matches. (Closes: #499748)
- diff -Naurp file.orig/magic/Magdir/adventure file/magic/Magdir/adventure
- --- file.orig/magic/Magdir/adventure 2009-03-21 09:20:03.000000000 +0000
- +++ file/magic/Magdir/adventure 2009-03-21 09:27:01.000000000 +0000
- @@ -17,17 +17,23 @@
- #------------------------------------------------------------------------------
- # Z-machine: file(1) magic for Z-machine binaries.
- #
- -# This will match ${TEX_BASE}/texmf/omega/ocp/char2uni/inbig5.ocp which
- -# appears to be a version-0 Z-machine binary.
- +# Updated by Adam Buchbinder <adam.buchbinder@gmail.com>
- #
- -# The (false match) message is to correct that behavior. Perhaps it is
- -# not needed.
- +# The first byte is the Z-machine revision; it is always between 1 and 8. We
- +# had false matches (for instance, inbig5.ocp from the Omega TeX extension as
- +# well as an occasional MP3 file), so we sanity-check the version number.
- #
- -16 belong&0xfe00f0f0 0x3030 Infocom game data
- ->0 ubyte 0 (false match)
- ->0 ubyte >0 (Z-machine %d,
- ->>2 ubeshort x Release %d /
- ->>18 string >\0 Serial %.6s)
- +# It might be possible to sanity-check the release number as well, as it seems
- +# (at least in classic Infocom games) to always be a relatively small number,
- +# always under 150 or so, but as this isn't rigorous, we'll wait on that until
- +# it becomes clear that it's needed.
- +#
- +0 ubyte >0
- +>0 ubyte <9
- +>>16 belong&0xfe00f0f0 0x3030 Infocom game data
- +>>>0 ubyte x (Z-machine %d,
- +>>>>2 ubeshort x Release %d /
- +>>>>18 string >\0 Serial %.6s)
-
- #------------------------------------------------------------------------------
- # Glulx: file(1) magic for Glulx binaries.
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