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+
+#------------------------------------------------------------------------------
+# $File: sereal,v 1.3 2015/02/05 19:14:45 christos Exp $
+# sereal: file(1) magic the Sereal binary serialization format
+#
+# From: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
+#
+# See the specification of the format at
+# https://github.com/Sereal/Sereal/blob/master/sereal_spec.pod#document-header-format
+#
+# I'd have liked to do the byte&0xF0 matching against 0, 1, 2 ... by
+# doing (byte&0xF0)>>4 here, but unfortunately that's not
+# supported. So when we print out a message about an unknown format
+# we'll print out e.g. 0x30 instead of the more human-readable
+# 0x30>>4.
+#
+# See https://github.com/Sereal/Sereal/commit/35372ae01d in the
+# Sereal.git repository for test Sereal data.
+0 name sereal
+>4 byte&0x0F x (version %d,
+>4 byte&0xF0 0x00 uncompressed)
+>4 byte&0xF0 0x10 compressed with non-incremental Snappy)
+>4 byte&0xF0 0x20 compressed with incremental Snappy)
+>4 byte&0xF0 >0x20 unknown subformat, flag: %d>>4)
+
+0 string/b \=srl Sereal data packet
+!:mime application/sereal
+>&0 use sereal
+0 string/b \=\xF3rl Sereal data packet
+!:mime application/sereal
+>&0 use sereal
+0 string/b \=\xC3\xB3rl Sereal data packet, UTF-8 encoded
+!:mime application/sereal
+>&0 use sereal
+