Initial class construction

Git/usr/share/vim/vim81/syntax/xxd.vim

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+" Vim syntax file
+" Language:		bin using xxd
+" Maintainer:	Charles E. Campbell <NdrOchipS@PcampbellAfamily.Mbiz>
+" Last Change:	Aug 31, 2016
+" Version:		10
+" Notes:		use :help xxd   to see how to invoke it
+" URL:	http://www.drchip.org/astronaut/vim/index.html#SYNTAX_XXD
+
+" quit when a syntax file was already loaded
+if exists("b:current_syntax")
+  finish
+endif
+
+syn match xxdAddress			"^[0-9a-f]\+:"		contains=xxdSep
+syn match xxdSep	contained	":"
+syn match xxdAscii				"  .\{,16\}\r\=$"hs=s+2	contains=xxdDot
+syn match xxdDot	contained	"[.\r]"
+
+" Define the default highlighting.
+if !exists("skip_xxd_syntax_inits")
+
+ hi def link xxdAddress	Constant
+ hi def link xxdSep		Identifier
+ hi def link xxdAscii	Statement
+
+endif
+
+let b:current_syntax = "xxd"
+
+" vim: ts=4