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2 - 1 
 
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enum{
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	Dump		= 0,		/* Actions must be in order of descending importance */
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	HoldHeader,
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	Hold,
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	SaveLine,
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	Lineoff,			/* Lineoff must be the last action code */
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	Nactions,
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	Nhash		= 128,
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	regexp		= 1,		/* types: literal string or regular expression */
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	string		= 2,
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	MaxHtml		= 256,
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	Hdrsize		= 4096,
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	Bodysize	= 8192,
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	Maxread		= 64*1024,
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};
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typedef struct spat 	Spat;
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typedef struct pattern	Pattern;
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typedef	struct patterns	Patterns;
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struct	spat
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{
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	char*	string;
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	int	len;
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	int	c1;
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	Spat*	next;
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	Spat*	alt;
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};
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struct	pattern{
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	struct	pattern *next;
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	int	action;
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	int	type;
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	Spat*	alt;
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	union{
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		Reprog*	pat;
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		Spat*	spat[Nhash];
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	};
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};
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struct	patterns {
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	char	*action;
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	Pattern	*strings;
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	Pattern	*regexps;
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};
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extern	int	debug;
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extern	Patterns patterns[];
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extern	char	header[];
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extern	char	cmd[];
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extern	void	conv64(char*, char*, char*, int);
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extern	int	convert(char*, char*, char*, int, int);
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extern	void*	Malloc(long n);
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extern	int	matchpat(Pattern*, char*, Resub*);
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extern	char*	readmsg(Biobuf*, int*, int*);
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extern	void	parsepats(Biobuf*);
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extern	void*	Realloc(void*, ulong);
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extern	void	xprint(int, char*, Resub*);