Let's try this. It's BUGGERED.

1 files changed, 166 insertions, 0 deletions

diff --git a/src/cmd/eqn/e.h b/src/cmd/eqn/e.h
new file mode 100644
index 00000000..70c47023
--- /dev/null
+++ b/src/cmd/eqn/e.h
@@ -0,0 +1,166 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+enum charclass {
+	OTHER, OLET, ILET, DIG, LPAR, RPAR, SLASH, PLUS, ILETF, ILETJ, VBAR,
+	NONE, LAST
+};
+extern int class[LAST][LAST];
+
+#define	dprintf		if (dbg) printf
+#define	max(x,y)	(((x) >= (y)) ? (x) : (y))	/* beware of side effects */
+#define	min(x,y)	(((x) <= (y)) ? (x) : (y))
+
+extern	char	errbuf[200];
+extern	char	*cmdname;
+#define	ERROR	sprintf(errbuf,
+#define	FATAL	), error(1, errbuf)
+#define	WARNING	), error(0, errbuf)
+#define	SYNTAX	), yyerror(errbuf)
+
+#define	ROM	'1'
+#define	ITAL	'2'
+#define	BLD	'3'
+#define	BDIT	'4'
+
+#define	DEFGAP	-999	/* default gap in piles */
+
+extern int	dbg;
+extern int	ct;
+extern int	lp[];
+extern int	used[];		/* available registers */
+extern int	ps;		/* dflt init pt size */
+extern int	deltaps;	/* default change in ps */
+extern int	dps_set;	/* 1 => -p option used */
+extern int	gsize;		/* global size */
+extern int	ft;		/* default font */
+extern int	display;	/* 1 => inline, 0 => .EQ/.EN */
+extern int	synerr;		/* 1 if syntax error in this eqn */
+
+extern char	*typesetter;	/* typesetter name for -T... */
+extern int	minsize;	/* min size it can print */
+extern int	ttype;		/* actual type of typesetter: */
+
+#define	DEVCAT	1
+#define	DEV202	2
+#define	DEVAPS	3
+#define	DEVPOST	4
+
+extern double	eht[];
+extern double	ebase[];
+extern int	lfont[];
+extern int	rfont[];
+extern int	lclass[];
+extern int	rclass[];
+extern int	yyval;
+extern int	yylval;
+extern int	eqnreg;
+extern double	eqnht;
+extern int	lefteq, righteq;
+extern int	markline;	/* 1 if this EQ/EN contains mark or lineup */
+
+#define	TBLSIZE	100
+
+typedef struct s_tbl {
+	char	*name;		/* e.g., "max" or "sum" */
+	char	*cval;		/* e.g., "\\f1max\\fP" */
+	int	ival;		/*    or SUM */
+	struct s_tbl *next;
+} tbl;
+
+extern	char	*spaceval;	/* use in place of normal \x (for pic) */
+
+#define	String	01
+#define	Macro	02
+#define	File	04
+#define	Char	010
+#define	Free	040
+
+typedef struct infile {
+	FILE	*fin;
+	char	*fname;
+	int	lineno;
+} Infile;
+
+typedef struct {	/* input source */
+	int	type;	/* Macro, String, File */
+	char	*sp;	/* if String or Macro */
+} Src;
+
+extern	Src	src[], *srcp;	/* input source stack */
+
+#define	MAXARGS	20
+typedef struct {	/* argument stack */
+	char	*argstk[MAXARGS];	/* pointers to args */
+	char	*argval;	/* points to space containing args */
+} Arg;
+
+typedef struct {	/* font number and name */
+	int	ft;
+	char	name[10];
+} Font;
+
+extern	Font	ftstack[];
+extern	Font	*ftp;
+
+extern	int	szstack[];
+extern	int	nszstack;
+
+extern	Infile	infile[10];
+extern	Infile	*curfile;
+
+extern	tbl	*lookup(tbl **tblp, char *name);
+extern	void	install(tbl **tblp, char *name, char *cval, int ival);
+extern	tbl	*keytbl[], *deftbl[], *restbl[], *ftunetbl[];
+
+extern	int	salloc(void);
+extern	void	sfree(int);
+extern	void	nrwid(int, int, int);
+extern	char	*ABSPS(int);
+extern	char	*DPS(int, int);
+extern	int	EFFPS(int);
+extern	double	EM(double, int);
+extern	double	REL(double, int);
+extern	char	*pad(int);
+extern	void	getstr(char *, int);
+extern	char	*strsave(char *);
+
+extern	int	input(void);
+extern	int	unput(int);
+extern	void	pbstr(char *);
+extern	void	error(int, char *);
+extern	void	yyerror(char *);
+
+extern	void	diacrit(int, int);
+extern	void	eqnbox(int, int, int);
+extern	void	setfont(char *);
+extern	void	font(int, int);
+extern	void	globfont(void);
+extern	void	fatbox(int);
+extern	void	fromto(int, int, int);
+extern	void	funny(int);
+extern	void	integral(int, int, int);
+extern	void	setintegral(void);
+extern	void	pushsrc(int, char *);
+extern	void	popsrc(void);
+extern	void	putout(int);
+extern	void	text(int, char *);
+extern void subsup(int, int, int);
+extern void bshiftb(int, int, int);
+extern void shift2(int, int, int);
+extern void setsize(char *);
+extern void size(int, int);
+extern void globsize(void);
+#define sqrt esqrt
+extern void sqrt(int);
+extern void text(int, char *);
+extern void boverb(int, int);
+extern void lineup(int);
+extern void mark(int);
+extern void paren(int, int, int);
+extern void move(int, int, int);
+extern void pile(int);
+extern int startcol(int);
+extern void column(int, int);
+extern void matrix(int);