===================================================================
RCS file: /cvs/mandoc/mandoc.h,v
retrieving revision 1.189
retrieving revision 1.194
diff -u -p -r1.189 -r1.194
--- mandoc/mandoc.h	2015/01/26 18:42:30	1.189
+++ mandoc/mandoc.h	2015/01/30 17:32:16	1.194
@@ -1,4 +1,4 @@
-/*	$Id: mandoc.h,v 1.189 2015/01/26 18:42:30 schwarze Exp $ */
+/*	$Id: mandoc.h,v 1.194 2015/01/30 17:32:16 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
@@ -134,24 +134,18 @@ enum	mandocerr {
 
 	MANDOCERR_ERROR, /* ===== start of errors ===== */
 
-	/* related to equations */
-	MANDOCERR_EQNNSCOPE, /* unexpected equation scope closure*/
-	MANDOCERR_EQNSCOPE, /* equation scope open on exit */
-	MANDOCERR_EQNBADSCOPE, /* overlapping equation scopes */
-	MANDOCERR_EQNEOF, /* unexpected end of equation */
-
 	/* related to tables */
 	MANDOCERR_TBLOPT_ALPHA, /* non-alphabetic character in tbl options */
 	MANDOCERR_TBLOPT_BAD, /* skipping unknown tbl option: option */
-	MANDOCERR_TBLOPT_NOARG, /* missing tbl option argument */
-	MANDOCERR_TBLOPT_ARGSZ, /* wrong tbl option argument size */
+	MANDOCERR_TBLOPT_NOARG, /* missing tbl option argument: option */
+	MANDOCERR_TBLOPT_ARGSZ, /* wrong tbl option argument size: option */
 	MANDOCERR_TBLLAYOUT_NONE, /* empty tbl layout */
 	MANDOCERR_TBLLAYOUT_CHAR, /* invalid character in tbl layout: char */
 	MANDOCERR_TBLLAYOUT_PAR, /* unmatched parenthesis in tbl layout */
-	MANDOCERR_TBLNODATA, /* no table data cells specified */
-	MANDOCERR_TBLIGNDATA, /* ignore data in cell */
-	MANDOCERR_TBLBLOCK, /* data block still open */
-	MANDOCERR_TBLEXTRADAT, /* ignoring extra data cells */
+	MANDOCERR_TBLDATA_NONE, /* tbl without any data cells */
+	MANDOCERR_TBLDATA_SPAN, /* ignoring data in spanned tbl cell: data */
+	MANDOCERR_TBLDATA_EXTRA, /* ignoring extra tbl data cells: data */
+	MANDOCERR_TBLDATA_BLK, /* data block open at end of tbl: macro */
 
 	/* related to document structure and macros */
 	MANDOCERR_FILE, /* cannot open file */
@@ -186,9 +180,9 @@ enum	mandocerr {
 	MANDOCERR_TOOLARGE, /* input too large */
 	MANDOCERR_CHAR_UNSUPP, /* unsupported control character: number */
 	MANDOCERR_REQ_UNSUPP, /* unsupported roff request: request */
+	MANDOCERR_TBLOPT_EQN, /* eqn delim option in tbl: arg */
 	MANDOCERR_TBLLAYOUT_MOD, /* unsupported tbl layout modifier: m */
 	MANDOCERR_TBLMACRO, /* ignoring macro in table: macro */
-	MANDOCERR_TBLEQN, /* eqn in tbl */
 
 	MANDOCERR_MAX
 };
@@ -206,20 +200,10 @@ struct	tbl_opts {
 #define	TBL_OPT_NOSPACE	 (1 << 6)
 #define	TBL_OPT_NOWARN	 (1 << 7)
 	int		  cols; /* number of columns */
+	int		  lvert; /* width of left vertical line */
+	int		  rvert; /* width of right vertical line */
 };
 
-/*
- * The head of a table specifies all of its columns.  When formatting a
- * tbl_span, iterate over these and plug in data from the tbl_span when
- * appropriate, using tbl_cell as a guide to placement.
- */
-struct	tbl_head {
-	int		  ident; /* 0 <= unique id < cols */
-	int		  vert; /* width of preceding vertical line */
-	struct tbl_head	 *next;
-	struct tbl_head	 *prev;
-};
-
 enum	tbl_cellt {
 	TBL_CELL_CENTRE, /* c, C */
 	TBL_CELL_RIGHT, /* r, R */
@@ -238,9 +222,10 @@ enum	tbl_cellt {
  */
 struct	tbl_cell {
 	struct tbl_cell	 *next;
-	int		  vert; /* width of preceding vertical line */
+	int		  vert; /* width of subsequent vertical line */
 	enum tbl_cellt	  pos;
 	size_t		  spacing;
+	int		  col; /* column number, starting from 0 */
 	int		  flags;
 #define	TBL_CELL_TALIGN	 (1 << 0) /* t, T */
 #define	TBL_CELL_BALIGN	 (1 << 1) /* d, D */
@@ -250,7 +235,6 @@ struct	tbl_cell {
 #define	TBL_CELL_UP	 (1 << 5) /* u, U */
 #define	TBL_CELL_WIGN	 (1 << 6) /* z, Z */
 #define	TBL_CELL_WMAX	 (1 << 7) /* x, X */
-	struct tbl_head	 *head;
 };
 
 /*
@@ -260,7 +244,7 @@ struct	tbl_row {
 	struct tbl_row	 *next;
 	struct tbl_cell	 *first;
 	struct tbl_cell	 *last;
-	int		  vert; /* trailing vertical line */
+	int		  vert; /* width of left vertical line */
 };
 
 enum	tbl_datt {
@@ -295,16 +279,13 @@ enum	tbl_spant {
  */
 struct	tbl_span {
 	struct tbl_opts	 *opts;
-	struct tbl_head	 *head;
 	struct tbl_row	 *layout; /* layout row */
 	struct tbl_dat	 *first;
 	struct tbl_dat	 *last;
+	struct tbl_span	 *prev;
+	struct tbl_span	 *next;
 	int		  line; /* parse line */
-	int		  flags;
-#define	TBL_SPAN_FIRST	 (1 << 0)
-#define	TBL_SPAN_LAST	 (1 << 1)
 	enum tbl_spant	  pos;
-	struct tbl_span	 *next;
 };
 
 enum	eqn_boxt {