Make width calculations occur within tbl_term.c, not tbl.c. This allows

for front-ends to make decisions about widths, not the back-end.

To pull this off, first make each tbl_head contain a unique index value
(0 <= index < total tbl_head elements) and remove the tbl_calc() routine
from the back-end.

Then, when encountering the first tbl_span in the front-end, dynamically
create an array of configurations (termp_tbl) keyed on each tbl_head's
unique index value.  Construct the decimals and widths at this time,
then continue parsing as before.

The termp_tbl and indexes are required because we pass a const tbl AST
into the front-end.

1 files changed, 3 insertions, 3 deletions

diff --git a/mandoc.h b/mandoc.h
index ffd9159f..c4edcf8f 100644
--- a/mandoc.h
+++ b/mandoc.h
@@ -149,7 +149,7 @@ struct	tbl {
 	char		  tab; /* cell-separator */
 	char		  decimal; /* decimal point */
 	int		  linesize;
-	char		  delims[2];
+	char		  delims[2]; /* FIXME: deprecate */
 	int		  opts;
 #define	TBL_OPT_CENTRE	 (1 << 0)
 #define	TBL_OPT_EXPAND	 (1 << 1)
@@ -158,6 +158,7 @@ struct	tbl {
 #define	TBL_OPT_ALLBOX	 (1 << 4)
 #define	TBL_OPT_NOKEEP	 (1 << 5)
 #define	TBL_OPT_NOSPACE	 (1 << 6)
+	int		  cols; /* number of columns */
 };
 
 enum	tbl_headt {
@@ -173,8 +174,7 @@ enum	tbl_headt {
  */
 struct	tbl_head {
 	enum tbl_headt	  pos;
-	int		  width; /* width of cell in fixed chars */
-	int		  decimal; /* decimal point position */
+	int		  ident; /* 0 <= unique id < cols */
 	struct tbl_head	 *next;
 	struct tbl_head	 *prev;
 };