Do not handle vertical lines as additional tbl(7) columns,

instead save their properties with the following column.
This simplifies layout parsing and saves a lot of code
related to column handling.

At output time, print all white space and vertical lines
separating columns before printing the following column,
and none after printing the preceding column, considerably
simplifying white space handling and width calculations.

No functional change, but it saves 150 lines of code,
and it allows the next patch to tbl_term.c, tbl_literal().

"Please check them in and I'll look into them later!" kristaps@

1 files changed, 2 insertions, 9 deletions

diff --git a/mandoc.h b/mandoc.h
index a24db913..bd7dfdc1 100644
--- a/mandoc.h
+++ b/mandoc.h
@@ -175,20 +175,14 @@ struct	tbl {
 	int		  cols; /* number of columns */
 };
 
-enum	tbl_headt {
-	TBL_HEAD_DATA, /* plug in data from tbl_dat */
-	TBL_HEAD_VERT, /* vertical spacer */
-	TBL_HEAD_DVERT  /* double-vertical spacer */
-};
-
 /*
  * 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 {
-	enum tbl_headt	  pos;
 	int		  ident; /* 0 <= unique id < cols */
+	int		  vert; /* width of preceding vertical line */
 	struct tbl_head	 *next;
 	struct tbl_head	 *prev;
 };
@@ -203,8 +197,6 @@ enum	tbl_cellt {
 	TBL_CELL_DOWN, /* ^ */
 	TBL_CELL_HORIZ, /* _, - */
 	TBL_CELL_DHORIZ, /* = */
-	TBL_CELL_VERT, /* | */
-	TBL_CELL_DVERT, /* || */
 	TBL_CELL_MAX
 };
 
@@ -213,6 +205,7 @@ enum	tbl_cellt {
  */
 struct	tbl_cell {
 	struct tbl_cell	 *next;
+	int		  vert; /* width of preceding vertical line */
 	enum tbl_cellt	  pos;
 	size_t		  spacing;
 	int		  flags;