Implement the first steps of equation parsing from within libmdoc.

This consists of a shim around the text parser that calls out to libroff
if equation components exist on the line.  Right now this will do
nothing, as the equation delimiter always returns nil.

1 files changed, 5 insertions, 1 deletions

diff --git a/tbl.c b/tbl.c
index 10e11ca4..5af3ccf1 100644
--- a/tbl.c
+++ b/tbl.c
@@ -154,8 +154,12 @@ tbl_span(struct tbl_node *tbl)
 }
 
 void
-tbl_end(struct tbl_node *tbl)
+tbl_end(struct tbl_node **tblp)
 {
+	struct tbl_node	*tbl;
+
+	tbl = *tblp;
+	*tblp = NULL;
 
 	if (NULL == tbl->first_span || NULL == tbl->first_span->first)
 		mandoc_msg(MANDOCERR_TBLNODATA, tbl->parse,