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, 4 insertions, 0 deletions

diff --git a/libmandoc.h b/libmandoc.h
index 7a79257a..c7f0b41d 100644
--- a/libmandoc.h
+++ b/libmandoc.h
@@ -76,6 +76,10 @@ void		 roff_endparse(struct roff *);
 int		 roff_regisset(const struct roff *, enum regs);
 unsigned int	 roff_regget(const struct roff *, enum regs);
 void		 roff_regunset(struct roff *, enum regs);
+char		 roff_eqndelim(const struct roff *);
+void		 roff_openeqn(struct roff *, const char *, 
+			int, int, const char *);
+int		 roff_closeeqn(struct roff *);
 
 const struct tbl_span	*roff_span(const struct roff *);
 const struct eqn	*roff_eqn(const struct roff *);