Add initial EQN support to mandoc. This parses, then throws away, data

between EQ and EN roff blocks.  EQN is different from TBL in that data
after .EQ is unilaterally considered an equation until an .EN.  Thus,
there's no need to jump through hoops in having table spans and so on.
This is ONLY the parse code framework in libroff.  EQN is not yet passed
into the backends.

1 files changed, 5 insertions, 0 deletions

diff --git a/mandoc.h b/mandoc.h
index 704ec745..56d45ebc 100644
--- a/mandoc.h
+++ b/mandoc.h
@@ -267,6 +267,11 @@ struct	tbl_span {
 	struct tbl_span	 *next;
 };
 
+struct	eqn {
+	size_t		  sz;
+	char		 *data;
+};
+
 /*
  * Available registers (set in libroff, accessed elsewhere).
  */