Provide implementations of `define', `set', and `unset'.

Tie them into the stream of data.
Document these appropriate, bringing in the grammar as defined by the
original eqn manual (Kernighan/Richie).

1 files changed, 3 insertions, 0 deletions

diff --git a/mandoc.h b/mandoc.h
index f545be22..f83154aa 100644
--- a/mandoc.h
+++ b/mandoc.h
@@ -109,6 +109,9 @@ enum	mandocerr {
 
 	MANDOCERR_ERROR, /* ===== start of errors ===== */
 
+	/* related to equations */
+	MANDOCERR_EQNARGS, /* bad equation macro arguments */
+
 	/* related to tables */
 	MANDOCERR_TBL, /* bad table syntax */
 	MANDOCERR_TBLOPT, /* bad table option */