Add handling for `T&', which restarts a table except for its options.

3 files changed, 25 insertions, 0 deletions

diff --git a/libroff.h b/libroff.h
index 1ab4cd49..05889954 100644
--- a/libroff.h
+++ b/libroff.h
@@ -84,6 +84,7 @@ struct	tbl {
 	(*(tblp)->msg)((type), (tblp)->data, (line), (col), NULL)
 
 struct tbl	*tbl_alloc(void *, mandocmsg);
+void		 tbl_restart(struct tbl *);
 void		 tbl_free(struct tbl *);
 void		 tbl_reset(struct tbl *);
 enum rofferr 	 tbl_read(struct tbl *, int, const char *, int);
diff --git a/roff.c b/roff.c
index bf1dbf0c..a481619e 100644
--- a/roff.c
+++ b/roff.c
@@ -59,6 +59,7 @@ enum	rofft {
 	ROFF_tr,
 	ROFF_TS,
 	ROFF_TE,
+	ROFF_T_,
 	ROFF_cblock,
 	ROFF_ccond, /* FIXME: remove this. */
 	ROFF_USERDEF,
@@ -143,6 +144,7 @@ static	void		 roff_setstr(struct roff *,
 static	enum rofferr	 roff_so(ROFF_ARGS);
 static	enum rofferr	 roff_TE(ROFF_ARGS);
 static	enum rofferr	 roff_TS(ROFF_ARGS);
+static	enum rofferr	 roff_T_(ROFF_ARGS);
 static	enum rofferr	 roff_userdef(ROFF_ARGS);
 
 /* See roff_hash_find() */
@@ -175,6 +177,7 @@ static	struct roffmac	 roffs[ROFF_MAX] = {
 	{ "tr", roff_line_ignore, NULL, NULL, 0, NULL },
 	{ "TS", roff_TS, NULL, NULL, 0, NULL },
 	{ "TE", roff_TE, NULL, NULL, 0, NULL },
+	{ "T&", roff_T_, NULL, NULL, 0, NULL },
 	{ ".", roff_cblock, NULL, NULL, 0, NULL },
 	{ "\\}", roff_ccond, NULL, NULL, 0, NULL },
 	{ NULL, roff_userdef, NULL, NULL, 0, NULL },
@@ -1123,6 +1126,19 @@ roff_TE(ROFF_ARGS)
 
 /* ARGSUSED */
 static enum rofferr
+roff_T_(ROFF_ARGS)
+{
+
+	if (NULL == r->tbl)
+		(*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL);
+	else
+		tbl_restart(r->tbl);
+
+	return(ROFF_IGN);
+}
+
+/* ARGSUSED */
+static enum rofferr
 roff_TS(ROFF_ARGS)
 {
 
diff --git a/tbl.c b/tbl.c
index 537c7182..db468617 100644
--- a/tbl.c
+++ b/tbl.c
@@ -120,3 +120,11 @@ tbl_reset(struct tbl *tbl)
 	tbl_init(tbl);
 }
 
+void
+tbl_restart(struct tbl *tbl)
+{
+
+	tbl_clear(tbl);
+	tbl->part = TBL_PART_LAYOUT;
+}
+