3 files changed, 11 insertions, 1 deletions
diff --git a/buttress.h b/buttress.h
index 062bc37..b059322 100644
--- a/buttress.h
+++ b/buttress.h
@@ -134,6 +134,7 @@ enum {
     err_kwexpected,		       /* paragraph type expects a keyword */
     err_kwtoomany,		       /* paragraph type expects only 1 */
     err_bodyillegal,		       /* paragraph type expects only kws! */
+    err_badparatype,		       /* invalid command at start of para */
     err_badmidcmd,		       /* invalid command in mid-para */
     err_unexbrace,		       /* unexpected brace */
     err_explbr,			       /* expected `{' after command */
diff --git a/error.c b/error.c
index b7eb0d5..01451dd 100644
--- a/error.c
+++ b/error.c
@@ -79,6 +79,14 @@ static void do_error(int code, va_list ap) {
 	sprintf(error, "expected no text after paragraph keyword");
 	flags = FILEPOS;
 	break;
+      case err_badparatype:
+	wsp = va_arg(ap, wchar_t *);
+	sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf));
+	fpos = *va_arg(ap, filepos *);
+	sprintf(error, "command `%.200s' unrecognised at start of"
+		" paragraph", sp);
+	flags = FILEPOS;
+	break;
       case err_badmidcmd:
 	wsp = va_arg(ap, wchar_t *);
 	sp = ustrtoa(wsp, auxbuf, sizeof(auxbuf));
diff --git a/input.c b/input.c
index 1f40912..32eca3b 100644
--- a/input.c
+++ b/input.c
@@ -505,7 +505,8 @@ static void read_file(paragraph ***ret, input *in, index *idx) {
 	    par.fpos = t.pos;
 	    switch (t.cmd) {
 	      default:
-		needkw = -1;
+		error(err_badparatype, t.text, &t.pos);
+		needkw = 4;
 		break;
 	      case c__comment:
 		if (isbrace(in))