From 065993ebacbad379f81d9a6ae8dce3c566ca5523 Mon Sep 17 00:00:00 2001
From: emaste <emaste@FreeBSD.org>
Date: Sun, 8 Apr 2018 20:30:52 +0000
Subject: [PATCH] MFC r331935: vtfontcvt: allow .bdf characters less than full
 height

Sponsored by:	The FreeBSD Foundation
---
 usr.bin/vtfontcvt/vtfontcvt.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/usr.bin/vtfontcvt/vtfontcvt.c b/usr.bin/vtfontcvt/vtfontcvt.c
index ffe43b561a4..f1d2eaae933 100644
--- a/usr.bin/vtfontcvt/vtfontcvt.c
+++ b/usr.bin/vtfontcvt/vtfontcvt.c
@@ -265,10 +265,23 @@ parse_bdf(FILE *fp, unsigned int map_idx)
 
 		if (strncmp(ln, "BITMAP", 6) == 0 &&
 		    (ln[6] == ' ' || ln[6] == '\0')) {
+			/*
+			 * Assume that the next _height_ lines are bitmap
+			 * data.  ENDCHAR is allowed to terminate the bitmap
+			 * early but is not otherwise checked; any extra data
+			 * is ignored.
+			 */
 			for (i = 0; i < height; i++) {
 				if ((ln = fgetln(fp, &length)) == NULL)
 					errx(1, "Unexpected EOF!\n");
 				ln[length - 1] = '\0';
+				if (strcmp(ln, "ENDCHAR") == 0) {
+					memset(bytes + i * wbytes, 0,
+					    (height - i) * wbytes);
+					memset(bytes_r + i * wbytes, 0,
+					    (height - i) * wbytes);
+					break;
+				}
 				sscanf(ln, "%x", &line);
 				if (parse_bitmap_line(bytes + i * wbytes,
 				     bytes_r + i * wbytes, line, dwidth) != 0)
-- 
2.45.0