From d3f77e4433435b9770afc3a615e22b7ac219867c Mon Sep 17 00:00:00 2001
From: John Cupitt <jcupitt@gmail.com>
Date: Wed, 22 Dec 2021 10:25:52 +0000
Subject: [PATCH] add a sniffer for TTF

since TTF files can be caught by the almost unfixably overgenerous TGA sniffer

see https://github.com/libvips/php-vips/issues/127
---
 ChangeLog                | 1 +
 libvips/foreign/magick.c | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 85e15346..6c7b1130 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,7 @@
 - fix a crash with 0 length vectors 
 - change default frame delay for GIFs from 1s to 0.1s
 - remove stray trailing comma from iiif3 dirnames [whalehub]
+- fix TTF load [chregu]
 
 21/11/21 started 8.12.1
 - fix insert [chregu]
diff --git a/libvips/foreign/magick.c b/libvips/foreign/magick.c
index a942d7e7..1866843d 100644
--- a/libvips/foreign/magick.c
+++ b/libvips/foreign/magick.c
@@ -82,6 +82,14 @@ magick_sniff( const unsigned char *bytes, size_t length )
 		bytes[3] == 0 )
 		return( "ICO" );
 
+	if( length >= 5 &&
+		bytes[0] == 0 && 
+		bytes[1] == 1 &&
+		bytes[2] == 0 &&
+		bytes[3] == 0 &&
+		bytes[4] == 0 )
+		return( "TTF" );
+
 	if( length >= 18 &&
 		(bytes[1] == 0 || 
 		 bytes[1] == 1) &&