From 557ff9418ff811829c5f7f410c56cd552b605d10 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Thu, 18 Jul 2019 14:07:58 -0400
Subject: font_default(): New function

And make font_find() return NULL if a font can't be found.
---
diff --git a/src/font.c b/src/font.c
index fb54604..30d51c9 100644
--- a/src/font.c
+++ b/src/font.c
@@ -48,12 +48,30 @@ static const struct font_desc *fonts[] = {
 };
 
 struct font *
+font_default(void)
+{
+	struct font *font;
+	int          pref;
+	size_t       i;
+
+	font = NULL;
+	pref = -10000;
+	for (i = 0; i < *(&fonts + 1) - fonts; ++i) {
+		if (fonts[i]->pref > pref) {
+			font = (struct font *) fonts[i];
+			pref = fonts[i]->pref;
+		}
+	}
+	return font;
+}
+
+struct font *
 font_find(const char *name)
 {
 	size_t i;
 
 	if (!name) {
-		return (struct font *) fonts[0];
+		return NULL;
 	}
 
 	for (i = 0; i < *(&fonts + 1) - fonts; ++i) {
@@ -61,7 +79,7 @@ font_find(const char *name)
 			return (struct font *) fonts[i];
 		}
 	}
-	return (struct font *) fonts[0];
+	return NULL;
 }
 
 int
diff --git a/src/font.h b/src/font.h
index 27cc08e..c1abe26 100644
--- a/src/font.h
+++ b/src/font.h
@@ -27,6 +27,9 @@
 #include <linux/font.h>
 
 struct font *
+font_default(void) __attribute__((pure));
+
+struct font *
 font_find(const char *name) __attribute__((pure));
 
 int
--
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