From f0ff8c617906d199de73a8c4369c4addefdb01b5 Mon Sep 17 00:00:00 2001
From: Thomas Goyne <plorkyeran@aegisub.org>
Date: Sat, 9 Nov 2013 06:25:50 -0800
Subject: [PATCH] Improve the error message in the fonts collector when a style
 does not exist

Closes #1661.
---
 aegisub/src/font_file_lister.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/aegisub/src/font_file_lister.cpp b/aegisub/src/font_file_lister.cpp
index 7c53d0aa6..4aa9110e6 100644
--- a/aegisub/src/font_file_lister.cpp
+++ b/aegisub/src/font_file_lister.cpp
@@ -72,8 +72,15 @@ FontCollector::FontCollector(FontCollectorStatusCallback status_callback, FontFi
 void FontCollector::ProcessDialogueLine(const AssDialogue *line, int index) {
 	if (line->Comment) return;
 
+	auto style_it = styles.find(line->Style);
+	if (style_it == end(styles)) {
+		status_callback(wxString::Format(_("Style '%s' does not exist\n"), to_wx(line->Style)), 2);
+		++missing;
+		return;
+	}
+
 	boost::ptr_vector<AssDialogueBlock> blocks(line->ParseTags());
-	StyleInfo style = styles[line->Style];
+	StyleInfo style = style_it->second;
 	StyleInfo initial = style;
 
 	bool overriden = false;