From 17c1a5801f4e50d0be78efceb2f885897d7fc13c Mon Sep 17 00:00:00 2001
From: Rodrigo Braz Monteiro <zeratul@cellosoft.com>
Date: Fri, 3 Aug 2007 17:22:06 +0000
Subject: [PATCH] Issue #514 - Fixed crash with vector clip. Also fixed a minor
 bug that caused visual typesetting to flag the script as modified even if
 nothing changed.

Originally committed to SVN as r1466.
---
 aegisub/visual_tool.cpp             | 7 +++++++
 aegisub/visual_tool_vector_clip.cpp | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/aegisub/visual_tool.cpp b/aegisub/visual_tool.cpp
index 08c989d44..24683efa0 100644
--- a/aegisub/visual_tool.cpp
+++ b/aegisub/visual_tool.cpp
@@ -257,7 +257,14 @@ void VisualTool::OnMouseEvent (wxMouseEvent &event) {
 //////////
 // Commit
 void VisualTool::Commit(bool full) {
+	// Get grid
 	SubtitlesGrid *grid = VideoContext::Get()->grid;
+
+	// See if anything actually changed
+	AssDialogue *diag = grid->GetDialogue(grid->editBox->linen);
+	if (diag && grid->editBox->TextEdit->GetText() == diag->Text) return;
+
+	// Commit changes
 	grid->editBox->CommitText();
 	if (full) grid->ass->FlagAsModified(_("visual typesetting"));
 	grid->CommitChanges(false,!full);
diff --git a/aegisub/visual_tool_vector_clip.cpp b/aegisub/visual_tool_vector_clip.cpp
index 750643058..cb79f7b65 100644
--- a/aegisub/visual_tool_vector_clip.cpp
+++ b/aegisub/visual_tool_vector_clip.cpp
@@ -362,6 +362,9 @@ void VisualToolVectorClip::InitializeHold() {
 
 		// Insert
 		else {
+			// Check if there is at least one curve to split
+			if (spline.curves.size() == 0) return;
+
 			// Split the curve
 			SplineCurve *c1 = spline.GetCurve(curve);
 			SplineCurve c2;