From 3ed8135791957f9837aeea0e6bed10f168fdf157 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=96=9F=E9=85=8C=20=E9=B5=AC=E5=85=84?= <tgckpg@gmail.com>
Date: Tue, 5 Apr 2016 06:05:53 +0800
Subject: [PATCH] minor bug fixes

---
 botanjs/src/Components/Vim/Actions/DELETE.js | 11 ++++++++++-
 botanjs/src/Components/Vim/Actions/INSERT.js | 11 +++++++----
 botanjs/src/Components/Vim/Cursor.js         |  2 +-
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/botanjs/src/Components/Vim/Actions/DELETE.js b/botanjs/src/Components/Vim/Actions/DELETE.js
index 10a09c9..86922c1 100644
--- a/botanjs/src/Components/Vim/Actions/DELETE.js
+++ b/botanjs/src/Components/Vim/Actions/DELETE.js
@@ -45,6 +45,13 @@
 		var cur = this.__cursor;
 		var feeder = cur.feeder;
 
+		// Do nothing if content is considered empty
+		if( feeder.firstBuffer.next.placeholder && feeder.content.length < 2 )
+		{
+			debug.Info( "Content is empty" );
+			return true;
+		}
+
 		var Triggered = false;
 
 		if( sp == undefined )
@@ -134,7 +141,8 @@
 			}
 		}
 
-		var c = feeder.content;
+		// last "\n" padding
+		var c = feeder.content.slice( 0, -1 );
 
 		var s = sp;
 		var e = cur.aPos;
@@ -151,6 +159,7 @@
 		this.__nline = occurence( removed, "\n" );
 
 		feeder.content = c.substring( 0, s ) + c.substring( e + 1 );
+		if( feeder.content === "" ) feeder.content = "\n";
 
 		// Try to keep the original panning if possible
 		feeder.pan( undefined
diff --git a/botanjs/src/Components/Vim/Actions/INSERT.js b/botanjs/src/Components/Vim/Actions/INSERT.js
index b37562d..ed9ebd8 100644
--- a/botanjs/src/Components/Vim/Actions/INSERT.js
+++ b/botanjs/src/Components/Vim/Actions/INSERT.js
@@ -110,9 +110,7 @@
 			var oY = feeder.panY + cur.Y;
 			if( cur.X == 0 && feeder.panY == 0 && cur.Y == 0 ) return;
 
-			cur.moveX( -1, true, true );
-
-			var f = cur.aPos;
+			var f = cur.aPos - 1;
 
 			if( this.__punch <= this.__minReach )
 			{
@@ -123,6 +121,10 @@
 				feeder.content.substring( 0, f )
 				+ feeder.content.substring( f + 1 );
 
+			feeder.pan();
+
+			cur.moveX( -1, true, true );
+
 			if( 0 < this.__insertLen ) this.__insertLen --;
 			this.__punch --;
 		}
@@ -135,10 +137,11 @@
 			feeder.content =
 				feeder.content.substring( 0, f )
 				+ feeder.content.substring( f + 1 );
+
+			feeder.pan();
 		}
 		else return;
 
-		feeder.pan();
 		feeder.dispatcher.dispatchEvent( new BotanEvent( "VisualUpdate" ) );
 	};
 
diff --git a/botanjs/src/Components/Vim/Cursor.js b/botanjs/src/Components/Vim/Cursor.js
index 0fddee3..e9b6d13 100644
--- a/botanjs/src/Components/Vim/Cursor.js
+++ b/botanjs/src/Components/Vim/Cursor.js
@@ -217,7 +217,7 @@
 
 		if( boundary )
 		{
-			x = 0 < d ? lineEnd : 0;
+			x = 0 < x ? lineEnd : 0;
 		}
 		else if( c == "\n" )
 		{