From 8f5b141392c5a4adc4eb32394e3336100ae3e817 Mon Sep 17 00:00:00 2001
From: Urja Rannikko <urjaman@gmail.com>
Date: Mon, 24 Nov 2014 18:30:14 +0200
Subject: [PATCH 1/3] terminal: Add support for ansi sequence CSI n X - erase n
 chars

---
 src/terminal.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/terminal.cpp b/src/terminal.cpp
index 227de61..9ebece9 100644
--- a/src/terminal.cpp
+++ b/src/terminal.cpp
@@ -609,6 +609,17 @@ void Terminal::ansiSequence(const QString& seq)
         }
         break;
 
+    case 'X':
+        if(!extra.isEmpty() || (params.count()>1)) {
+            unhandled=true;
+            break;
+        }
+	if (params.count()==0) {
+		params.append(1);
+	}
+	eraseLineAtCursor(cursorPos().x(),cursorPos().x()+(params.at(0)?params.at(0)-1:0));
+	break;	
+
     case 'L':  // insert lines
         if(!extra.isEmpty()) {
             unhandled=true;

From 7d863801772bfdc9bbd7a2313ed3efedd87741bd Mon Sep 17 00:00:00 2001
From: urjaman <urjaman@gmail.com>
Date: Mon, 24 Nov 2014 19:04:38 +0200
Subject: [PATCH 2/3] terminal: Add CSI n I and CSI n Z support and cleanup tab
 code (Next: terminal.h)

---
 src/terminal.cpp | 69 +++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 56 insertions(+), 13 deletions(-)

diff --git a/src/terminal.cpp b/src/terminal.cpp
index 9ebece9..5244ebc 100644
--- a/src/terminal.cpp
+++ b/src/terminal.cpp
@@ -297,14 +297,7 @@ void Terminal::insertInBuffer(const QString& chars)
             }
         }
         else if(ch.toLatin1()=='\t') {  //tab
-            if(cursorPos().y() <= iTabStops.size()) {
-                for(int i=0; i<iTabStops[cursorPos().y()-1].count(); i++) {
-                    if(iTabStops[cursorPos().y()-1][i] > cursorPos().x()) {
-                        setCursorPos(QPoint( iTabStops[cursorPos().y()-1][i], cursorPos().y() ));
-                        break;
-                    }
-                }
-            }
+            forwardTab();
         }
         else if(ch.toLatin1()==14 || ch.toLatin1()==15) {  //SI and SO, related to character set... ignore
         }
@@ -457,6 +450,30 @@ void Terminal::clearAll(bool wholeBuffer)
     setCursorPos(QPoint(1,1));
 }
 
+void Terminal::backwardTab(void)
+{
+    if(cursorPos().y() <= iTabStops.size()) {
+        for(int i=iTabStops[cursorPos().y()-1].count()-1; i>=0; i--) {
+            if(iTabStops[cursorPos().y()-1][i] < cursorPos().x()) {
+                setCursorPos(QPoint( iTabStops[cursorPos().y()-1][i], cursorPos().y() ));
+                break;
+            }
+        }
+    }
+}
+
+void Terminal::forwardTab(void)
+{
+    if(cursorPos().y() <= iTabStops.size()) {
+        for(int i=0; i<iTabStops[cursorPos().y()-1].count(); i++) {
+            if(iTabStops[cursorPos().y()-1][i] > cursorPos().x()) {
+                setCursorPos(QPoint( iTabStops[cursorPos().y()-1][i], cursorPos().y() ));
+                break;
+            }
+        }
+    }    
+}
+
 
 void Terminal::ansiSequence(const QString& seq)
 {
@@ -614,11 +631,37 @@ void Terminal::ansiSequence(const QString& seq)
             unhandled=true;
             break;
         }
-	if (params.count()==0) {
-		params.append(1);
-	}
-	eraseLineAtCursor(cursorPos().x(),cursorPos().x()+(params.at(0)?params.at(0)-1:0));
-	break;	
+    	if (params.count()==0) {
+    		params.append(1);
+    	}
+    	eraseLineAtCursor(cursorPos().x(),cursorPos().x()+(params.at(0)?params.at(0)-1:0));
+    	break;
+
+    case 'I':
+        if(!extra.isEmpty() || (params.count()>1)) {
+        	unhandled=true;
+        	break;
+        }
+    	if (params.count()==0) {
+    		params.append(1);
+    	}
+    	for (int i=0;i<params.at(0);i++) {
+    		forwardTab();
+    	}
+    	break;
+
+    case 'Z':
+        if(!extra.isEmpty() || (params.count()>1)) {
+        	unhandled=true;
+        	break;
+        }
+    	if (params.count()==0) {
+    		params.append(1);
+    	}
+    	for (int i=0;i<params.at(0);i++) {
+    		backwardTab();
+    	}
+    	break;
 
     case 'L':  // insert lines
         if(!extra.isEmpty()) {

From cb83d500883d93ffcb82ea145772188f654ab795 Mon Sep 17 00:00:00 2001
From: urjaman <urjaman@gmail.com>
Date: Mon, 24 Nov 2014 19:06:00 +0200
Subject: [PATCH 3/3] Add definitions for the previous commit (tab CSI support)

---
 src/terminal.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/terminal.h b/src/terminal.h
index 134a93e..206d12c 100644
--- a/src/terminal.h
+++ b/src/terminal.h
@@ -123,7 +123,9 @@ class Terminal : public QObject
     void resetTerminal();
     void resetTabs();
     void adjustSelectionPosition(int lines);
-
+    void forwardTab();
+    void backwardTab();
+    
     TextRender* iRenderer;
     PtyIFace* iPtyIFace;
     QQuickView* iWindow;