It seems working fine.&nbsp; Just a couple of things that could be changed.<br><br>In smart tab mode pressing ENTER after any right gretl tag/statement should behave like it was ENTER and then TAB. That will move the cursor at the new line and at the right indented position. 
<br>If this wouldn&#39;t be the right position ( for example if the previous line was the last one of an If branch) BACKSPACE should move the cursor one tab back, and only one space.<br><br>In normal mode it would fine to keep the focus on the previously highlighted code after each TAB/SHIFT^TAB.&nbsp; It will allow fast tab sliding for that code portion.
<br><br>Finally the icing on the cake..<br>In smart tab mode, selecting all the text and pressing TAB shouldn&#39;t automatically indent what&#39;s inside a multi-line comments cause often what&#39;s there is deliberately not indented.
<br><br>Cheers<br><br><br>