[Lazarus] Auto indentation

[Hans-Peter Diettrich]

Mattias Gaertner schrieb:

> With the new synedit OnPaste event I will try to fix the indent on
> paste.

IMO you should rethink the handling of insertion/deletion. A single 
Replace(start, delta, text) method can handle every case, with positive 
deltas meaning insertion and negative deltas meaning deletion or 
substitution of text. This single method knows about the range of the 
affected text, as required for the handling of all related attributes 
(line count, cursor position, syntax highlighting, blocks, folding, 
formatting, bookmarks...). All related objects should implement the same 
method for dealing with updates.

DoDi