I would like to see this feature in synedit.
How it would work? select any portion of the text and after triggering the sync edit function (by clicking a button or pressing a hotkey) when editing a word in the selection, all subsequent occurrences of that word in the selection to be simultaneously replaced
If you can tell me about how to interact with synedit selection, i would try to implement it myself (either from application or built in Synedit)
sync edit in action - Turbo Delphi 2006