How to stop text editor selecting paragraph instead of to the end of the line when I hit shift-end?

How can I stop my text editor from selecting the paragraph instead of to the end of the line when I hit shift-end?

For my use, the best lightweight text editors are the ones geared towards programmers (they offer customizable syntax highlighting). But there’s an odd associated behavior in these text editors.

I’ve been using Scite for years, but when I hit shift-end it selects the paragraph instead of to the end of the line (the way it does in, for example, the very lightweight Leafpad). This is what I mean:

Is there a specific name for this behavior? Is there a way to change it in Scite, or in another programming-specific lightweight text editor? Is there a different keyboard shortcut that works in text editors geared towards programmers?

Thanks so much for any help/suggestions.