@Alan-Kilborn said: So then this is a Notepad++ bug, correct? Considering that Notepad++ just uses Scintilla’s SCI_LINESSPLIT, it’s more of a Scintilla bug, if that project would consider it a bug. The documentation says that function finds split points “in a similar manner to line wrapping”; line wrapping also treats line endings as part of the line when they are visible. However, I suppose Notepad++ could temporarily turn off showing line endings before doing the split.

Tabs v spaces As Peter said, the most important part is consistency. Mixing tabs and spaces together makes no one happy. I will throw out a couple arguments for tabs here: Indentation of code, markup language, et. cetera is meant to show the structure of whatever. Tabs are a logical, structural element. Spaces are physical. Different users may want different sizes of indentation. If i want 4 character indentation and my coworker wants 2, tabs can be set to show our preferred width. Seems for the most part that spaces are winning out though.