On 7/3/2006, at 0:14, Michael Ströck wrote:
[...] What's going on?
The problem is with the lack of newlines. It is a know issue and primarily has to do with handing over the entire line to ATSUI for rendering and text metrics, but there are also other issues, like using line endings as safe points for parsing of text for syntax highlight, meaning each change require the entire line (70-80KB) to be reparsed, and while that happens, edits to the line will stall the main thread.
Enabling soft wrap (View menu) solves the ATSUI issue.