Hello! One of the standard keyboard shortcuts that work across all text fields in MacOS is option (or “alt”) + up/down arrow. It moves the caret to the beginning or end of the current line. It can also be used together with shift to select all the text from the current position to the beginning/end of the line.
For some reason these standard commands don’t work in the Obsidian editor. Normally these commands just work everywhere where there is keyboard input in the OS, so I’m guessing there is some unused command that Obsidian picks up but that isn’t used, which prevents the default behavior? All other standard text editing commands that I’ve tried, such as ctrl+T, work as they should.
As often is the case with keyboard commands, you don’t really notice how much you use them until they stop working - they become a completely instinctive part of inputting text. So it is very disruptive when they’re not supported.