Kind of a tricky one to describe. Here goes though. Open up your favourite text editor on OSX (well, Textedit, Coda 2, a Chrome textarea at least). Type a long line of text, followed by a short line. Place your cursor at the end, like this:
I am a long, long, line of text. I am short.|
If I want to delete the line "I am short" and the line break, in Windows I'd Shift+Up, then Ctrl+Shift+End. (Similarly, Ctrl+Shift+Home would select both lines in their entirety.)
On OSX, I can Shift+Up to select the second half of the first line fine, but Cmd+Shift+Right doesn't do anything. Cmd+Shift+Left does, however, select both lines like on Windows. You can repeat the same behaviour with using Ctrl+a/e for home/end.
Why doesn't Cmd+Shift+Right work? Can I make it work? Is there a similar command which would work?
I know I can do Cmd+Shift+Left, Shift+Left and it achieves the same thing with the same number of pushes, but Shift+Up etc is pretty ingrained in my muscle memory. I still use a Windows PC on a regular basis too, so would prefer to use the same general method, and Ctrl+Shift+Home, Shift+Left on a PC is a bit more cumbersome as Home and Left aren't in the same block of keys.