(Sorry for the title. Any suggestions?)

I've set my commandline PS1 to cover 3 lines:

1. white space
2. user, server and pwd
3. $ or # to input

I think less (or more?) is configured to break after window's height - 1, because when I do a $ git log, the first two lines are invisible at the top of the window and the rest is scrollable.

I'm not sure who handles this scrolling and its configuration, but I assume GIT uses less/more.

Where can I configure that my scrollable window is window height - 3 lines and not window height - 1?

More info:

• If I cat lines.txt | less with a 23 line file, it shows the entire file and no scrolling.
• If I do the same with a 24 line file, it doesn't show line 1 (and no scrolling).
• With 25 lines: doesn't show lines 1 and 2 (and no scrolling).
• With 26 lines: shows line 1 and scrolling!

The less breakpoint is at the wrong height...