[sapphirecat]

There's another mistake in that command (also present in the article): with that "t" in there, `yt$` will yank up to, but not including, a '$' character on the current line. Unless there is no '$', which is an error and no yanking. Yank from cursor, not including newline, is `y$` without a "t".

[city41]

and capital Y is equivalent to y$. A capital letter for a verb is "do this verb from current location until end of line"

[graywh]

Y is an exception to that rule, it's a synonym for yy (like S for cc), but easily changed to match D and C.

[city41]

Ah wow, you are correct. Any good reason that is the default behavior for Y?