Re: "... the window start at a meaningless point within a line."

[Eli Zaretskii <eliz@gnu.org>]

> Date: Mon, 19 Oct 2015 11:24:25 +0000
> Cc: emacs-devel@gnu.org
> From: Alan Mackenzie <acm@muc.de>
> 
> I think I'd prefer to have the "actual" BOLs at the LHS.  But the
> symbols at the left are still useful for discussion about a scenario.

If you insist.  But then please make them consistent: there's no need
to start with B, then go to A, then to C, then to C2 (what happened to
C1?), etc.

> 8. nlines = 3:
>       B-------------------------------
> WS----A-------------------------------
> L1----A2------------------------------\n
>    ^
> C-------------------------------------
> C2------------------------------------\n
> it
> C3------------------------------------
> T
> 
> ?
> 
> Here, point starts between L1 and A2, our target BOL is C3 (3 actual
> BOLs after L1) and Fvertical_motion puts `it' at C2 (3 xdisp BOLs after
> A).

I don't understand why "T" is always at bol.  It can be any column.