Re: [PATCH man v3 0/2] TIOCLINUX.2const: Document TIOCL_SETSEL selection modes

[Jared Finder <jared@finder.org>]

On 2025-03-22 12:37, Alejandro Colomar wrote:
> Hi all,
> 
> On Mon, Mar 17, 2025 at 12:43:40PM -0500, G. Branden Robinson wrote:
>> [somewhat whimsical]
>> 
>> At 2025-03-17T14:23:09+0100, Alejandro Colomar wrote:
>> > On Sun, Mar 02, 2025 at 08:43:31PM +0100, Günther Noack wrote:
>> > >      +.TP
>> > >      +.B TIOCL_SELPOINTER
>> > >      +Show the pointer at position
>> > >     -+.RI ( xe ,\~ ye ).
>> > >     ++.RI ( xs ,\~ ys )
>> > >     ++or
>> > >     ++.RI ( xe ,\~ ye ),
>> > >     ++whichever is greater.
>> >
>> > Everything else looks good to me.  But,
>> >
>> > What's "greater" when you have two dimensions?
>> 
>> Since we can model the terminal display as an inner product space,
>> the terminal driver can compute an orthographic projection of the
>> plane onto a line and from there use routine arithmetic inequality
>> operators.
> 
> In any case, this is going to be confusing.  Can we get some wording
> that is obvious to a school student?

How about something like "... whichever is greater. When the positions 
span multiple horizontal lines (ys != ye), characters are ordered left 
to right, top to bottom, similar to when writing English text".

   -- MJF