Re: hline

[Emanuel Berg]

Marcin Borkowski wrote:

>> (defun hline (&optional char)
>>   (interactive "P")
>>   (let ((len (- (window-width) (current-column) 1))
>>         (c (or char ?-)) )
>>     (insert (make-string len c)) ))
>
> Funny how I wrote an almost identical function just two days ago...
> Though I used (1- (window-width)), since in my use case I knew that
> (current-column) would be zero.
>
> Anybody knows why it is necessary to subtract 1?

:O

I don't understand why YOU ask this?

But for everyone else's information, it can be better
explained like this, I think, than the examples I just posted.

If we want to cover the distance between A to B on a line,
this distance is B - A. However B is reported not the       _
desired B but B + 1. So by subtracting 1 we get the real B |_|

:)

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