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Subject: bug#56357: Request for font size adaptation that fits window
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I am basically an old fart who cannot read small fonts anymore.=C2=A0 Could=
 you think of a way to automatically maximise the font size.=C2=A0=20

Suppose a user uses a 13 pt font size.=C2=A0 Let there be some space betwee=
n the longest line in the buffer and the edge of the window.=C2=A0 It would=
 be super if the font size could be automatically increased, such that the =
difference between the longest line and the window size in minimised.

Many thanks for reading this.

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<html>
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<div><br></div><div>I am basically an old fart who cannot read small fonts anymore.&nbsp; Could you think of a way to automatically maximise the font size.&nbsp; <br></div><div dir="auto"><br></div><div dir="auto">Suppose a user uses a 13 pt font size.&nbsp; Let there be some space between the longest line in the buffer and the edge of the window.&nbsp; It would be super if the font size could be automatically increased, such that the difference between the longest line and the window size in minimised.<br></div><div dir="auto"><br></div><div dir="auto">Many thanks for reading this.<br></div>  </body>
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Subject: bug#56357: Acknowledgement (Request for font size adaptation that
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Subject: bug#56357: Request for font size adaptation that fits window
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  > I am basically an old fart who cannot read small fonts anymore. 
  > Could you think of a way to automatically maximise the font size. 

You're not the only person who has this problem.

-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)

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Subject: bug#56357: Request for font size adaptation that fits window
Resent-From: Lars Ingebrigtsen <larsi@HIDDEN>
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carlmarcos@HIDDEN writes:

> Suppose a user uses a 13 pt font size.  Let there be some space
> between the longest line in the buffer and the edge of the window.  It
> would be super if the font size could be automatically increased, such
> that the difference between the longest line and the window size in
> minimised.

I think that sounds like a useful feature, and I'm kinda surprised that
it doesn't exist yet.  Or does it?  Anybody know?

To implement this, I guess the obvious thing would be to have a global
minor mode that'd listen to frame size changes, and then adjust the font
size up/down to reach the desired number of characters in a frame?  So
we'd have a user option font-size-adjust-target (defaulting to 80)
and a font-size-adjust-mode?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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> Cc: 56357 <at> debbugs.gnu.org
> From: Lars Ingebrigtsen <larsi@HIDDEN>
> Date: Mon, 04 Jul 2022 13:01:20 +0200
> 
> carlmarcos@HIDDEN writes:
> 
> > Suppose a user uses a 13 pt font size.  Let there be some space
> > between the longest line in the buffer and the edge of the window.  It
> > would be super if the font size could be automatically increased, such
> > that the difference between the longest line and the window size in
> > minimised.
> 
> I think that sounds like a useful feature, and I'm kinda surprised that
> it doesn't exist yet.  Or does it?  Anybody know?
> 
> To implement this, I guess the obvious thing would be to have a global
> minor mode that'd listen to frame size changes, and then adjust the font
> size up/down to reach the desired number of characters in a frame?  So
> we'd have a user option font-size-adjust-target (defaulting to 80)
> and a font-size-adjust-mode?

That's not what the feature request asked for, AFAIU: it wanted
dynamic resizing, and it wanted the size to depend on the "longest
line" (not clear if "longest in the window" or "longest in the
buffer").

With your proposal, how would you determine the target value?  If it's
just an arbitrary value (80 sounds like an arbitrary one to me), then
the recently-added global-text-scale-adjust-resizes-frames variable
does the same, just from the other end: the user enlarges the font and
the frame follows suit.  And since our default frame width is already
set for 80 characters, it sounds like we already have the feature you
envisioned, no?

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 Content preview:  Eli Zaretskii <eliz@HIDDEN> writes: > With your proposal,
 how would you determine the target value? If it's > just an arbitrary value
 (80 sounds like an arbitrary one to me),
 then > the recently-added global-text-scale-adjust-resizes-fr
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Eli Zaretskii <eliz@HIDDEN> writes:

> With your proposal, how would you determine the target value?  If it's
> just an arbitrary value (80 sounds like an arbitrary one to me), then
> the recently-added global-text-scale-adjust-resizes-frames variable
> does the same, just from the other end: the user enlarges the font and
> the frame follows suit.  And since our default frame width is already
> set for 80 characters, it sounds like we already have the feature you
> envisioned, no?

I think the user wants to be able to drag a frame to be bigger and get
the font to be resized to have the same number of columns, so it's not
the same feature at all.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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> From: Lars Ingebrigtsen <larsi@HIDDEN>
> Cc: carlmarcos@HIDDEN,  56357 <at> debbugs.gnu.org
> Date: Mon, 04 Jul 2022 15:54:44 +0200
> 
> Eli Zaretskii <eliz@HIDDEN> writes:
> 
> > With your proposal, how would you determine the target value?  If it's
> > just an arbitrary value (80 sounds like an arbitrary one to me), then
> > the recently-added global-text-scale-adjust-resizes-frames variable
> > does the same, just from the other end: the user enlarges the font and
> > the frame follows suit.  And since our default frame width is already
> > set for 80 characters, it sounds like we already have the feature you
> > envisioned, no?
> 
> I think the user wants to be able to drag a frame to be bigger and get
> the font to be resized to have the same number of columns, so it's not
> the same feature at all.

I'm asking why it matters how you "drag the frame": whether by
actually dragging its edge or by C-M-wheel-up.  The results is the
same, no?

And that actually gives an idea: make dragging the frame call the same
function that C-M-wheel-up does.

Message sent to bug-gnu-emacs@HIDDEN:

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> > Suppose a user uses a 13 pt font size.  Let there be some space
> > between the longest line in the buffer and the edge of the window.
> > It would be super if the font size could be automatically increased,
> > such that the difference between the longest line and the window=20
> > size in minimised.
>=20
> I think that sounds like a useful feature, and I'm kinda surprised that
> it doesn't exist yet.  Or does it?  Anybody know?
>=20
> To implement this, I guess the obvious thing would be to have a global
> minor mode that'd listen to frame size changes, and then adjust the
> font size up/down to reach the desired number of characters in a frame?
> So we'd have a user option font-size-adjust-target (defaulting to 80)
> and a font-size-adjust-mode?

Not sure, but I have a feeling this feature might be
related to what you're thinking about / looking for.
It doesn't sound like it's exactly what this report
has requested.  But it sounds like it's related and
it might even address the underlying need/problem.

My library `face-remap+.el' introduces option
`text-scale-resize-window', which automatically resizes
the selected window (horizontally, vertically, or both)
when text is resized.  This means that when you resize
text the way the window fits the text remains relatively
constant.  Shrinking the text in one window shrinks that
window, giving more space to adjacent windows.

IOW, it keeps whatever relation currently exists between
the apparent text size and the window size.  That also
means that it lets you take advantage of the space freed
up by resizing (text-scaling) to a smaller font.

I offered this feature to Emacs dev _long_ ago (as soon
as text-scaling was added to Emacs).  It was summarily
rejected, with a no-one-would-ever-want-to-do-that
dismissal.  But personally, I wouldn't use text scaling
without such a feature.

I see, and saw, no reason not to give users the choice,
as opposed to hard-coding the behavior so as to always
waste screen real estate with added blank space when
text is shrunk.

The code is trivial - a tweak to `text-scale-increase'
to respect the new user option.  The code is here:

https://www.emacswiki.org/emacs/download/face-remap%2b.el

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severity 56357 wishlist
quit

Last modified: Mon, 4 Jul 2022 16:30:02 UTC

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