GNU bug report logs - #4520
downcasing function arguments by default not appropriate in multi-tty

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Message #3 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Dan Nicolaescu <dann <at> ics.uci.edu>
To: bug-gnu-emacs <bug-gnu-emacs <at> gnu.org>
Subject: downcasing function arguments by default not appropriate in multi-tty
Date: Tue, 22 Sep 2009 08:27:15 -0700 (PDT)

*Help* buffers downcase function arguments depending on the font in use
 (if it supports italics?).
Changing a buffer's contents based on the font is use is not appropriate
since we have multi-tty, the same buffer can be shown simultaneously in
an X11 frame and a tty frame, and the properties of the font used in the
X11 frame can be very different from the ones used in a tty frame.

So changing the buffer content _by_default_ is not a good idea.
AFAIK we do not do such a thing anywhere else in emacs.

Message #8 received at 4520 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Juanma Barranquero <lekktu <at> gmail.com>
To: Dan Nicolaescu <dann <at> ics.uci.edu>
Cc: 4520 <at> debbugs.gnu.org
Subject: Re: bug#4520: downcasing function arguments by default not 
	appropriate in multi-tty
Date: Tue, 22 Sep 2009 23:42:13 +0200

On Tue, Sep 22, 2009 at 17:27, Dan Nicolaescu <dann <at> ics.uci.edu> wrote:

> Changing a buffer's contents based on the font is use is not appropriate
> since we have multi-tty, the same buffer can be shown simultaneously in
> an X11 frame and a tty frame, and the properties of the font used in the
> X11 frame can be very different from the ones used in a tty frame.

Well, when the argument downcasing was implemented multi-tty wasn't in
Emacs, so it's no wonder we didn't think of that.

> So changing the buffer content _by_default_ is not a good idea.
> AFAIK we do not do such a thing anywhere else in emacs.

In the patch I'm planning to commit for #4510 I proposed

(defcustom help-downcase-arguments
  (and (face-differs-from-default-p 'help-argument-name) t)
  ...)

but it's just as easy to initialize it to nil. It's an interface
change, but not too serious; a note on NEWS will suffice, IMO. I'll
adjust my patch.

    Juanma

Message #13 received at 4520-done <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Juanma Barranquero <lekktu <at> gmail.com>
To: Drew Adams <drew.adams <at> oracle.com>, Dan Nicolaescu <dann <at> ics.uci.edu>
Cc: 4510-done <at> debbugs.gnu.org, 4520-done <at> debbugs.gnu.org
Subject: Re: bug#4510: 23.1; Separate help-argument-face from downcasing
Date: Thu, 24 Sep 2009 21:25:22 +0200

I've installed the patch, defaulting `help-downcase-arguments' to nil
as per Dan's request in bug#4520.

If someone objects to the change in the default appearance of argument
names we'll know soon enough...

    Juanma

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