GNU bug report logs - #29857
27.0.50; error: "Loading `nil': old-style backquotes detected!"

Previous Next

Full log

View this message in rfc822 format

From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Philipp Stephani <p.stephani2 <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#29857: closed (27.0.50; error: "Loading `nil': old-style
 backquotes detected!")
Date: Sun, 07 Jan 2018 13:28:02 +0000

[Message part 1 (text/plain, inline)]

Your message dated Sun, 07 Jan 2018 13:26:46 +0000
with message-id <CAArVCkQOvefDuN66MwzWHB6f9cFi6hJ2s8HdY=0tZ2ucXx=B+g <at> mail.gmail.com>
and subject line Re: bug#29857: 27.0.50; error: "Loading `nil': old-style backquotes detected!"
has caused the debbugs.gnu.org bug report #29857,
regarding 27.0.50; error: "Loading `nil': old-style backquotes detected!"
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
29857: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=29857
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; error: "Loading `nil': old-style backquotes detected!"
Date: Tue, 26 Dec 2017 15:38:42 +0100

Hello,

Insert into a fresh buffer (e.g. *scratch*):

#+begin_src emacs-lisp
`(progn
   (add-to-list 'rcirc-client-commands ,(concat "/" (symbol-name command)))
   (defun ,(intern (concat "rcirc-cmd-" (symbol-name command)))
       (,@argument &optional process target)
     ,(concat docstring "\n\nNote: If PROCESS or TARGET are nil, the values given"
	      "\nby `rcirc-buffer-process' and `rcirc-target' will be used.")
     ,interactive-form
     (let ((process (or process (rcirc-buffer-process)))
	   (target (or target rcirc-target)))
       (ignore target) ; mark `target' variable as ignorable
       ,@body)))
#+end_src

(that's the body of the `defun-rcirc-command' macro in rcirc.el).  Put
point after the starting backquote character, at the position of the
outermost opening paren.  Then (read (current-buffer)) errors with

| Debugger entered--Lisp error: (error "Loading `nil': old-style backquotes detected!")
|   read(#<buffer *scratch*>)
|   [...]

I think raising this error is not justified, as there are no old-style
backquotes there AFAIK.  Also, the error message saying loading `nil'
failed is confusing, it took me a while to find out where I tried to
load `nil' (nowhere).

Finally, let me say that `read' raising such errors about old-style
backquotes, may it be justified or not, breaks "el-search" which relies
heavily on `read' at diverse buffer positions to succeed.


TIA,

Michael.



In GNU Emacs 27.0.50 (build 25, x86_64-pc-linux-gnu, GTK+ Version 3.22.24)
 of 2017-12-21 built on drachen
Repository revision: e45499a6c1bae4577af2e86397e9bab23fd63bf1
Windowing system distributor 'The X.Org Foundation', version 11.0.11905000
System Description: Debian GNU/Linux testing (buster)

[Message part 3 (message/rfc822, inline)]

From: Philipp Stephani <p.stephani2 <at> gmail.com>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: 29857-done <at> debbugs.gnu.org
Subject: Re: bug#29857: 27.0.50;
 error: "Loading `nil': old-style backquotes detected!"
Date: Sun, 07 Jan 2018 13:26:46 +0000

[Message part 4 (text/plain, inline)]

Michael Heerdegen <michael_heerdegen <at> web.de> schrieb am Sa., 30. Dez. 2017
um 23:33 Uhr:

> Hi Philipp,
>
> thanks for working on this.
>
> >  > It would be reasonable and easy to remove the "Loading `nil'" part in
> >  > the case where no file is being loaded.
> >
> >  Yes, I think that would be good.
> >
> > OK, I've sent a patch to do that:
> > https://lists.gnu.org/archive/html/emacs-devel/2017-12/msg00901.html
>
> Yes, that should be ok, I think.
>
> >  > Otherwise I'd accept introducing a variable to control whether
> >  > oldstyle backquotes should raise an error or get interpreted as
> >  > newstyle.
> >
> >  That would be optimal for my case.
> >
> > I've sent a patch for this as well:
> > https://lists.gnu.org/archive/html/emacs-devel/2017-12/msg00902.html
>
> Thanks.  Looks like it does what I want.
>
>
OK, I've now pushed both patches to master.

[Message part 5 (text/html, inline)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.