bug#33602: 27.0.50; Compiling no file at

[Alan Mackenzie <acm@muc.de>]

Hello, Martin.

On Fri, Dec 07, 2018 at 18:49:54 +0100, martin rudalics wrote:
>  >> FWIW the problem is in package.el.  Have a look at the fix I just posted.

>  > Could you perhaps be more explicit, please?  The problem with "Compiling
>  > no file at ..." is one I can't even reproduce at the moment.

> Sorry, I had to leave and only wanted people to wait with bisecting
> until Stefan resolved the current issue.  Beware also that I haven't
> followed the threads with the issue discussed here so maybe I'm not
> aware of all details.  IIUC all started with Markus reporting that

>  > (is that a late April Fools' Day prank?)
>  > after each restart, a *Compile-log* buffer reports
>  > Compiling no file at <any date>

> and one of the next days Angelo reported

>  > Compiling no file at Thu Dec  6 09:46:33 2018

>  From Angelo's init file I traced that message back to the presence of

> (require 'package)

> and removing that removed the message.

When I insert that into my .emacs, regardless of whether near the
beginning or near the end, I don't get the *Compile-Log* buffer.

> Then I looked into package.el and found that code at its end:

>        (insert "\f
> ;; Local\sVariables:
> ;; version-control: never
> ;;\sno-byte-compile: t
> ;; no-update-autoloads: t
> ;; End:
> "))))

> Since commenting out the

> ;;\sno-byte-compile: t

> line again avoids the message I concluded that Stefan somehow got the
> grep in makefile wrong which looks for

> grep '^;.*no-byte-compile: t'

> and apparently finds the one in that line.  So the connection you
> asked for here

>  > The patch you recently posted for package.el is something to do with
>  > package.el being compiled or not being compiled.  What connection does
>  > this have with the irritating appearance of the message in *Compile-Log*?

> should be hopefully clear now.

Sorry, it's not at all clear.  I just don't see how a mix up in the
Local Variables section(s) can cause the appearance of *Compile-Log*
with its irritating message.  I can't reproduce the problem, either.

What is the causal connection between the Local Variables: mixup and the
appearnace of the *Compile-Log* buffer?

> My patch is just a workaround (which happens to work here) for people
> to test. A clean fix could use 'concat' to produce that string (I have
> no idea whether no-update-autoloads might be affected as well) like

>        (insert (concat "\f\n"
>                        ";; Local Variables:\n"
>                        ";; version-control: never\n"
>                        ";; no-byte-compile: t\n"
>                        ";; no-update-autoloads: t\n"
>                        ";; End:\n"))

> so the ^;.* match is avoided by the spaces and the quotation mark.

> martin

-- 
Alan Mackenzie (Nuremberg, Germany).