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Subject: Re: bug#79769: ELPA version of flymake is broken in older Emacsen
To: Eli Zaretskii <eliz@HIDDEN>, Spencer Baugh <sbaugh@HIDDEN>,
79769-done <at> debbugs.gnu.org
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I've pushed a fix to master and tagged Flymake 1.4.3. It should solve
most of the problems described. Closing. Let me know if problems persist.
Jo=C3=A3o
On Thu, Nov 6, 2025 at 1:41=E2=80=AFAM Jo=C3=A3o T=C3=A1vora <joaotavora@gm=
ail.com> wrote:
> Hi.
>
> Indeed, it looks like this commit
>
> commit 9d6a4fdd7e4e82ea804a83f428e395ffbbc3e8dd
> Author: Matthew Tromp <matthewktromp@HIDDEN>
> Date: Mon May 19 15:45:21 2025 -0400
>
> Didn't follow the advice:
>
> ;; This is a GNU ELPA :core package. Avoid functionality that is not
> ;; compatible with the version of Emacs recorded above.
>
> It's just a question of using define-key instead of keymap-set.
>
> As to project-root it should be available because flymake requires
> project. Maybe the required project could be bumped (and it should)
> but that's usually not necessary.
>
> Finally the next-error-... things are non-essential features. They're
> bound to n and p in flymake-diagnostics-buffer-mode-map, and
> they were added by Matthew too, but this binding didn't replace
> any new one. So we could disable the binding, or we could just
> let it error.
>
> I've added Spencer to this thread.
>
> Jo=C3=A3o
>
>
>
>
>
> On Wed, Nov 5, 2025 at 3:04=E2=80=AFPM Eli Zaretskii <eliz@HIDDEN> wrote=
:
>
>> > From: Steve Purcell <steve@HIDDEN>
>> > Date: Wed, 5 Nov 2025 13:49:41 +0000
>> >
>> > Running with flymake-1.4.2 from ELPA in CI with Emacs 27.2, one finds
>> > the following bytecomp warnings:
>> >
>> > flymake.el:2443:1:Warning: the following functions are not known to be
>> > defined: keymap-set, next-error-this-buffer-no-select,
>> > previous-error-this-buffer-no-select, project-root, project-buffer=
s
>> >
>> > and then consequent runtime errors occur when enabling flymake-mode:
>> >
>> > Debugger entered--Lisp error: (void-function keymap-set)
>> > keymap-set((keymap (32 . flymake-show-diagnostic) (13 .
>> flymake-goto-diagnostic)) "C-o" flymake-show-diagnostic)
>> > byte-code("\300
>> \301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310\303#=
\210\306\1\311\312#\210\306\1\313\314#\210\211\207"
>> [make-sparse-keymap define-key "\15" flymake-goto-diagnostic " "
>> flymake-show-diagnostic keymap-set "C-o" "C-m" "n"
>> next-error-this-buffer-no-select "p" previous-error-this-buffer-no-selec=
t]
>> 5)
>> > (defvar flymake-diagnostics-buffer-mode-map (byte-code "\300
>> \301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310\303#=
\210\306\1\311\312#\210\306\1\313\314#\210\211\207"
>> [make-sparse-keymap define-key "\15" flymake-goto-diagnostic " "
>> flymake-show-diagnostic keymap-set "C-o" "C-m" "n"
>> next-error-this-buffer-no-select "p" previous-error-this-buffer-no-selec=
t]
>> 5))
>> > flymake-mode()
>> >
>> > The idea of the ELPA package is to distribute modern flymake for use i=
n
>> > older Emacsen, and if this isn't possible for some reason, then the EL=
PA
>> > flymake package itself should declare a package dependency on an
>> > appropriate minimum Emacs version.
>> >
>> >
>> > To reproduce: use Emacs 27.2 (or perhaps even 27.1):
>> >
>> > emacs -Q
>> > M-x package-refresh-contents
>> > M-x list-packages
>> >
>> > Select flymake 1.4.2 and install it, then enable flymake-mode in a
>> specific buffer.
>>
>> Thanks, I'm adding Jo=C3=A3o to the discussion.
>>
>
>
> --
> Jo=C3=A3o T=C3=A1vora
>
--=20
Jo=C3=A3o T=C3=A1vora
--000000000000ab7037064314413f
Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr"><div>I've pushed a fix to master and tagged Flymake 1.=
4.3.=C2=A0 It should solve</div><div>most of the problems described.=C2=A0 =
Closing.=C2=A0 Let me know if problems persist.</div><div><br></div><div>Jo=
=C3=A3o</div></div><br><div class=3D"gmail_quote gmail_quote_container"><di=
v dir=3D"ltr" class=3D"gmail_attr">On Thu, Nov 6, 2025 at 1:41=E2=80=AFAM J=
o=C3=A3o T=C3=A1vora <<a href=3D"mailto:joaotavora@HIDDEN">joaotavora=
@gmail.com</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex"><div dir=3D"ltr"><div>Hi.</div><div><br></div><div>Indeed, it lo=
oks like this commit</div><div><br></div><div>commit 9d6a4fdd7e4e82ea804a83=
f428e395ffbbc3e8dd<br>Author: Matthew Tromp <<a href=3D"mailto:matthewkt=
romp@HIDDEN" target=3D"_blank">matthewktromp@HIDDEN</a>><br>Date: =
=C2=A0 Mon May 19 15:45:21 2025 -0400</div><div><br></div><div>Didn't f=
ollow the advice:</div><div><br></div><div>;; This is a GNU ELPA :core pack=
age.=C2=A0 Avoid functionality that is not<br>;; compatible with the versio=
n of Emacs recorded above.</div><div><br></div><div>It's just a questio=
n of using define-key instead of keymap-set.</div><div><br></div><div>As to=
project-root it should be available because flymake requires</div><div>pro=
ject.=C2=A0 Maybe the required project could be bumped (and it should)</div=
><div>but that's usually not necessary.</div><div><br></div><div>Finall=
y the next-error-... things are non-essential features.=C2=A0 They're</=
div><div>bound to n and p in=C2=A0flymake-diagnostics-buffer-mode-map, and<=
/div><div>they were added by Matthew too, but this binding didn't repla=
ce</div><div>any new one.=C2=A0 So we could disable the binding, or we coul=
d just</div><div>let it error.</div><div><br></div><div>I've added Spen=
cer to this thread.</div><div><br></div><div>Jo=C3=A3o</div><div><br></div>=
<div><br></div><div><br></div><div><br></div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Nov 5, 2025 at 3:04=E2=
=80=AFPM Eli Zaretskii <<a href=3D"mailto:eliz@HIDDEN" target=3D"_blank=
">eliz@HIDDEN</a>> wrote:<br></div><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padd=
ing-left:1ex">> From: Steve Purcell <<a href=3D"mailto:steve@sanityin=
c.com" target=3D"_blank">steve@HIDDEN</a>><br>
> Date: Wed, 5 Nov 2025 13:49:41 +0000<br>
> <br>
> Running with flymake-1.4.2 from ELPA in CI with Emacs 27.2, one finds<=
br>
> the following bytecomp warnings:<br>
> <br>
> flymake.el:2443:1:Warning: the following functions are not known to be=
<br>
>=C2=A0 =C2=A0 =C2=A0defined: keymap-set, next-error-this-buffer-no-sele=
ct,<br>
>=C2=A0 =C2=A0 =C2=A0previous-error-this-buffer-no-select, project-root,=
project-buffers<br>
> <br>
> and then consequent runtime errors occur when enabling flymake-mode:<b=
r>
> <br>
> Debugger entered--Lisp error: (void-function keymap-set)<br>
>=C2=A0 =C2=A0keymap-set((keymap (32 . flymake-show-diagnostic) (13 . fl=
ymake-goto-diagnostic)) "C-o" flymake-show-diagnostic)<br>
>=C2=A0 =C2=A0byte-code("\300 \301\1\302\303#\210\301\1\304\305#\21=
0\306\1\307\305#\210\306\1\310\303#\210\306\1\311\312#\210\306\1\313\314#\2=
10\211\207" [make-sparse-keymap define-key "\15" flymake-got=
o-diagnostic " " flymake-show-diagnostic keymap-set "C-o&quo=
t; "C-m" "n" next-error-this-buffer-no-select "p&q=
uot; previous-error-this-buffer-no-select] 5)<br>
>=C2=A0 =C2=A0(defvar flymake-diagnostics-buffer-mode-map (byte-code &qu=
ot;\300 \301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310=
\303#\210\306\1\311\312#\210\306\1\313\314#\210\211\207" [make-sparse-=
keymap define-key "\15" flymake-goto-diagnostic " " fly=
make-show-diagnostic keymap-set "C-o" "C-m" "n&quo=
t; next-error-this-buffer-no-select "p" previous-error-this-buffe=
r-no-select] 5))<br>
>=C2=A0 =C2=A0flymake-mode()<br>
> <br>
> The idea of the ELPA package is to distribute modern flymake for use i=
n<br>
> older Emacsen, and if this isn't possible for some reason, then th=
e ELPA<br>
> flymake package itself should declare a package dependency on an<br>
> appropriate minimum Emacs version.<br>
> <br>
> <br>
> To reproduce: use Emacs 27.2 (or perhaps even 27.1):<br>
> <br>
> emacs -Q<br>
> M-x package-refresh-contents<br>
> M-x list-packages<br>
> <br>
> Select flymake 1.4.2 and install it, then enable flymake-mode in a spe=
cific buffer.<br>
<br>
Thanks, I'm adding Jo=C3=A3o to the discussion.<br>
</blockquote></div><div><br clear=3D"all"></div><br><span class=3D"gmail_si=
gnature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature">Jo=
=C3=A3o T=C3=A1vora</div>
</blockquote></div><div><br clear=3D"all"></div><br><span class=3D"gmail_si=
gnature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature">Jo=
=C3=A3o T=C3=A1vora</div>
--000000000000ab7037064314413f--
Steve Purcell <steve@HIDDEN>:João Távora <joaotavora@HIDDEN>:
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Subject: Re: bug#79769: ELPA version of flymake is broken in older Emacsen
To: Eli Zaretskii <eliz@HIDDEN>, Spencer Baugh <sbaugh@HIDDEN>
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Hi.
Indeed, it looks like this commit
commit 9d6a4fdd7e4e82ea804a83f428e395ffbbc3e8dd
Author: Matthew Tromp <matthewktromp@HIDDEN>
Date: Mon May 19 15:45:21 2025 -0400
Didn't follow the advice:
;; This is a GNU ELPA :core package. Avoid functionality that is not
;; compatible with the version of Emacs recorded above.
It's just a question of using define-key instead of keymap-set.
As to project-root it should be available because flymake requires
project. Maybe the required project could be bumped (and it should)
but that's usually not necessary.
Finally the next-error-... things are non-essential features. They're
bound to n and p in flymake-diagnostics-buffer-mode-map, and
they were added by Matthew too, but this binding didn't replace
any new one. So we could disable the binding, or we could just
let it error.
I've added Spencer to this thread.
Jo=C3=A3o
On Wed, Nov 5, 2025 at 3:04=E2=80=AFPM Eli Zaretskii <eliz@HIDDEN> wrote:
> > From: Steve Purcell <steve@HIDDEN>
> > Date: Wed, 5 Nov 2025 13:49:41 +0000
> >
> > Running with flymake-1.4.2 from ELPA in CI with Emacs 27.2, one finds
> > the following bytecomp warnings:
> >
> > flymake.el:2443:1:Warning: the following functions are not known to be
> > defined: keymap-set, next-error-this-buffer-no-select,
> > previous-error-this-buffer-no-select, project-root, project-buffers
> >
> > and then consequent runtime errors occur when enabling flymake-mode:
> >
> > Debugger entered--Lisp error: (void-function keymap-set)
> > keymap-set((keymap (32 . flymake-show-diagnostic) (13 .
> flymake-goto-diagnostic)) "C-o" flymake-show-diagnostic)
> > byte-code("\300
> \301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310\303#\=
210\306\1\311\312#\210\306\1\313\314#\210\211\207"
> [make-sparse-keymap define-key "\15" flymake-goto-diagnostic " "
> flymake-show-diagnostic keymap-set "C-o" "C-m" "n"
> next-error-this-buffer-no-select "p" previous-error-this-buffer-no-select=
]
> 5)
> > (defvar flymake-diagnostics-buffer-mode-map (byte-code "\300
> \301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310\303#\=
210\306\1\311\312#\210\306\1\313\314#\210\211\207"
> [make-sparse-keymap define-key "\15" flymake-goto-diagnostic " "
> flymake-show-diagnostic keymap-set "C-o" "C-m" "n"
> next-error-this-buffer-no-select "p" previous-error-this-buffer-no-select=
]
> 5))
> > flymake-mode()
> >
> > The idea of the ELPA package is to distribute modern flymake for use in
> > older Emacsen, and if this isn't possible for some reason, then the ELP=
A
> > flymake package itself should declare a package dependency on an
> > appropriate minimum Emacs version.
> >
> >
> > To reproduce: use Emacs 27.2 (or perhaps even 27.1):
> >
> > emacs -Q
> > M-x package-refresh-contents
> > M-x list-packages
> >
> > Select flymake 1.4.2 and install it, then enable flymake-mode in a
> specific buffer.
>
> Thanks, I'm adding Jo=C3=A3o to the discussion.
>
--=20
Jo=C3=A3o T=C3=A1vora
--0000000000004f54a50642e32647
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<div dir=3D"ltr"><div>Hi.</div><div><br></div><div>Indeed, it looks like th=
is commit</div><div><br></div><div>commit 9d6a4fdd7e4e82ea804a83f428e395ffb=
bc3e8dd<br>Author: Matthew Tromp <<a href=3D"mailto:matthewktromp@gmail.=
com">matthewktromp@HIDDEN</a>><br>Date: =C2=A0 Mon May 19 15:45:21 20=
25 -0400</div><div><br></div><div>Didn't follow the advice:</div><div><=
br></div><div>;; This is a GNU ELPA :core package.=C2=A0 Avoid functionalit=
y that is not<br>;; compatible with the version of Emacs recorded above.</d=
iv><div><br></div><div>It's just a question of using define-key instead=
of keymap-set.</div><div><br></div><div>As to project-root it should be av=
ailable because flymake requires</div><div>project.=C2=A0 Maybe the require=
d project could be bumped (and it should)</div><div>but that's usually =
not necessary.</div><div><br></div><div>Finally the next-error-... things a=
re non-essential features.=C2=A0 They're</div><div>bound to n and p in=
=C2=A0flymake-diagnostics-buffer-mode-map, and</div><div>they were added by=
Matthew too, but this binding didn't replace</div><div>any new one.=C2=
=A0 So we could disable the binding, or we could just</div><div>let it erro=
r.</div><div><br></div><div>I've added Spencer to this thread.</div><di=
v><br></div><div>Jo=C3=A3o</div><div><br></div><div><br></div><div><br></di=
v><div><br></div></div><br><div class=3D"gmail_quote gmail_quote_container"=
><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Nov 5, 2025 at 3:04=E2=80=AF=
PM Eli Zaretskii <<a href=3D"mailto:eliz@HIDDEN">eliz@HIDDEN</a>> w=
rote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0p=
x 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">> From:=
Steve Purcell <<a href=3D"mailto:steve@HIDDEN" target=3D"_blank"=
>steve@HIDDEN</a>><br>
> Date: Wed, 5 Nov 2025 13:49:41 +0000<br>
> <br>
> Running with flymake-1.4.2 from ELPA in CI with Emacs 27.2, one finds<=
br>
> the following bytecomp warnings:<br>
> <br>
> flymake.el:2443:1:Warning: the following functions are not known to be=
<br>
>=C2=A0 =C2=A0 =C2=A0defined: keymap-set, next-error-this-buffer-no-sele=
ct,<br>
>=C2=A0 =C2=A0 =C2=A0previous-error-this-buffer-no-select, project-root,=
project-buffers<br>
> <br>
> and then consequent runtime errors occur when enabling flymake-mode:<b=
r>
> <br>
> Debugger entered--Lisp error: (void-function keymap-set)<br>
>=C2=A0 =C2=A0keymap-set((keymap (32 . flymake-show-diagnostic) (13 . fl=
ymake-goto-diagnostic)) "C-o" flymake-show-diagnostic)<br>
>=C2=A0 =C2=A0byte-code("\300 \301\1\302\303#\210\301\1\304\305#\21=
0\306\1\307\305#\210\306\1\310\303#\210\306\1\311\312#\210\306\1\313\314#\2=
10\211\207" [make-sparse-keymap define-key "\15" flymake-got=
o-diagnostic " " flymake-show-diagnostic keymap-set "C-o&quo=
t; "C-m" "n" next-error-this-buffer-no-select "p&q=
uot; previous-error-this-buffer-no-select] 5)<br>
>=C2=A0 =C2=A0(defvar flymake-diagnostics-buffer-mode-map (byte-code &qu=
ot;\300 \301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310=
\303#\210\306\1\311\312#\210\306\1\313\314#\210\211\207" [make-sparse-=
keymap define-key "\15" flymake-goto-diagnostic " " fly=
make-show-diagnostic keymap-set "C-o" "C-m" "n&quo=
t; next-error-this-buffer-no-select "p" previous-error-this-buffe=
r-no-select] 5))<br>
>=C2=A0 =C2=A0flymake-mode()<br>
> <br>
> The idea of the ELPA package is to distribute modern flymake for use i=
n<br>
> older Emacsen, and if this isn't possible for some reason, then th=
e ELPA<br>
> flymake package itself should declare a package dependency on an<br>
> appropriate minimum Emacs version.<br>
> <br>
> <br>
> To reproduce: use Emacs 27.2 (or perhaps even 27.1):<br>
> <br>
> emacs -Q<br>
> M-x package-refresh-contents<br>
> M-x list-packages<br>
> <br>
> Select flymake 1.4.2 and install it, then enable flymake-mode in a spe=
cific buffer.<br>
<br>
Thanks, I'm adding Jo=C3=A3o to the discussion.<br>
</blockquote></div><div><br clear=3D"all"></div><br><span class=3D"gmail_si=
gnature_prefix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature">Jo=
=C3=A3o T=C3=A1vora</div>
--0000000000004f54a50642e32647--
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Date: Wed, 05 Nov 2025 17:04:29 +0200
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To: Steve Purcell <steve@HIDDEN>, =?utf-8?B?Sm/Do28gVMOhdm9yYQ==?=
<joaotavora@HIDDEN>
In-Reply-To: <4B6F8007-A581-4BDC-878B-C997B523A83E@HIDDEN> (message
from Steve Purcell on Wed, 5 Nov 2025 13:49:41 +0000)
Subject: Re: bug#79769: ELPA version of flymake is broken in older Emacsen
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> From: Steve Purcell <steve@HIDDEN>
> Date: Wed, 5 Nov 2025 13:49:41 +0000
>
> Running with flymake-1.4.2 from ELPA in CI with Emacs 27.2, one finds
> the following bytecomp warnings:
>
> flymake.el:2443:1:Warning: the following functions are not known to be
> defined: keymap-set, next-error-this-buffer-no-select,
> previous-error-this-buffer-no-select, project-root, project-buffers
>
> and then consequent runtime errors occur when enabling flymake-mode:
>
> Debugger entered--Lisp error: (void-function keymap-set)
> keymap-set((keymap (32 . flymake-show-diagnostic) (13 . flymake-goto-diagnostic)) "C-o" flymake-show-diagnostic)
> byte-code("\300 \301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310\303#\210\306\1\311\312#\210\306\1\313\314#\210\211\207" [make-sparse-keymap define-key "\15" flymake-goto-diagnostic " " flymake-show-diagnostic keymap-set "C-o" "C-m" "n" next-error-this-buffer-no-select "p" previous-error-this-buffer-no-select] 5)
> (defvar flymake-diagnostics-buffer-mode-map (byte-code "\300 \301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310\303#\210\306\1\311\312#\210\306\1\313\314#\210\211\207" [make-sparse-keymap define-key "\15" flymake-goto-diagnostic " " flymake-show-diagnostic keymap-set "C-o" "C-m" "n" next-error-this-buffer-no-select "p" previous-error-this-buffer-no-select] 5))
> flymake-mode()
>
> The idea of the ELPA package is to distribute modern flymake for use in
> older Emacsen, and if this isn't possible for some reason, then the ELPA
> flymake package itself should declare a package dependency on an
> appropriate minimum Emacs version.
>
>
> To reproduce: use Emacs 27.2 (or perhaps even 27.1):
>
> emacs -Q
> M-x package-refresh-contents
> M-x list-packages
>
> Select flymake 1.4.2 and install it, then enable flymake-mode in a specific buffer.
Thanks, I'm adding João to the discussion.
bug-gnu-emacs@HIDDEN:bug#79769; Package emacs.
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Subject: ELPA version of flymake is broken in older Emacsen
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Running with flymake-1.4.2 from ELPA in CI with Emacs 27.2, one finds
the following bytecomp warnings:
flymake.el:2443:1:Warning: the following functions are not known to be
defined: keymap-set, next-error-this-buffer-no-select,
previous-error-this-buffer-no-select, project-root, project-buffers
and then consequent runtime errors occur when enabling flymake-mode:
Debugger entered--Lisp error: (void-function keymap-set)
keymap-set((keymap (32 . flymake-show-diagnostic) (13 . =
flymake-goto-diagnostic)) "C-o" flymake-show-diagnostic)
byte-code("\300 =
\301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310\303#\2=
10\306\1\311\312#\210\306\1\313\314#\210\211\207" [make-sparse-keymap =
define-key "\15" flymake-goto-diagnostic " " flymake-show-diagnostic =
keymap-set "C-o" "C-m" "n" next-error-this-buffer-no-select "p" =
previous-error-this-buffer-no-select] 5)
(defvar flymake-diagnostics-buffer-mode-map (byte-code "\300 =
\301\1\302\303#\210\301\1\304\305#\210\306\1\307\305#\210\306\1\310\303#\2=
10\306\1\311\312#\210\306\1\313\314#\210\211\207" [make-sparse-keymap =
define-key "\15" flymake-goto-diagnostic " " flymake-show-diagnostic =
keymap-set "C-o" "C-m" "n" next-error-this-buffer-no-select "p" =
previous-error-this-buffer-no-select] 5))
flymake-mode()
The idea of the ELPA package is to distribute modern flymake for use in
older Emacsen, and if this isn't possible for some reason, then the ELPA
flymake package itself should declare a package dependency on an
appropriate minimum Emacs version.
To reproduce: use Emacs 27.2 (or perhaps even 27.1):
emacs -Q
M-x package-refresh-contents
M-x list-packages
Select flymake 1.4.2 and install it, then enable flymake-mode in a =
specific buffer.=
Steve Purcell <steve@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#79769; Package emacs.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.