* Specifying a file in auto-mode-alist
@ 2021-04-23 20:25 Patrick Mahan
2021-04-23 20:42 ` Óscar Fuentes
0 siblings, 1 reply; 6+ messages in thread
From: Patrick Mahan @ 2021-04-23 20:25 UTC (permalink / raw)
To: help-gnu-emacs
All,
I have build scripts that capture a build (makefile output) into files
called build*.log or Build*.log. These files may occur at various points in
the directory tree.
However if I use the following:
(add-to-list 'auto-mode-alist (quote("build*\\.log'" . compilation-mode)))
When I edit a file say 'build.log' it does not enable compilation mode.
I tried -
(add-to-list 'auto-mode-alist (quote("build*\\'" . compilation-mode)))
But that clashes with other files like a0build.h.
I've read the wiki page on auto-mode-alist, but none of the examples are
about how to use filename that starts with 'xyz*.log'.
Thanks,
Patrick
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Specifying a file in auto-mode-alist
2021-04-23 20:25 Specifying a file in auto-mode-alist Patrick Mahan
@ 2021-04-23 20:42 ` Óscar Fuentes
2021-04-23 21:42 ` Stefan Monnier
2021-04-23 22:09 ` Patrick Mahan
0 siblings, 2 replies; 6+ messages in thread
From: Óscar Fuentes @ 2021-04-23 20:42 UTC (permalink / raw)
To: help-gnu-emacs
Patrick Mahan <plmahan@gmail.com> writes:
> All,
>
> I have build scripts that capture a build (makefile output) into files
> called build*.log or Build*.log. These files may occur at various points in
> the directory tree.
>
> However if I use the following:
>
> (add-to-list 'auto-mode-alist (quote("build*\\.log'" . compilation-mode)))
____________________________________________________^
> When I edit a file say 'build.log' it does not enable compilation mode.
>
> I tried -
>
> (add-to-list 'auto-mode-alist (quote("build*\\'" . compilation-mode)))
________________________________________________^
Why the ' ?
Try this regexp: "^[Bb]uild.*\\.log$"
That means: Starts with B or b followed by uild and then zero or more
arbitrary characters and ends with .log
(add-to-list 'auto-mode-alist '("^[Bb]uild.*\\.log$" . compilation-mode))
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Specifying a file in auto-mode-alist
2021-04-23 20:42 ` Óscar Fuentes
@ 2021-04-23 21:42 ` Stefan Monnier
2021-04-23 22:14 ` Patrick Mahan
2021-04-23 22:09 ` Patrick Mahan
1 sibling, 1 reply; 6+ messages in thread
From: Stefan Monnier @ 2021-04-23 21:42 UTC (permalink / raw)
To: help-gnu-emacs
>> (add-to-list 'auto-mode-alist (quote("build*\\.log'" . compilation-mode)))
> ____________________________________________________^
Here you needed to replace ' with \\'
>> When I edit a file say 'build.log' it does not enable compilation mode.
>>
>> I tried -
>>
>> (add-to-list 'auto-mode-alist (quote("build*\\'" . compilation-mode)))
> ________________________________________________^
>
And here you just forgot the \\.log
> Why the ' ?
>
> Try this regexp: "^[Bb]uild.*\\.log$"
No, he was on the right path.
The correct regexp construct to match the end of a string is \' (which
inside a string ends up looking like \\' since the backslash needs to be
escaped), whereas the $ you're recommending matches both the end of
a string and an end of *line*, so it can mis-match with a file named
"build.log\nhello.svg".
Stefan
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Specifying a file in auto-mode-alist
2021-04-23 21:42 ` Stefan Monnier
@ 2021-04-23 22:14 ` Patrick Mahan
0 siblings, 0 replies; 6+ messages in thread
From: Patrick Mahan @ 2021-04-23 22:14 UTC (permalink / raw)
To: Stefan Monnier; +Cc: help-gnu-emacs
On Fri, Apr 23, 2021 at 2:52 PM Stefan Monnier <monnier@iro.umontreal.ca>
wrote:
> >> (add-to-list 'auto-mode-alist (quote("build*\\.log'" .
> compilation-mode)))
> > ____________________________________________________^
>
> Here you needed to replace ' with \\'
>
> >> When I edit a file say 'build.log' it does not enable compilation mode.
> >>
> >> I tried -
> >>
> >> (add-to-list 'auto-mode-alist (quote("build*\\'" . compilation-mode)))
> > ________________________________________________^
> >
>
> And here you just forgot the \\.log
>
> > Why the ' ?
> >
> > Try this regexp: "^[Bb]uild.*\\.log$"
>
> No, he was on the right path.
>
> The correct regexp construct to match the end of a string is \' (which
> inside a string ends up looking like \\' since the backslash needs to be
> escaped), whereas the $ you're recommending matches both the end of
> a string and an end of *line*, so it can mis-match with a file named
> "build.log\nhello.svg".
>
>
Yes! Success! Thanks Stefan! Changing it to escape the ' makes it work
now.
Patrick
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Specifying a file in auto-mode-alist
2021-04-23 20:42 ` Óscar Fuentes
2021-04-23 21:42 ` Stefan Monnier
@ 2021-04-23 22:09 ` Patrick Mahan
2021-04-23 22:23 ` Stefan Monnier
1 sibling, 1 reply; 6+ messages in thread
From: Patrick Mahan @ 2021-04-23 22:09 UTC (permalink / raw)
To: Óscar Fuentes; +Cc: help-gnu-emacs
On Fri, Apr 23, 2021 at 1:51 PM Óscar Fuentes <ofv@wanadoo.es> wrote:
> Patrick Mahan <plmahan@gmail.com> writes:
>
> > All,
> >
> > I have build scripts that capture a build (makefile output) into files
> > called build*.log or Build*.log. These files may occur at various points
> in
> > the directory tree.
> >
> > However if I use the following:
> >
> > (add-to-list 'auto-mode-alist (quote("build*\\.log'" .
> compilation-mode)))
> ____________________________________________________^
>
> > When I edit a file say 'build.log' it does not enable compilation mode.
> >
> > I tried -
> >
> > (add-to-list 'auto-mode-alist (quote("build*\\'" . compilation-mode)))
> ________________________________________________^
>
> Why the ' ?
>
>
A lot of the examples in the wiki used them. But I see I should have
prefaced it with \\'.
> Try this regexp: "^[Bb]uild.*\\.log$"
>
> That means: Starts with B or b followed by uild and then zero or more
> arbitrary characters and ends with .log
>
> (add-to-list 'auto-mode-alist '("^[Bb]uild.*\\.log$" . compilation-mode))
>
>
emacs ~/workspace/src/build.log
Nope, it shows up in Fundamental mode.
Neither does emacs ~/workspace/src/build202104191533.log
Is there a "verbose" mode for emacs? Someway of seeing what is being
applied?
Thanks,
Patrick
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Specifying a file in auto-mode-alist
2021-04-23 22:09 ` Patrick Mahan
@ 2021-04-23 22:23 ` Stefan Monnier
0 siblings, 0 replies; 6+ messages in thread
From: Stefan Monnier @ 2021-04-23 22:23 UTC (permalink / raw)
To: help-gnu-emacs
>> (add-to-list 'auto-mode-alist '("^[Bb]uild.*\\.log$" . compilation-mode))
[...]
> emacs ~/workspace/src/build.log
> Nope, it shows up in Fundamental mode.
BTW, this is because of the `^` in his regexp: the regexps in
`auto-mode-alist` are matched against the full (absolute) file name, so
your regexp has to match ".../build.log" rather than just "build.log".
Stefan
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-04-23 22:23 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-04-23 20:25 Specifying a file in auto-mode-alist Patrick Mahan
2021-04-23 20:42 ` Óscar Fuentes
2021-04-23 21:42 ` Stefan Monnier
2021-04-23 22:14 ` Patrick Mahan
2021-04-23 22:09 ` Patrick Mahan
2021-04-23 22:23 ` Stefan Monnier
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).