From Newsgroup: gnu.emacs.help

I am using Emacs to keep an eye on a log-file. I can see what has
changed and giving two times F9 I can later see what has changed
again.
I keep the cursor at the end of the file and have auto-revert-mode on.
Works great with one slight problem. When the file grows often the
last line is not at the bottom of the screen. I can solve this by
giving three time C-l, but that is a little nuisance. Is there a way
to have the last line always at the bottom of the screen?
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
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From Newsgroup: gnu.emacs.help

I can see what has changed and giving two times F9 I can later see
what has changed again.

I think we need to tell us what is your F9 key binding.

It is not bound on my emacs and this section in the manual
https://www.gnu.org/software/emacs/manual/html_node/elisp/Key-Binding-Conventions.html
says
Function keys F5 through F9 without modifier keys are also reserved for users to define.

I keep the cursor at the end of the file and have auto-revert-mode on.

I believe auto-revert-tail-mode does what you want. And check
https://www.gnu.org/software/emacs/manual/html_node/emacs/Auto-Revert.html for a few variables that control the auto-revert modes.

-- HASM


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From Newsgroup: gnu.emacs.help

HASM <hasm@example.invalid> writes:

I can see what has changed and giving two times F9 I can later see
what has changed again.

I think we need to tell us what is your F9 key binding.

It is not bound on my emacs and this section in the manual
https://www.gnu.org/software/emacs/manual/html_node/elisp/Key-Binding-Conventions.html
says
Function keys F5 through F9 without modifier keys are also reserved for users to define.

Oops, my bad. I defined that to be highlight-changes-mode so I can
easily switch between highlight mode on and of.

I keep the cursor at the end of the file and have auto-revert-mode on.

I believe auto-revert-tail-mode does what you want. And check
https://www.gnu.org/software/emacs/manual/html_node/emacs/Auto-Revert.html for a few variables that control the auto-revert modes.

I will try it out.
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
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From Newsgroup: gnu.emacs.help

Cecil Westerhof <Cecil@decebal.nl> writes:

I keep the cursor at the end of the file and have auto-revert-mode on.

I believe auto-revert-tail-mode does what you want. And check
https://www.gnu.org/software/emacs/manual/html_node/emacs/Auto-Revert.html >> for a few variables that control the auto-revert modes.

I will try it out.

Nope. The same problem. I think it only say that the changes are
always at the end of the file so things can be handled more efficient.
:'-(
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: gnu.emacs.help

Cecil Westerhof <Cecil@decebal.nl> writes:

I believe auto-revert-tail-mode does what you want. And check
https://www.gnu.org/software/emacs/manual/html_node/emacs/Auto-Revert.html
for a few variables that control the auto-revert modes.

I will try it out.

Nope. The same problem.

Works on my emacs, linux, and a file on the local file system.
Maybe only at the poll period, didn't check for that.

-- HASM
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From Newsgroup: gnu.emacs.help

HASM <hasm@example.invalid> writes:

Cecil Westerhof <Cecil@decebal.nl> writes:

I believe auto-revert-tail-mode does what you want. And check
https://www.gnu.org/software/emacs/manual/html_node/emacs/Auto-Revert.html
for a few variables that control the auto-revert modes.

I will try it out.

Nope. The same problem.

Works on my emacs, linux, and a file on the local file system.
Maybe only at the poll period, didn't check for that.

Then I have to try it out again.
Could it because I have a little older Emacs?
I am on Debian:
GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.24, cairo version 1.16.0) of 2021-03-28, modified by Debian
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
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From Newsgroup: gnu.emacs.help

Cecil Westerhof <Cecil@decebal.nl> writes:


[...]

Nope. The same problem. I think it only say that the changes are
always at the end of the file so things can be handled more efficient.
:'-(

auto-revert-tail-mode may be of interest.
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From Newsgroup: gnu.emacs.help

"W. Greenhouse" <wgreenhouse@tilde.club> writes:

Cecil Westerhof <Cecil@decebal.nl> writes:

[...]

Nope. The same problem. I think it only say that the changes are
always at the end of the file so things can be handled more efficient.
:'-(

auto-revert-tail-mode may be of interest.

That was what HASM was referring to and it does not work for me.

I believe auto-revert-tail-mode does what you want. And check
https://www.gnu.org/software/emacs/manual/html_node/emacs/Auto-Revert.html
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: gnu.emacs.help

Cecil Westerhof <Cecil@decebal.nl> writes:

I am using Emacs to keep an eye on a log-file. I can see what has
changed and giving two times F9 I can later see what has changed
again.
I keep the cursor at the end of the file and have auto-revert-mode on.
Works great with one slight problem. When the file grows often the
last line is not at the bottom of the screen. I can solve this by
giving three time C-l, but that is a little nuisance. Is there a way
to have the last line always at the bottom of the screen?

Hi,

I don't know if it would work for you but here is what I do:

- if it is not already the case, I toggle the buffer to
view-mode with 'C-x C-q'
- Then I hit 'F' (View-revert-buffer-scroll-page-forward) to
update the buffer and scroll forward.
--
Manuel Giraud
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From Newsgroup: gnu.emacs.help

Manuel Giraud <manuel@ledu-giraud.fr> writes:

Cecil Westerhof <Cecil@decebal.nl> writes:

I am using Emacs to keep an eye on a log-file. I can see what has
changed and giving two times F9 I can later see what has changed
again.
I keep the cursor at the end of the file and have auto-revert-mode on.
Works great with one slight problem. When the file grows often the
last line is not at the bottom of the screen. I can solve this by
giving three time C-l, but that is a little nuisance. Is there a way
to have the last line always at the bottom of the screen?

Hi,

I don't know if it would work for you but here is what I do:

- if it is not already the case, I toggle the buffer to
view-mode with 'C-x C-q'

No, that will not work, because then you go into read-only mode and in read-only mode you cannot change highlight-change mode. And that is
what I am using.
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
--- Synchronet 3.21d-Linux NewsLink 1.2

From Newsgroup: gnu.emacs.help

Cecil Westerhof <Cecil@decebal.nl> writes:

[...]

No, that will not work, because then you go into read-only mode and in read-only mode you cannot change highlight-change mode. And that is
what I am using.

Ok. I did not know about highlight-change mode but here is what I tried
and it seems to work for me:

- Open a read only log
- 'M-x highlight-changes-mode' on that buffer
- Hit 'F': the buffer is updated (and scrolled) with the new content
in a different face
--
Manuel Giraud
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