[AUCTeX] how to disable indentation for tabular-like environment

[François Patte]

Bonjour,

I would like to stop automatic indentation in tabular-like environment
(tabular, longtable...)

I followed this:
http://tex.stackexchange.com/questions/241779/indentation-of-tabular-like-environments-in-auctex-11-88

But this does not work at all....

What isthe "magic"?

Thank you.

[Mosè Giordano]

Hi François,

Post by François Patte
Bonjour,
I would like to stop automatic indentation in tabular-like environment
(tabular, longtable...)
http://tex.stackexchange.com/questions/241779/indentation-of-tabular-like-environments-in-auctex-11-88
But this does not work at all....
What isthe "magic"?

Once you set and apply `LaTeX-indent-environment-list' there is no
"magic" you don't need to do anything else. Maybe you didn't apply
the change or it wasn't saved for all future sessions? What's the
value of `LaTeX-indent-environment-list' in your LaTeX buffer?

Bye,
Mosè

[François Patte]

Hi François,

Post by François Patte
Bonjour,
I would like to stop automatic indentation in tabular-like environment
(tabular, longtable...)
http://tex.stackexchange.com/questions/241779/indentation-of-tabular-like-environments-in-auctex-11-88
But this does not work at all....
What isthe "magic"?

Once you set and apply `LaTeX-indent-environment-list' there is no
"magic" you don't need to do anything else. Maybe you didn't apply
the change or it wasn't saved for all future sessions? What's the
value of `LaTeX-indent-environment-list' in your LaTeX buffer?

I have this in my .emacs-custom.el:

'(LaTeX-indent-environment-list
(quote
(("longtable")
("verbatim" current-indentation)
("verbatim*" current-indentation)
("align" LaTeX-indent-tabular)
("align*" LaTeX-indent-tabular)
("array" LaTeX-indent-tabular)
("eqnarray" LaTeX-indent-tabular)
("eqnarray*" LaTeX-indent-tabular)
("displaymath")
("equation")
("equation*")
("picture")
("tabbing")
("table")
("table*"))))

And AucTex continues to indent longtable environment as it did
previously.... ie: an unreadable source file as soon as you have a table
with very long rows

[Mosè Giordano]

Post by François Patte
And AucTex continues to indent longtable environment as it did
previously.... ie: an unreadable source file as soon as you have a table
with very long rows

The problem was that file styles overrode custom settings, hanks for
spotting this! I fixed it in git. If you aren't using development
version of AUCTeX you'll get the fix with next ELPA or stable version.

Bye,
Mosè

[Arash Esbati]

Hi Mosè,

Post by Mosè Giordano

Post by François Patte
And AucTex continues to indent longtable environment as it did
previously.... ie: an unreadable source file as soon as you have a table
with very long rows

The problem was that file styles overrode custom settings, hanks for
spotting this! I fixed it in git. If you aren't using development
version of AUCTeX you'll get the fix with next ELPA or stable version.

I wonder if you wanted to do this in currvita.el:

(add-to-list 'LaTeX-item-list '("cvlist" . LaTeX-item-argument) t)

You changed only the year in the copyright statement.

Best, Arash

[Mosè Giordano]

Hi Arash,

Post by Arash Esbati
Hi Mosè,

Post by Mosè Giordano

Post by François Patte
And AucTex continues to indent longtable environment as it did
previously.... ie: an unreadable source file as soon as you have a table
with very long rows

The problem was that file styles overrode custom settings, hanks for
spotting this! I fixed it in git. If you aren't using development
version of AUCTeX you'll get the fix with next ELPA or stable version.

(add-to-list 'LaTeX-item-list '("cvlist" . LaTeX-item-argument) t)
You changed only the year in the copyright statement.

No, I didn't want to do that change (`LaTeX-item-list' isn't a
customizable variable, I see little need to append elements to it). I
touched that file because it has a reference to
`LaTeX-indent-environment-list', but I didn't intend to do anything on
it ;-)

Bye,
Mosè

[Denis Bitouzé]

Post by Mosè Giordano

Post by François Patte
And AucTex continues to indent longtable environment as it did
previously.... ie: an unreadable source file as soon as you have a table
with very long rows

The problem was that file styles overrode custom settings, hanks for
spotting this! I fixed it in git. If you aren't using development
version of AUCTeX you'll get the fix with next ELPA or stable version.

Could you please elaborate the trick? I added:

┌────
│ (add-to-list 'LaTeX-indent-environment-list '("myenv" current-indentation))
└────

to my `.emacs' but the got the error:

┌────
│ Warning (initialization): An error occurred while loading ‘/home/bitouze/.emacs’:
│
│ Symbol's value as variable is void: LaTeX-indent-environment-list
└────

despite I'm using the last AUCTeX version: (elpa) auctex-11.89.7.

Thanks.

[Mosè Giordano]

Hi Denis,

Post by Denis Bitouzé
┌────
│ (add-to-list 'LaTeX-indent-environment-list '("myenv" current-indentation))
└────
┌────
│
│ Symbol's value as variable is void: LaTeX-indent-environment-list
└────
despite I'm using the last AUCTeX version: (elpa) auctex-11.89.7.

When you use `add-to-list' is almost always a good idea to wrap it in
a `with-eval-after-load' (or `eval-after-load' in older Emacsens),
unless you know when the variable is defined in your init file:

(with-eval-after-load "latex"
(add-to-list 'LaTeX-indent-environment-list '("myenv" current-indentation)))

This should do the trick.

Bye,
Mosè

[Denis Bitouzé]

Post by Mosè Giordano
Hi Denis,

Hi Mosè,

Post by Mosè Giordano
When you use `add-to-list' is almost always a good idea to wrap it in
a `with-eval-after-load' (or `eval-after-load' in older Emacsens),

Okay, I've written your advise as a comment at 1st line in my
`.emacs'! :)

Post by Mosè Giordano
(with-eval-after-load "latex"
(add-to-list 'LaTeX-indent-environment-list '("myenv" current-indentation)))
This should do the trick.

Indeed, no more error: thanks.

Maybe I didn't understand what `current-indentation' is supposed to do
but with the following:

┌────
│ \begin{myenv}
│ \begin{frame}
│ Foo.
│ \end{frame}
│ \end{myenv}
└────

and the cursor on the line:

┌────
│ \begin{frame}
└────

pressing <TAB> does indent the line.

[Mosè Giordano]

Post by Denis Bitouzé
Maybe I didn't understand what `current-indentation' is supposed to do
┌────
│ \begin{myenv}
│ \begin{frame}
│ Foo.
│ \end{frame}
│ \end{myenv}
└────
┌────
│ \begin{frame}
└────
pressing <TAB> does indent the line.

`current-indentation` is usually employed in verbatim-like
environments: as it leaves indentation as it is, doesn't change. It
keeps "current indentation". What do you want to achieve?

Bye,
Mosè

[Denis Bitouzé]

Post by Mosè Giordano

Post by Denis Bitouzé
Maybe I didn't understand what `current-indentation' is supposed to do
┌────
│ \begin{myenv}
│ \begin{frame}
│ Foo.
│ \end{frame}
│ \end{myenv}
└────
┌────
│ \begin{frame}
└────
pressing <TAB> does indent the line.

`current-indentation` is usually employed in verbatim-like
environments: as it leaves indentation as it is, doesn't change.

That's the reason I'm puzzled: I expected pressing <TAB> doesn't indent
the line if the cursor is on the line:

┌────
│ \begin{frame}
└────

Post by Mosè Giordano
It keeps "current indentation". What do you want to achieve?

I'd like to achieve for `myenv' environment the same behavior as the
`document' environment. For instance, with the following content:

┌────
│ \documentclass{article}
│ \begin{document}
│ Foo.
│ \end{document}
└────

and the cursor is on the line:

┌────
│ Foo.
└────

pressing <TAB> doesn't indent the line.

[Mosè Giordano]

Hi Denis,

Post by Denis Bitouzé
I'd like to achieve for `myenv' environment the same behavior as the
┌────
│ \documentclass{article}
│ \begin{document}
│ Foo.
│ \end{document}
└────
┌────
│ Foo.
└────
pressing <TAB> doesn't indent the line.

The `LaTeX-document-regexp' option should be what you're looking for.

Bye,
Mosè

[Denis Bitouzé]

Hi Mosè,

Post by Mosè Giordano

Post by Denis Bitouzé
I'd like to achieve for `myenv' environment the same behavior as the
┌────
│ \documentclass{article}
│ \begin{document}
│ Foo.
│ \end{document}
└────
┌────
│ Foo.
└────
pressing <TAB> doesn't indent the line.

The `LaTeX-document-regexp' option should be what you're looking for.

Regexp? Sigh... why life is to complicated?! ;)

Anyway, I couldn't find any reference concerning
`LaTeX-document-regexp'. Any pointer?

[Mosè Giordano]

Post by Arash Esbati
Hi Mosè,

Post by Mosè Giordano

Post by Denis Bitouzé
I'd like to achieve for `myenv' environment the same behavior as the
┌────
│ \documentclass{article}
│ \begin{document}
│ Foo.
│ \end{document}
└────
┌────
│ Foo.
└────
pressing <TAB> doesn't indent the line.

The `LaTeX-document-regexp' option should be what you're looking for.

Regexp? Sigh... why life is to complicated?! ;)

I don't know why it was conceived as a regexp rather than as a list of
environment names (a regexp can be then built automatically).

Post by Arash Esbati
Anyway, I couldn't find any reference concerning
`LaTeX-document-regexp'. Any pointer?

There are a number of AUCTeX's features hidden in the source code,
this increases the pleasure of discovering new features every day ;-)
Jokes apart,

(setq LaTeX-document-regexp "document\\|foo")

and you're done.

Bye,
Mosè

[Denis Bitouzé]

Post by Mosè Giordano

Post by Denis Bitouzé
Regexp? Sigh... why life is to complicated?! ;)

I don't know why it was conceived as a regexp rather than as a list of
environment names (a regexp can be then built automatically).

Good news! :)

Post by Mosè Giordano

Post by Denis Bitouzé
Anyway, I couldn't find any reference concerning
`LaTeX-document-regexp'. Any pointer?

There are a number of AUCTeX's features hidden in the source code,
this increases the pleasure of discovering new features every day ;-)

I don't like speleology 'cause I'm claustrophobic :)

Post by Mosè Giordano
Jokes apart,
(setq LaTeX-document-regexp "document\\|foo")
and you're done.

Indeed, thanks!

But what's the point with `\\|foo'? AFAICS:

┌────
│ (setq LaTeX-document-regexp "myenv")
└────

does the trick as well.

[Mosè Giordano]

Post by Denis Bitouzé
┌────
│ (setq LaTeX-document-regexp "myenv")
└────
does the trick as well.

\(a\|b\)

matches "a" or "b" (but in the variable you don't need to put the
outer parentheses, and you have to double escape the backslash), you
have to include both "document" and "myenv" in order to indent both in
the same way. With your setting I'm not sure the "document"
environment will be indented correctly.

Bye,
Mosè

[Denis Bitouzé]

Post by Mosè Giordano

Post by Denis Bitouzé
┌────
│ (setq LaTeX-document-regexp "myenv")
└────
does the trick as well.

\(a\|b\)
matches "a" or "b" (but in the variable you don't need to put the
outer parentheses, and you have to double escape the backslash), you
have to include both "document" and "myenv" in order to indent both in
the same way. With your setting I'm not sure the "document"
environment will be indented correctly.

I see. So you meant `myenv' instead of `foo', don't you?

Anyway, regarding your explanation, I couldn't see the point with the
`\' before `\|myenv' in:

┌────
│ (setq LaTeX-document-regexp "document\\|myenv")
└────

[Mosè Giordano]

Post by Denis Bitouzé
I see. So you meant `myenv' instead of `foo', don't you?

Yes, I didn't look back to the name of the environment ;-)

Post by Denis Bitouzé
Anyway, regarding your explanation, I couldn't see the point with the
┌────
│ (setq LaTeX-document-regexp "document\\|myenv")
└────

The plain regexp would actually be

document\|myenv

but in Lisp code you have to escape the backslash, so you should use


document\\|myenv

See https://www.emacswiki.org/emacs/RegularExpression#RegexpsInEmacs

Bye,
Mosè

[Denis Bitouzé]

Post by Mosè Giordano

Post by Denis Bitouzé
I see. So you meant `myenv' instead of `foo', don't you?

Yes, I didn't look back to the name of the environment ;-)

Hence my puzzlement :)

Post by Mosè Giordano

Post by Denis Bitouzé
Anyway, regarding your explanation, I couldn't see the point with the
┌────
│ (setq LaTeX-document-regexp "document\\|myenv")
└────

The plain regexp would actually be
document\|myenv
but in Lisp code you have to escape the backslash, so you should use
document\\|myenv
See https://www.emacswiki.org/emacs/RegularExpression#RegexpsInEmacs

OK, thanks!

[Tamas Papp]

Post by Mosè Giordano

Post by Denis Bitouzé
┌────
│ (add-to-list 'LaTeX-indent-environment-list '("myenv" current-indentation))
└────
┌────
│
│ Symbol's value as variable is void: LaTeX-indent-environment-list
└────
despite I'm using the last AUCTeX version: (elpa) auctex-11.89.7.

When you use `add-to-list' is almost always a good idea to wrap it in
a `with-eval-after-load' (or `eval-after-load' in older Emacsens),
(with-eval-after-load "latex"
(add-to-list 'LaTeX-indent-environment-list '("myenv" current-indentation)))
This should do the trick.

An alternative approach is use-package, eg

(use-package latex
:config (add-to-list 'LaTeX-indent-environment-list
'("myenv" current-indentation)))

See https://github.com/jwiegley/use-package

Best,

Tamas

[Denis Bitouzé]

Post by Tamas Papp
An alternative approach is use-package, eg
(use-package latex
:config (add-to-list 'LaTeX-indent-environment-list
'("myenv" current-indentation)))
See https://github.com/jwiegley/use-package

Interesting package I'll probably... use :) Thanks for the pointer.

Best.