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From: gerard.vermeulen@posteo.net
To: Ihor Radchenko <yantar92@posteo.net>
Cc: "Juan Manuel Macías" <maciaschain@posteo.net>,
	"Pedro Andres Aranda Gutierrez" <paaguti@gmail.com>,
	Timothy <orgmode@tec.tecosaur.net>,
	"Emacs orgmode" <emacs-orgmode@gnu.org>
Subject: Re: [BUG] ox-latex produces broken references to src code listings without caption (was: [BUG] org-lint tells to move #+name to wrong place in results block)
Date: Fri, 26 Jan 2024 11:04:25 +0000	[thread overview]
Message-ID: <1516db648e4c36ce803c8388b70ea0d3@posteo.net> (raw)
In-Reply-To: <87r0i5lh4r.fsf@localhost>



On 25.01.2024 13:41, Ihor Radchenko wrote:
> gerard.vermeulen@posteo.net writes:
> 
>> I have found that CAPTION keywords  in the "name-result-example" in 
>> the
>> manual are essential to produce correct links.
> 
> It should not be essential. What you demonstrated is two bugs in Org 
> mode.
> 
>> In case the relevant blocks have e.g. ":exports both", Org handles
>> this, but:
>> 1. HTML export requires captions to produce links with unequivocal
>>     "link texts" which are numbers in the HTML output.
> 
> Fixed, on main.
> https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=ea529007d

I confirm that it is fixed.

> 
>> 2. LaTeX export requires captions to produce captions with labels like
>>     =\caption{\label{path}desc}=.
> 
> `org-latex-link' assumes that it is safe to use
> \ref{<org-latex--label ...>} in order to refer to an existing src 
> block.
> However, it is not true.
> 
> `org-latex-src-block--engraved', `org-latex-src-block--minted',
> and `org-latex-src-block--listings' only produce a label when src block
> has a caption.
> 
> We should generally not need to put a caption in order to refer to a
> source block listing. At least, it does not look like we need it from
> https://tex.stackexchange.com/questions/438260/referencing-without-captions-appearing-but-keeping-numbering
> 
> Thoughts? Ideas?

I do not see how to put the LaTeX hypertarget inside listings where it 
is
needed, because those listings are not floating.

I looked at `org-latex-src-block--verbatim' that uses the LaTeX
captionof macro, by exporting
--- begin narrow lines below ---
#+caption: caption or comment
#+name: name
#+begin_src emacs-lisp
(+ 1 2)
#+end_src

Link \ref{name}.
--- end narrow lines above

But, I cannot get the captionof macro working after:
exporting the snippet above using `org-latex-src-block--listings'
without caption and adding the captionof macro by hand
(LuaLaTeX does not compile).

> 
>> Tested on example below:
>> Produced by listing [[IN]].
>> 
>> #+name: OUT
>> #+RESULTS: IN
>> #+begin_src emacs-lisp :exports code
>> 6
>> #+end_src
>> 
>> #+header: :wrap "src emacs-lisp :exports code"
>> #+name: IN
>> #+begin_src emacs-lisp :exports both
>> 6
>> #+end_src
>> 
>> Listing [[IN]] produces listing [[OUT]].
>> 
>>  From inspecting HTML or LaTeX output using this example
>> for the difference between with and without captions it is
>> easy to see that only with captions the output is correct.

Regards -- Gerard


      reply	other threads:[~2024-01-26 11:05 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-22 17:47 [BUG] org-lint tells to move #+name to wrong place in results block gerard.vermeulen
2024-01-22 18:15 ` Ihor Radchenko
2024-01-22 18:50   ` gerard.vermeulen
2024-01-22 18:59     ` Ihor Radchenko
2024-01-23  8:34       ` [PATCH] Make an org-lint warning more helpful gerard.vermeulen
2024-01-24 15:49         ` Ihor Radchenko
2024-01-23 13:55       ` [BUG] org-lint tells to move #+name to wrong place in results block gerard.vermeulen
2024-01-25 12:41         ` [BUG] ox-latex produces broken references to src code listings without caption (was: [BUG] org-lint tells to move #+name to wrong place in results block) Ihor Radchenko
2024-01-26 11:04           ` gerard.vermeulen [this message]

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