Re: [AUCTeX-devel] reftex patch to support resolved labels

[Tim Toolan]

Quoting Ralf Angeli <address@hidden>:

> * Tim Toolan (2008-12-01) writes:
>
> > I am making the suggested changes to this patch, but am still
> > concerned about interaction with preview-latex.  Because the method
> > used to resolve labels requires that the .aux files are consistent
> > with whatever typeset output the user is looking at, and preview-latex
> > generates typeset output without corresponding .aux files, it is
> > possible to get incorrect labels when using preview-latex.
>
> Perhaps I am misunderstanding the issue, but couldn't you just disable
> the feature if no .aux file is present?

If no .aux file is present, then it is straightforward to disable the feature.

The concern is that someone:
1) Runs latex and generates the typeset document along with the .aux files.
2) Edits a large portion somewhere early on in the document, and  
regenerates previews for the entire document.
3) Uses the method provided by this patch to refer to an equation in  
the later portion of the document using the equation number they see  
in the typeset preview.

Because there is currently no way to get the .aux information from the  
generated previews this will produce the wrong label.  The reason it  
is wrong is because that label has been renumbered, but it was not  
recorded in any .aux file.

If the .aux information was available from the previews, it would be  
possible to keep the information consistent.  And since the  
information does not have to be correct, only consistent between the  
.aux files and what typeset information the person is looking at, it  
should be possible to clue them in to what is going on when there is  
inconsistencies.

> > Should I
> > disable this mode for now when preview-latex is being used, or should
> > we try to work out the problem before this patch is applied?
>
> See above.
>
> By the way, do you have a copyright assignment for Emacs or RefTeX on
> file at the FSF?
>
> --
> Ralf