[Bug-AUCTeX] Re: previews hiding significant information

[Andreas Matthias]

David Kastrup wrote:

> Andreas Matthias <address@hidden> writes:
> 
>> David Kastrup wrote:
>> 
>>> Andreas Matthias <address@hidden> writes:
>>  
>>>> \documentclass[a4paper]{article}
>>>> \usepackage{graphicx,afterpage}
>>>> \begin{document}
>>>> \afterpage{\includegraphics{hog}}
>>>> foo
>>>> \cleardoublepage
>>>> bar
>>>> \end{document}
>>> 
>>> Previews hide the corresponding source code.  And \cleardoublepage
>>> _is_ the corresponding source code.
>> 
>> Why is \cleardoublepage the corresponding source code? I don't
>> understand that.
> 
> Because it executes the macro.

Oh, \clearpage ejects \afterpage as well. I wasn't aware of that.

>> But why does adding \PreviewMacro*\afterpage just work if
>> \usepackage[active,graphics]{preview} is added as well? Letting
>> emacs insert the \usepackage command does not work.
> 
> Emacs uses \AtBeginDocument, the style is loaded too late.
> 
> Try
> 
> \AtBeginDocument{\ifx\ifPreview\undefined \else
>   \PreviewMacro*\afterpage \fi}
> 
> in the preamble, or read the docs about how to do it in a separate file.

Ok. I think I should have grasped that myself.
I'll have a rest.

Thanks for the help.

Ciao
Andreas