Re: [help-texinfo] Umlaut strangeness

[Andreas Falkenhahn]

On 02.06.2016 at 20:14 Gavin Smith wrote:

> On 2 June 2016 at 19:04, Gavin Smith <address@hidden> wrote:
>> On 1 June 2016 at 16:04, Andreas Falkenhahn <address@hidden> wrote:
>>> Hmm, this is really weird. When using

>>>     @documentencoding ISO-8859-1
>>>     ....
>>>     @chapter 0xdc

>>> the character is rendered correctly on the PDF page but not in the 
>>> bookmarks!
>>> If I leave out the

>>>     @documentencoding ISO-8859-1

>>> then the character is rendered correctly in the bookmarks but not on the
>>> page! This is pretty confusing.

>>> I'm not sure whether you're saying that what I want to achieve is actually
>>> impossible or whether it is possible.... from what you've said I'd infer 
>>> that
>>> it should be possible to use umlauts in the bookmarks *and* on the pages
>>> if I just use ISO-8859-1 because the bookmarks use Latin 1. But it doesn't
>>> work, cf. see above.

>> The problem is the TeX fonts - they don't use ISO-8859-1. So if the
>> document encoding is declared to be ISO-8859-1, each character is
>> transformed into TeX commands to print that character, e.g. 0xdc into
>> @"U. That in turn becomes U when the PDF outline is generated.

>> This could in theory be changed, but there are complications, like any
>> differences between ISO-8859-1 and the PDFDocEncoding encoding. Only
>> ISO-8859-1 could be supported this way.

> For what it's worth, the following simple patch gave the correct
> character "Ü" in both the outline and the main text:

> Index: texinfo.tex
> ===================================================================
> --- texinfo.tex (revision 7190)
> +++ texinfo.tex (working copy)
> @@ -1427,6 +1427,7 @@
>        % we use for the index sort strings.
>        %
>        \indexnofonts
> +      \passthroughcharstrue
>        \setupdatafile
>        % We can have normal brace characters in the PDF outlines, unlike
>        % Texinfo index files.  So set that up.

> I'm not confident that this patch is completely correct.

Tried it, but it yields an error here:

./test.texi:36: Undefined control sequence.
@pdfmakeoutlines ...nofonts @passthroughcharstrue

Does this require a newer texi2pdf version? I think my version is from
2012 or so, so quite a few years old...

-- 
Best regards,
 Andreas Falkenhahn                            mailto:address@hidden