On 2017-03-20, Bernt Lie wrote:
> On 2017-03-20, Bernt Lie wrote:
>> Sent: søndag 19. mars 2017 16.28

>> I have a problem with LuaTeX / XeTeX


>> Not completely related, but I get a "Missing glyphs!" (two times) with 
>> LyX 2.2.2 on Windows 10. The source of this missing glyphs are two 
>> occurrences of BibTeX references containing the character {\AA} (I 
>> assume this is the source – the error message showed up after I 
>> included these references…).

> The latex macro \AA is translated to 

> 212B  ANGSTROM SIGN
>       * non SI length unit (=0.1 nm) named after A. J. Ångström, Swedish 
> physicist

> The Unicode standard says:

>       * preferred representation is 00C5

> 00C5  LATIN CAPITAL LETTER A WITH RING ABOVE

> Both character look the same but some fonts only contain 00C5.

> You can solve this by changing \AA to \r{A} in the bibtex file or by
> selecting a font with 212B.

> Günter
> --

> Hm. The LaTeX macro \AA *should* be translated to the Scandinavian
> letter Å, at least according to some LaTeX manuals I have read through
> the years. 

* 8-bit TeX does not distinguish Å and Å.

* With xunicode sty, it is LATIN CAPITAL LETTER A WITH RING ABOVE for both:

  \DeclareUTFcharacter[\UTFencname]{x00C5}{\AA}
  \DeclareUTFcomposite[\UTFencname]{x00C5}{\r}{A}

* With tuenc.def \r{A} is Å, too:

  \DeclareTextComposite{\r}             \UnicodeEncodingName{A}{"00C5}

  but \AA is not defined.

> As in Ångström (Swedish name) or Årdal (Norwegian name).
Jag vet.

> Danes tend to use Aa instead of Å, but the Danish alphabet includes Å.

Aa is the transkription in case there are no accents (like ue for ü).

> I tried the suggestion of replacing \AA with \r{A}. Result?
> * The typesetting in the bibliography is correct and the same as for
>   when I used \AA

Fine.

> * I still get the same missing glyphs message

Strange. What engine and font do you use?

> * Now, I cannot search for Å in JabRef -- if I use \AA, I can search
>   for Å in JabRef.

This is a JabRef shortcoming. Maybe you can use a literal Å?

Günter

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