[luatex] What happens to glyphs not in the font?
Reinhard Kotucha
reinhard.kotucha at web.de
Wed Mar 26 03:16:08 CET 2014
On 2014-03-25 at 11:55:04 +0100, Martin Schröder wrote:
> 2014-03-24 22:31 GMT+01:00 Arno Trautmann <Arno.Trautmann at gmx.de>:
> > What happens when I input a character that is not available in
> > the current font?
>
> I'd expect
> Missing character: There is no � in font cmr10!
> (maybe even with an "ß" :)
Well, I wouldn't expect � in error messages. And I wouldn't expect it
in the TeX world at all. You certainly know this glyph from web
browsers or Harald's T-shirt ("schei� encoding").
I would expect either ß or ^^df, for example, in the log.
Furthermore, if TeX doesn't complain about a missing glyph then it
might be worthwhile to examine the tfm file. Everything TeX knows
about glyphs of a particular font is in the tfm file.
man tftopl
There might be a few things one can do wrong with dvips/pdfTeX map
files. What happens if an entry maps an 8-bit-aware tfm file to a
7-bit font? At which stage will this error be detected?
Regarding web browsers, I don't think that the glyph � comes from any
font you have installed on your system. This doesn't make sense.
I suppose that web browsers provide a dedicated font containing this
glyph. This would be quite similar to Adobe Reader. It's shipped
with some fonts for internal use too.
Regards,
Reinhard
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