Hi, I have a question regarding ConTeXt, XeTeX and the use of Unicode fonts with diacritic characters which I use quite a lot. (Note also that I'm a novice user.) Consider the following extreme example (using Gentium http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=gentium): ------------------- \definetypeface[lucida][rm][Xserif][Lucida Bright] \definetypeface[gentium][rm][Xserif][Gentium] \setupbodyfont[gentium] \starttext Ṯḥíş ıš ā pìėçẹ ȯf ṭēxt. \stoptext ------------------- If you typeset this with 'texexec --xtx', you get very different results with Gentium vis-a-vis Lucida because of the different glyph repertoires of both fonts. This is a bit unsatisfactory because ConTeXt has all the logic already in place to construct most of these these from base characters plus accents where needed. Of course I can go through my Unicode text manually and change all the missing characters to something like \={e}, but that is not a good solution either; having to sift through your entire document because your publisher demands a different font makes you feel more than a bit stupid :) Is there a way to tell ConTeXt what Unicode characters are available in a font and which ones it has to build using TeX's accent functions? I guess in the above example it would be difficult because no regime gets loaded at all. What would be ideal in my case would be a configurable UTF-8 regime where I could specify the following on a per-typeface basis: - character[ range]s which get passed directly to the underlying engine (useful mainly with XeTeX and possibly with Aleph/Omega) - character[ range]s which get constructed from accents - character[ range]s which get used from a different typescript; for example if I have passages or quotations in a script which isn't available in my typescript, it would be nice to say that "all IPA/Greek/Old Church Slavonic" should come from a substitution typescript where these scripts are available and look good. Is such a thing possible? Philipp
Philipp Reichmuth wrote:
- character[ range]s which get passed directly to the underlying engine (useful mainly with XeTeX and possibly with Aleph/Omega) - character[ range]s which get constructed from accents - character[ range]s which get used from a different typescript; for example if I have passages or quotations in a script which isn't available in my typescript, it would be nice to say that "all IPA/Greek/Old Church Slavonic" should come from a substitution typescript where these scripts are available and look good.
Is such a thing possible?
we're going to built that kind of logic (and a bit more) into luatex / context mkiv ; after that we can see to what extend we can support the xetex way as well after tug 2006 we enter the font part pf the luatex/orientaltex project Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
Hans Hagen schrieb:
Philipp Reichmuth wrote:
- character[ range]s which get passed directly to the underlying engine (useful mainly with XeTeX and possibly with Aleph/Omega) - character[ range]s which get constructed from accents - character[ range]s which get used from a different typescript; for example if I have passages or quotations in a script which isn't available in my typescript, it would be nice to say that "all IPA/Greek/Old Church Slavonic" should come from a substitution typescript where these scripts are available and look good.
we're going to built that kind of logic (and a bit more) into luatex / context mkiv ; after that we can see to what extend we can support the xetex way as well
after tug 2006 we enter the font part pf the luatex/orientaltex project
OK. Sounds great. If you need a tester, I'll be more than happy to provide lots of awkward cases and sift through them. In the meantime, is it possible to enable/disable ConTeXt's UTF-8 handler selectively for pieces of text? such as: \starttext \enableregime[utf] - some Unicode text processed by CoNTeXt for diacritics etc. - \disableregime[utf] - some Unicode text in some other script processed natively by XeTeX - \stoptext That would do the job in the meantime. Philipp
Philipp Reichmuth schrieb:
In the meantime, is it possible to enable/disable ConTeXt's UTF-8 handler selectively for pieces of text?
I just tried -------------------------------- \definetypeface[lucida][rm][Xserif][Lucida Bright] \setupbodyfont[lucida] \starttext Ṯḥíş ıš ā pìėçẹ ȯf ṭēxt. \XeTeXinputencoding "bytes" \enableregime[utf] Ṯḥíş ıš ā pìėçẹ ȯf ṭēxt. \XeTeXinputencoding "utf-8" Ṯḥíş ıš ā pìėçẹ ȯf ṭēxt. \stoptext -------------------------------- which doesn't work. I experimented around with commenting out the XeTeX section in base/regi-uni.tex, but that doesn't do anything. Is there a way of reenabling this from the ConTeXt side? Philipp
Philipp Reichmuth wrote:
Hans Hagen schrieb:
Philipp Reichmuth wrote:
- character[ range]s which get passed directly to the underlying engine (useful mainly with XeTeX and possibly with Aleph/Omega) - character[ range]s which get constructed from accents - character[ range]s which get used from a different typescript; for example if I have passages or quotations in a script which isn't available in my typescript, it would be nice to say that "all IPA/Greek/Old Church Slavonic" should come from a substitution typescript where these scripts are available and look good.
we're going to built that kind of logic (and a bit more) into luatex / context mkiv ; after that we can see to what extend we can support the xetex way as well
after tug 2006 we enter the font part pf the luatex/orientaltex project
OK. Sounds great. If you need a tester, I'll be more than happy to provide lots of awkward cases and sift through them.
In the meantime, is it possible to enable/disable ConTeXt's UTF-8 handler selectively for pieces of text? such as:
\starttext \enableregime[utf] - some Unicode text processed by CoNTeXt for diacritics etc. - \disableregime[utf] - some Unicode text in some other script processed natively by XeTeX - \stoptext
That would do the job in the meantime.
hm, dunno, this is related to active characters (>255) and such; currently the utf handler is disables in xetex mode Hans -- ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
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Hans Hagen -
Philipp Reichmuth