Re: [NTG-context] Unicode stuff (was: Re: Specifying BibTeX engine)
On 11/4/06, Philipp Reichmuth wrote:
I've been starting to reuse some of this work in a script to do active
character assignment for XeTeX depending on what glyphs are present in
an OpenType font, so that those characters for which the font doesn't
have a glyph are generated by ConTeXt. Basically I want to produce
something like this:
\ifnum\XeTeXcharglyph010D=0
\catcode`č=\active \def č{\ccaron}
\else
\catcode`č=\letter
\fi % ConTeXt knows this letter - better hyphenation
\ifnum\XeTeXcharglyph1E0D=0
\catcode`ḍ=\active \def ḍ{\b{d}}
\else
\catcode`ḍ=\letter
\fi % ConTeXt doesn't know this letter
No reason for not adding it.
(with \other, respectively, for non-letters). Being somewhat of a
novice to TeX programming, I'm not sure if this will work, though, and
I'm also not sure if it's better to generate static scripts that do this
for every font (so the resulting TeX file is a font-specific big list of
\catcode`$CHARACTERs) or to do this dynamically on every font change,
maybe limited to selectable Unicode ranges (which is more general but
also a lot slower).
Generating this for every single font would be stupid. This should be
part of low-level XeTeX (Jonathan has promised to look into it some
time). In my opinion the best way to deal with it would be the ability
to define a fall-back definition for every missing letter in a font.
Consequently, if you have ddotbelow missing in your font, XeTeX
would ask ConTeXt if some fallback definition has been provided for
that glyph, If yes, it would fall back to it, \b{d}, but if the
glyph would be present in that font, XeTeX would use it.
I'd prefer to see a context encoding added to GNU recode for the
benefit of future archeologists trying to decipher ancient documents.
That would be better I guess, but isn't ConTeXt encoding a moving target
in that characters can still get added? Or is the list fixed to AGL
glyph names and nothing else?
No, it's certainly not fixed to AGL. But I wouldn't object adding it
to GNU recode (on top of (La)TeX which also recognizes \v, \b, ...)
if someone would decide to make a good revision of it and if more
people think that it would be useful (and if developers are open to
that idea). I try to use Unicode when writing sources whenever
possible.
Mojca
PS for Philipp: I didn't try out your definitions, but you have a cut
out of an older conversation as an example of what certainly doesn't
work under XeTeX ;)
(answer was written by Jonathan Kew) I was trying write a few macros
to support the old tfm-based fonts, but figured out that that was the
wrong starting point (and also other reason than yours).
\catcode`ð=\active \defð{^^f0}
\starttext
Testing ... ð
\stoptext
and it seems to enter some infinite loop when ð is encountered (I can
define any other letter as well, but only ^^f0 is causing problems).
No, this seems to me like it's the wrong way to define the character!
And I think you would have the same problem with other letters if
trying to define them as their own codes; the ones that work for you
must be getting defined as *different* codes from the original input.
The ^^xx notation is converted to a literal character by TeX's input
scanning routine, so it behaves exactly as if it were that character
itself. And ^^f0 in Latin-1 (or Unicode) is the ð character. So this
definition works exactly the same as if you were to say
\catcode`ð=\active \defð{ð}
which is clearly recursive.
Given that you don't need to remap ð in the input to some other
Unicode character for printing, there should be no need for this at
all. The only reason to use a definition like this would be if the
input text used a *different* character where you want to print eth;
or you want to print something *other* than character F0 for the
input ð.
In general, a safe form of the definition would be to use \chardef:
\catcode`ð=\active \chardefð=F0
This makes ð into a macro that expands to the character F0; there is
an important difference between this and ^^f0, which actually
becomes the character ð itself as the input is read (and therefore
inherits its catcode, definition, etc).
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Re: [NTG-context] unic-xxx.tex glyph lists: minor bugs, questions
On 11/5/06, Hans Hagen wrote:
Philipp Reichmuth wrote:
I've been writing a script that sifts through the unic-xxx.tex files to
get a readable mapping what Unicode characters are supported using
\Amacron-style names.
mtxtools can create such lists using the unicode consotium glyph table,
mojca's mapping list and enco/regi files
we use mtxtools to create the tables needed for xetex (used for case
mapping) and luatex (more extensive manipulations)
I have mtxtools.bat, but no mtxtools.rb here.
Are the
unic-xxx files automatically generated or maintained by hand?
maintained by hand, again, just send me the fixed file, but we need to
make sure that the fix is ok (i.e. works as expected)
Although there should be no reason for not generating them
automatically. I did that for regime files (I only wrote a script,
executed it and Hans included the files, so it's only semi-automatic;
it would be polite from me if I managed to incorporate that into
existing [whateverthename]tools.rb).
Incidentally, it would be trivial now to put the list of ConTeXt glyphs
on the Wiki, if anyone's interested.
there is a file contextnames.txt in the distributions (maintained by
mojca), while the not yet distributed char-def.lua has the info for luatex
If you find errors there, please let me know. (Missing letter in
Cyrillic was due to missing position in Unicode).
I wanted to use this to work towards better support for the whole range
of ConTeXt glyphs with OpenType fonts under XeTeX, by reading what
ConTeXt glyphs are available in a font and building a list of
\catcode`ā=\active \def ā {\amacron}-style list for the rest.
(Unfortunately this kind of list would be font-specific, but the generic
alternative would be a huge list of active characters with an
\ifnum\XeTeXcharglyph0 macro behind it, and that would probable be
quite slow.) I wonder if there is a more intelligent way to achieve
this goal; since part of the logic for mapping code points into glyph
macros exists already, it would be easier if there was a way to reuse that.
best take a look at mtxtools; if needed we can generate the definitions
; concerning speed, it will not be that slow, because tex is quite fast
on such tests (unless XeTeXcharglyph is slow due to lib access); the
biggest thing is to make sure that things don't expand in unwanted ways.
(i must find time to update my xetex bin ; i must admit that i never
tried to use open type fonts in xetex (the mac is broken)
But OpenType fonts also work on Linux Windows.
The best way out would be if I could enable ConTeXt's UTF-8 regime while
running XeTeX in \XeTeXinputencoding=bytes mode, but I haven't gotten
that to work yet.
maybe mojca has
You could theoretically comment out \beginXETEX \expandafter \endinput
\endXETEX in regi-utf.tex, but that's not the best idea.
Mojca
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Re: [NTG-context] Header number separator
On 11/7/06, Aditya Mahajan [EMAIL PROTECTED] wrote: I need this functionality for a project (IEEE conference style), so here is hack to get the feature. The referencing also works. Use with caution, can break existing macros. Wow, thanks a lot! This works as expected. In what situation can it break existing macros? I intend to use that extensively but in a fairly simple document (a thesis... yeah, another one in ConTeXt!). Is there anything I should _not_ do? Thanks again for your help! It's always greatly appreciated. Jeff ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] unic-xxx.tex glyph lists: minor bugs, questions
The best way out would be if I could enable ConTeXt's UTF-8 regime while running XeTeX in \XeTeXinputencoding=bytes mode, but I haven't gotten that to work yet. That would mean that you loose the whole range of glyphs scripts outside of the scope which ConTeXt supports (you would land almost at the level of pdfTeX again). For most european users that might still be something reasonable, but I wouldn't go that way. maybe mojca has (little correction to what I wrote in my previous mail) If you were really looking for that part of code - simply replace \expandafter \endinput inside XETEX block in regi-utf.tex with \XeTeXinputencoding=bytes. Then \enableregime[utf-8] will mean that ConTeXt took control over utf instead of XeTeX. From what I understood on the wiki, it probably used to be that way at the beginning, but then Hans changed his mind and decided to ignore \enableregime[utf] completely when processing with XeTeX. Mojca ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] postoned text and headers
Any ideas on this? I have tried everything I can think of, to turn
off headers on a postponed page, including using page[blank], etc. but
nothing seems to work quite right. Attached is a sample showing the
issue. This is one of the last issues I have (I think).
Thanks,
paul
On 11/7/06, Paul Jones [EMAIL PROTECTED] wrote:
Hello everyone,
I have a tex document where I postpone (\startpostponing) certain
pages until later in the document. On those pages I would like the
headers/footers turned off. I have tried \noheaderandfooterlines, and
setting the header to high, but neither seem to work. Have I done
something wrong or is there another way to do this? Here is an
example of what I tried to describe.
%output=pdf
\setuppagenumbering[conversion=numbers, location=]
\setupheadertexts[pagenumber][][][pagenumber]
\starttext
\startpostponing[+2]
\page
\noheaderandfooterlines
%this will generally be a fullbleed picture or set of pictures on a
page by themselves
\framed[frame=on, width=\textwidth, height=\textheight]
{\dorecurse{1}{\input zapf}}
\page
\stoppostponing
\dorecurse{20}{\input davis }
\stoptext
Thanks in advance for any help,
paul
headers.tex
Description: TeX document
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Re: [NTG-context] Header number separator
On Thu, 9 Nov 2006, Jeff Smith wrote: On 11/7/06, Aditya Mahajan [EMAIL PROTECTED] wrote: I need this functionality for a project (IEEE conference style), so here is hack to get the feature. The referencing also works. Use with caution, can break existing macros. Wow, thanks a lot! This works as expected. In what situation can it break existing macros? I intend to use that extensively but in a fairly simple document (a thesis... yeah, another one in ConTeXt!). Is there anything I should _not_ do? In principle, it should work fine for european languages. Lot of the trickery with numbers and number formats is present because ConTeXt also supports other languages like chinese and arabic. @@longsectionnumber is used a lot by the sectioning macros, and I do not completely understand what is happening here. My solution was based on trial and error and figuring out what works. Moreover, it changes a core feature of ConTeXt. I am associating separators with sectioning levels rather than with heads. Right now, in principle, you can have different separators for different heads at the same level. For example \setuphead[remark][section=section-4,separator=.] \setuphead[note][section=section-4,separator=-] With this change, this will no longer work. So, the macro is not backward compatible, and thus can break existing code. If you have only one head at each sectioning level, and do not plan to use Chinese or Arabic, it should work fine. Atleast for my simple, 5 page document, it works correctly :-) Aditya ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
[NTG-context] combining multiple accents
Hello,
I always thought that any accent can be placed on any character in TeX.
However, probably due to some boxes, this fails to work sometimes.
So how can I create a with cedilla and ring above for example: \r{\c a}?
(Yes, I know that I can switch the order: \c{\r a} works as expected,
but I need to create more complicated cases in general and I don't
want to depend on whether the accent will be placed properly or not.)
Is there any simple cure for that?
Thanks a lot,
Mojca
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[NTG-context] Chemical structure formula flows out
Hello I've been studying PPCHTEX these days, it's very powerful, and I cannot control it well. I just wrote a chemical struture like: \startchemical [size=small,scale=small,width=fit,height=fit,frame=on] \chemical[SIX,SB13456,DB2,Z] [C,C,C,C,C,C] \chemical[PB:Z1,ONE,Z0,SB18,Z8,MOV1,ONE,DB1,SB7,Z07,MOV1,ONE,SB13,Z03,MOV1,ONE,SB1,DB7,Z017,PE] [C,H,C,H,C,H,C,CH_3,O] \chemical[PB:Z2,ONE,Z0,SB1,Z1,PE] [C,CH_3] \chemical[PB:Z3,ONE,Z0,SB3,Z3,PE] [C,H] \chemical[PB:Z4,ONE,Z0,SB45,Z45,PE] [C,H,H] \chemical[PB:Z5,ONE,Z0,SB56,Z56,PE] [C,CH_3,H] \chemical[PB:Z6,SIX,Z3,SB23,Z24,PE] [C,CH_3,CH_3]\stopchemical only the carbon-ring is in the frame, I think maybe PB:..,PEpair does not change the size of the picture. I know I can use like \startchemical [size=small,scale=small,width=9000,height=5000,left=3000] to specify the size, but I need to try several times to get a correct version. Is there any parameter that do this staff automatically? Thanks -- Sincerely yours,ChenZhi-chu Chen | Shanghai Synchrotron Radiation Facility No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China tel: 086 21 5955 3405 | zhichu.chen.googlepages.com | www.sinap.ac.cn ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
