Hi. (I'm reading this ML but rarely ask questions.) I try to understand the purpose of 'setupbackend'. Consider the following three examples: ---------------------------------------------------------------------- <example name="ex1.tex"> \setupbackend[export=yes] \starttext This is simple example. No font switching, no math. \stoptext </example> ---------------------------------------------------------------------- <example name="ex2.tex"> \setupbackend[export=yes] \starttext This is second example. This time we try to use font switching mechanism: This is normal, but this \bold{one is bold}. Normal again. \stoptext </example> ---------------------------------------------------------------------- <example name="ex3.tex"> \setupbackend[export=yes] \starttext This is third example with 'backend' 'export=yes'. Now we try simple math: This is inline formula $E=mc^{2}$. This is display formula \startformula E=mc^{2} \stopformula \stoptext </example> ---------------------------------------------------------------------- I compiled them with context (mkIV, context minimal) and got ex{1,2,3}.export. I thought that I get not only the document content but also its logical structure (for example some markup for font switching). Is it true that 'backend' only output document content not its logic strcuture? Does it work with math? The third example gives for math only not letters. I attached the resulted export files. P.S. Then I saw the announce about 'backend' & 'export=yes' I thought that context would be good tool for notes. I imagine that I could wrote a text file and make from it either pdf (for printing/screening) or html (for screening) or may be convert xml (using existing tools and methods) to other formats (rtf/odt/xhtml) that would contain math, images, tables. But seems that I was wrong or this will be in future of the backend? --- WBR, Vladimir Lomov -- If you make people think they're thinking, they'll love you; but if you really make them think they'll hate you.
On 8-11-2010 3:52, Vladimir Lomov wrote:
I compiled them with context (mkIV, context minimal) and got ex{1,2,3}.export. I thought that I get not only the document content but also its logical structure (for example some markup for font switching).
Bold in itself is not structure so best tag it as (e.g.) important: \setupbackend[export=yes] \definestartstop[important][style=bold] \starttext This is second example. This time we try to use font switching mechanism: This is normal, but this \important{one is bold}. Normal again. \stoptext
Is it true that 'backend' only output document content not its logic strcuture? Does it work with math? The third example gives for math only not letters.
Math becomes: This is inline formula <math> <mrow> <mi>๐ธ</mi> <mo>=</mo> <mi>๐</mi> <msup> <mi>๐</mi> <mn>2</mn> </msup> </mrow> </math> . <break/> This is display formula <formula> <formulacontent> <math> <mrow> <mi> ๐ธ</mi> <mo>=</mo> <mi>๐</mi> <msup> <mi>๐</mi> <mn>2</mn> </msup> </mrow> </math> </formulacontent> </formula>
I attached the resulted export files.
P.S. Then I saw the announce about 'backend'& 'export=yes' I thought that context would be good tool for notes. I imagine that I could wrote a text file and make from it either pdf (for printing/screening) or html (for screening) or may be convert xml (using existing tools and methods) to other formats (rtf/odt/xhtml) that would contain math, images, tables. But seems that I was wrong or this will be in future of the backend?
indeed it should be possible to use context that way and afaik the export is already quite okay (you might need a recent luatex as there have been issues with attributes in math mode that were sorted out a while ago) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
Hi Hans. ** Hans Hagen [2010-11-09 17:40:44 +0100]:
On 8-11-2010 3:52, Vladimir Lomov wrote:
I compiled them with context (mkIV, context minimal) and got ex{1,2,3}.export. I thought that I get not only the document content but also its logical structure (for example some markup for font switching).
Bold in itself is not structure so best tag it as (e.g.) important:
\setupbackend[export=yes]
\definestartstop[important][style=bold]
\starttext
This is second example. This time we try to use font switching mechanism: This is normal, but this \important{one is bold}. Normal again.
\stoptext So, if I want to get structured xml file I need to either redefine all usual command to be tagged (start/stop) and, that is more logical define my own tag commands. IMHO the use of 'important' as in example above is logical, the actual presentation of 'importtant' words could be define separately and in different ways (I like idea of xml+styles).
Is it true that 'backend' only output document content not its logic strcuture? Does it work with math? The third example gives for math only not letters.
Math becomes:
This is inline formula <math> <mrow> <mi>๐ธ</mi> <mo>=</mo> <mi>๐</mi> <msup> <mi>๐</mi> <mn>2</mn> </msup> </mrow> </math> . <break/> This is display formula <formula> <formulacontent> <math> <mrow> <mi> ๐ธ</mi> <mo>=</mo> <mi>๐</mi> <msup> <mi>๐</mi> <mn>2</mn> </msup> </mrow> </math> </formulacontent> </formula> E-er, yes. I don't see characters (my terminal use UTF8 and good font) even now. But I saw them in web intterface to ML (contextgarden because another shows something different). Also I saw tthem in Emacs. AFAIU, this is in private region of Unicode, these are _italic_ E, m and c. I thought that there should be letter from ASCII (codes < 127).
I attached the resulted export files.
P.S. Then I saw the announce about 'backend'& 'export=yes' I thought that context would be good tool for notes. I imagine that I could wrote a text file and make from it either pdf (for printing/screening) or html (for screening) or may be convert xml (using existing tools and methods) to other formats (rtf/odt/xhtml) that would contain math, images, tables. But seems that I was wrong or this will be in future of the backend?
indeed it should be possible to use context that way and afaik the export is already quite okay (you might need a recent luatex as there have been issues with attributes in math mode that were sorted out a while ago) Well, this were simple tests. I'll make more complex one in next weeks. Texts, with font switching, maths, images, tables. I want to have tool using which I could convert from one source to several formats (pdf, xhtml, rtf/odt).
--- WBR, Vladimir Lomov -- Have a nice day!
On 10-11-2010 3:24, Vladimir Lomov wrote:
So, if I want to get structured xml file I need to either redefine all usual command to be tagged (start/stop) and, that is more logical define
Did you test the mechanism? Most environments are already dealt with. The only think that you need to keep in mind is that you use \startchapter ... \stopchapter and \startitem ... \stopitem i.e. avoid implicit structure
E-er, yes. I don't see characters (my terminal use UTF8 and good font) even now. But I saw them in web intterface to ML (contextgarden because another shows something different). Also I saw tthem in Emacs. AFAIU, this is in private region of Unicode, these are _italic_ E, m and c. I thought that there should be letter from ASCII (codes< 127).
mkiv uses (and exports) proper math unicode characters .. nothing private about that; any renderer of xml should be able to deal with it Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On Wed, Nov 10, 2010 at 03:42:58PM +0100, Hans Hagen wrote:
On 10-11-2010 3:24, Vladimir Lomov wrote:
E-er, yes. I don't see characters (my terminal use UTF8 and good font) even now. But I saw them in web intterface to ML (contextgarden because another shows something different). Also I saw tthem in Emacs. AFAIU, this is in private region of Unicode, these are _italic_ E, m and c. I thought that there should be letter from ASCII (codes< 127).
mkiv uses (and exports) proper math unicode characters .. nothing private about that; any renderer of xml should be able to deal with it
You under estimate the wisdom of all the developers out there who never thought of Unicode beyond plane 0 (having played with Unicode math in SVG, which is XML, 5 out of 5 SVG implementations that I tested have a bug or another related to broken surrogate pairs handling). Regards, Khaled -- Khaled Hosny Arabic localiser and member of Arabeyes.org team Free font developer
participants (3)
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Hans Hagen -
Khaled Hosny -
Vladimir Lomov