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[ pdftex-Bugs-747 ] \letterspacefont and \pdffontexpand, again
by noreply＠sarovar.org 28 Jun '07

28 Jun '07

Bugs item #747, was opened at 2007-03-09 03:09 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=747&group_id=106 Category: hz Group: v1.40.1 Status: Open Resolution: Accepted Priority: 5 Submitted By: Robert (schlcht) Assigned to: The Thanh Han (hanthethanh) Summary: \letterspacefont and \pdffontexpand, again Initial Comment: When expanding a letterspaced font, the base font will be expanded, too, resulting in the error `font has been expanded with different parameters' when the base font is expanded again: \letterspacefont\lsfont\font 100 \pdffontexpand\lsfont 20 20 5 autoexpand \pdffontexpand\font 20 20 5 autoexpand Z\bye ---------------------------------------------------------------------- >Comment By: The Thanh Han (hanthethanh) Date: 2007-06-28 18:42 Message: Logged In: YES user_id=710 expanding a letterspaced fonts always implies that the base font is expanded. In other words, it's impossible *not* to expand the base font when expanding a letterspaced font. thanks for further testing. It looks like a bug in checking font expansion spec. fwiw, font stretch limit is always fixed to [0..1000] and font shrink limit to [0..500]. Thus giving a negative value has the same effect like giving 0. I will play with \copyfont to see if it helps. ---------------------------------------------------------------------- Comment By: Robert (schlcht) Date: 2007-06-28 14:01 Message: Logged In: YES user_id=2217 If we can get rid of the error message, I think it can be left at that. Mind you, the problem is not how to expand a letterspaced font but how to *not* expand the base font when expanding a letterspaced font. That expanding a letterspaced font results in expansion of the base font can be documented as a feature, IMO. Here are some more clues: The error message seems to be related to the sign of the stretch parameter. First of all, with \letterspacefont\lsfont\font 100 \pdffontexpand\lsfont 20 20 5 autoexpand the base font will be expanded, however it will never be shrunk. Then, \letterspacefont\lsfont\font 100 \pdffontexpand\lsfont 20 20 5 autoexpand \pdffontexpand\font 20 -20 5 autoexpand doesn't yield an error. Neither does: \pdffontexpand\lsfont 20 -20 5 autoexpand \pdffontexpand\font 20 -20 5 autoexpand However, here comes the error again: \pdffontexpand\lsfont 20 -20 5 autoexpand \pdffontexpand\font 20 20 5 autoexpand If you expand the base font first, it's OK in any case, also with different signs. ---------------------------------------------------------------------- Comment By: Taco Hoekwater (taco) Date: 2007-06-28 07:37 Message: Logged In: YES user_id=1608 That sounds nice, I like it. ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-06-28 06:45 Message: Logged In: YES user_id=710 I agree this is an ugly solution, which has its origin in a design mistake. However the problem here is not only how to deal with the error message, but the point is how to use font expansion with a letterspaced font. Please give it a thought so we can come up with an acceptable workaround. If we want everything to be clean, there are more things that have to be thrown away. what about this: have a primitive \copyfont which creates a copy of a font. Example: \letterspacefont\lsfont\font 100 \copyfont\lsxfont\lsfont \pdffontexpand\lsxfont 20 20 5 autoexpand ---------------------------------------------------------------------- Comment By: Taco Hoekwater (taco) Date: 2007-06-27 11:43 Message: Logged In: YES user_id=1608 If there is no clean way of solving the problem, I'd rather just document the error message as a feature. I find \pdfnewexpandfont very ugly (sorry Thanh). ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-06-24 10:46 Message: Logged In: YES user_id=710 here is a patch that introduces a new primitive \pdfnewexpandfont. Usage: \font\f=cmr10 \pdfnewexpandfont\fx \f 20 20 5 autoexpand Note that \pdfnewexpandfont generates \fx by loading a TFM corresponding to \f first, then applies font expansion in the same way like "\pdffontexpand\fx 20 20 5". So when \f is a font that doesn't have a corresponding TFM (for example, because it was generated in pdftex memory only), the above command won't work. In particular, the following doesn't work: \font\f=cmr10 \letterspacefont\lsfont\f 100 \pdfnewexpandfont\fx \lsfont 20 20 5 autoexpand since \lsfont doesn't have a corresponding TFM but was generated by \letterspacefont. To create a letterspaced+expanded font, one can use: \font\f=cmr10 \letterspacefont\fx\f 100 \pdffontexpand\fx 20 20 5 autoexpand things are gettting messy... sorry about that. Testing/comments welcome. ---------------------------------------------------------------------- Comment By: Robert (schlcht) Date: 2007-04-01 00:44 Message: Logged In: YES user_id=2217 Fine for me and microtype. ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-31 09:52 Message: Logged In: YES user_id=710 either name is ok with me. We need a new pritimive to load a new font and expand it, since the current one doesn't load a new font and hence is making trouble. I would wait for a while to see how Robert sees it before making any change. ---------------------------------------------------------------------- Comment By: Nobody (None) Date: 2007-03-19 11:07 Message: Logged In: NO Hello, I do not think that \pdfexpandfont is a good name for a new primitive, as it is too easy to confuse with \pdffontexpand. What about \pdfexpandnewfont, as -- if I understand correctly -- a new font is loaded? Jonathan P.S: Thank you for creating pdfTeX! ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-10 20:18 Message: Logged In: YES user_id=710 Phil Taylor has a suggestion that seems great to me: introduce a new primitive \pdfexpandfont instead. How do you see it? ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-03-10 19:24 Message: Logged In: YES user_id=421 Forget that comment. Of course a change of \pdffontexpand has to be considered carefully. By you. :-) ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-03-10 19:22 Message: Logged In: YES user_id=421 No. It's an undocumented primitive. ;-) ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-09 17:28 Message: Logged In: YES user_id=710 sigh. A mistake when implementing the \pdffontexpand primitive: it should load a new font for expansion, instead of expanding a loaded font. Too late for change now? ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=747&group_id=106

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[ pdftex-Bugs-824 ] Bus error caused by loading an image into a format file
by noreply＠sarovar.org 28 Jun '07

28 Jun '07

Bugs item #824, was opened at 2007-06-25 23:22 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=824&group_id=106 Category: Image inclusion Group: v1.40.3 Status: Open Resolution: Accepted Priority: 5 Submitted By: Robin Houston (robinhouston) Assigned to: Martin Schröder (oneiros) Summary: Bus error caused by loading an image into a format file Initial Comment: I have written a tool that speeds up repeated compilation of a source file, by generating a format from the preamble of the document, and then using it to compile the body. One user reported a crash when using this tool with a custom letterhead class; the class in question may be found at http://www.soe.ucsc.edu/~elm/LaTeX/ucletter.cls (though note that a simpler demonstration is attached to this report). The bug is triggered by the fact that this class loads an image during the processing of the preamble (i.e. during the processing of the .ini file) and saves it in a box. When this box is used, during the compilation of the body, pdftex crashes. This does work with ordinary (non-PDF) TeX, so the problem is specific to PDFTeX. The attachment contains a simple demonstration of the problem. Unpack it and run 'make'. ---------------------------------------------------------------------- >Comment By: Robin Houston (robinhouston) Date: 2007-06-28 16:01 Message: Logged In: YES user_id=4579 Bravo! I was ready to embark on this myself, so I'm delighted to be spared the trouble. It passes all the tests I've tried so far. ---------------------------------------------------------------------- Comment By: Taco Hoekwater (taco) Date: 2007-06-28 11:57 Message: Logged In: YES user_id=1608 Here is a patch that fixes the problem by dumping and restoring the image _meta information_ to/from any generated format. The image _data_ is not included (that would be really hard to do in a portable way), and therefore the undumping routines have to redo most of the work of \pdfximage, but this is transparent to the user except that the tests for \pdfminorversion and \pdfinclusionerrorlevel tests are re-done. The patch also saves some pdftex arrays that are needed to rediscover the object. This could eventually be extended to make sure \refxform et al work as well. As of now, that is untested due to lack of example. Comments and testing welcome, as always. ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-06-26 22:01 Message: Logged In: YES user_id=421 Sorry, pdf things work different then dvi, so we can not make \pdfximage etc. in ini mode without a lot of work; we will probably disable a bunch of primitives. ---------------------------------------------------------------------- Comment By: Robin Houston (robinhouston) Date: 2007-06-26 14:49 Message: Logged In: YES user_id=4579 Simplifying the example by eliminating the graphics package: ==> foo.ini <== \documentclass{minimal} \newbox\picbox \pdfximage{pic.pdf} \setbox\picbox\hbox{\pdfrefximage\pdflastximage} \dump ==> foo.tex <== \begin{document} \box\picbox \end{document} Also, I see now that my comparison with dvi-mode is indeed a false one, because the mechanisms are quite different, and the DVI graphics driver only has to include a \special, rather than the graphic itself. A simple solution, I suppose, would be to make \pdfrefximage (and, presumably, the other \pdfrefx commands) invalid in IniTeX mode. Perhaps this is too brutal, since it forbids certain harmless activities such as finding the dimensions of an image from an .ini file; and of course I would be delighted if it were made to work instead. ---------------------------------------------------------------------- Comment By: Reinhard Kotucha (reinhard) Date: 2007-06-26 00:26 Message: Logged In: YES user_id=4195 Martin, you probably can't do everything in a format file. However, it would be nice to be able to put graphics to a format file at least. Suppose that a web server has to generate PDF files on-the-fly, each contains a company logo. The best place place for the logo is the format file if speed matters. It would be nice if there are no restrictions. Regards, Reinhard ---------------------------------------------------------------------- Comment By: Robin Houston (robinhouston) Date: 2007-06-25 23:42 Message: Logged In: YES user_id=4579 I'm impressed by the speed of your response! Thanks. If you replace the PDF image by an EPS file, and use -output-format dvi, then it does work. That suggests to me that the problem is not fundamentally caused by a limitation of IniTeX. But I don't know enough about the inner workings of the \includegraphics command to be sure about that. (Perhaps PDF graphics are handled in a sufficiently different way for this to be a false comparison?) In any case, as you say, it shouldn't crash! ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-06-25 23:30 Message: Logged In: YES user_id=421 I can reproduce it, and it obviously shouldn't crash, but I'm really not shure if it's supposed to work, as the format of course will not save the picture. You can't do everything in IniTeX... ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=824&group_id=106

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[ pdftex-Bugs-747 ] \letterspacefont and \pdffontexpand, again
by noreply＠sarovar.org 28 Jun '07

28 Jun '07

Bugs item #747, was opened at 2007-03-09 03:09 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=747&group_id=106 Category: hz Group: v1.40.1 Status: Open Resolution: Accepted Priority: 5 Submitted By: Robert (schlcht) Assigned to: The Thanh Han (hanthethanh) Summary: \letterspacefont and \pdffontexpand, again Initial Comment: When expanding a letterspaced font, the base font will be expanded, too, resulting in the error `font has been expanded with different parameters' when the base font is expanded again: \letterspacefont\lsfont\font 100 \pdffontexpand\lsfont 20 20 5 autoexpand \pdffontexpand\font 20 20 5 autoexpand Z\bye ---------------------------------------------------------------------- >Comment By: Robert (schlcht) Date: 2007-06-28 14:01 Message: Logged In: YES user_id=2217 If we can get rid of the error message, I think it can be left at that. Mind you, the problem is not how to expand a letterspaced font but how to *not* expand the base font when expanding a letterspaced font. That expanding a letterspaced font results in expansion of the base font can be documented as a feature, IMO. Here are some more clues: The error message seems to be related to the sign of the stretch parameter. First of all, with \letterspacefont\lsfont\font 100 \pdffontexpand\lsfont 20 20 5 autoexpand the base font will be expanded, however it will never be shrunk. Then, \letterspacefont\lsfont\font 100 \pdffontexpand\lsfont 20 20 5 autoexpand \pdffontexpand\font 20 -20 5 autoexpand doesn't yield an error. Neither does: \pdffontexpand\lsfont 20 -20 5 autoexpand \pdffontexpand\font 20 -20 5 autoexpand However, here comes the error again: \pdffontexpand\lsfont 20 -20 5 autoexpand \pdffontexpand\font 20 20 5 autoexpand If you expand the base font first, it's OK in any case, also with different signs. ---------------------------------------------------------------------- Comment By: Taco Hoekwater (taco) Date: 2007-06-28 07:37 Message: Logged In: YES user_id=1608 That sounds nice, I like it. ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-06-28 06:45 Message: Logged In: YES user_id=710 I agree this is an ugly solution, which has its origin in a design mistake. However the problem here is not only how to deal with the error message, but the point is how to use font expansion with a letterspaced font. Please give it a thought so we can come up with an acceptable workaround. If we want everything to be clean, there are more things that have to be thrown away. what about this: have a primitive \copyfont which creates a copy of a font. Example: \letterspacefont\lsfont\font 100 \copyfont\lsxfont\lsfont \pdffontexpand\lsxfont 20 20 5 autoexpand ---------------------------------------------------------------------- Comment By: Taco Hoekwater (taco) Date: 2007-06-27 11:43 Message: Logged In: YES user_id=1608 If there is no clean way of solving the problem, I'd rather just document the error message as a feature. I find \pdfnewexpandfont very ugly (sorry Thanh). ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-06-24 10:46 Message: Logged In: YES user_id=710 here is a patch that introduces a new primitive \pdfnewexpandfont. Usage: \font\f=cmr10 \pdfnewexpandfont\fx \f 20 20 5 autoexpand Note that \pdfnewexpandfont generates \fx by loading a TFM corresponding to \f first, then applies font expansion in the same way like "\pdffontexpand\fx 20 20 5". So when \f is a font that doesn't have a corresponding TFM (for example, because it was generated in pdftex memory only), the above command won't work. In particular, the following doesn't work: \font\f=cmr10 \letterspacefont\lsfont\f 100 \pdfnewexpandfont\fx \lsfont 20 20 5 autoexpand since \lsfont doesn't have a corresponding TFM but was generated by \letterspacefont. To create a letterspaced+expanded font, one can use: \font\f=cmr10 \letterspacefont\fx\f 100 \pdffontexpand\fx 20 20 5 autoexpand things are gettting messy... sorry about that. Testing/comments welcome. ---------------------------------------------------------------------- Comment By: Robert (schlcht) Date: 2007-04-01 00:44 Message: Logged In: YES user_id=2217 Fine for me and microtype. ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-31 09:52 Message: Logged In: YES user_id=710 either name is ok with me. We need a new pritimive to load a new font and expand it, since the current one doesn't load a new font and hence is making trouble. I would wait for a while to see how Robert sees it before making any change. ---------------------------------------------------------------------- Comment By: Nobody (None) Date: 2007-03-19 11:07 Message: Logged In: NO Hello, I do not think that \pdfexpandfont is a good name for a new primitive, as it is too easy to confuse with \pdffontexpand. What about \pdfexpandnewfont, as -- if I understand correctly -- a new font is loaded? Jonathan P.S: Thank you for creating pdfTeX! ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-10 20:18 Message: Logged In: YES user_id=710 Phil Taylor has a suggestion that seems great to me: introduce a new primitive \pdfexpandfont instead. How do you see it? ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-03-10 19:24 Message: Logged In: YES user_id=421 Forget that comment. Of course a change of \pdffontexpand has to be considered carefully. By you. :-) ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-03-10 19:22 Message: Logged In: YES user_id=421 No. It's an undocumented primitive. ;-) ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-09 17:28 Message: Logged In: YES user_id=710 sigh. A mistake when implementing the \pdffontexpand primitive: it should load a new font for expansion, instead of expanding a loaded font. Too late for change now? ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=747&group_id=106

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[ pdftex-Bugs-824 ] Bus error caused by loading an image into a format file
by noreply＠sarovar.org 28 Jun '07

28 Jun '07

Bugs item #824, was opened at 2007-06-26 00:22 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=824&group_id=106 Category: Image inclusion Group: v1.40.3 Status: Open Resolution: Accepted Priority: 5 Submitted By: Robin Houston (robinhouston) Assigned to: Martin Schröder (oneiros) Summary: Bus error caused by loading an image into a format file Initial Comment: I have written a tool that speeds up repeated compilation of a source file, by generating a format from the preamble of the document, and then using it to compile the body. One user reported a crash when using this tool with a custom letterhead class; the class in question may be found at http://www.soe.ucsc.edu/~elm/LaTeX/ucletter.cls (though note that a simpler demonstration is attached to this report). The bug is triggered by the fact that this class loads an image during the processing of the preamble (i.e. during the processing of the .ini file) and saves it in a box. When this box is used, during the compilation of the body, pdftex crashes. This does work with ordinary (non-PDF) TeX, so the problem is specific to PDFTeX. The attachment contains a simple demonstration of the problem. Unpack it and run 'make'. ---------------------------------------------------------------------- >Comment By: Taco Hoekwater (taco) Date: 2007-06-28 12:57 Message: Logged In: YES user_id=1608 Here is a patch that fixes the problem by dumping and restoring the image _meta information_ to/from any generated format. The image _data_ is not included (that would be really hard to do in a portable way), and therefore the undumping routines have to redo most of the work of \pdfximage, but this is transparent to the user except that the tests for \pdfminorversion and \pdfinclusionerrorlevel tests are re-done. The patch also saves some pdftex arrays that are needed to rediscover the object. This could eventually be extended to make sure \refxform et al work as well. As of now, that is untested due to lack of example. Comments and testing welcome, as always. ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-06-26 23:01 Message: Logged In: YES user_id=421 Sorry, pdf things work different then dvi, so we can not make \pdfximage etc. in ini mode without a lot of work; we will probably disable a bunch of primitives. ---------------------------------------------------------------------- Comment By: Robin Houston (robinhouston) Date: 2007-06-26 15:49 Message: Logged In: YES user_id=4579 Simplifying the example by eliminating the graphics package: ==> foo.ini <== \documentclass{minimal} \newbox\picbox \pdfximage{pic.pdf} \setbox\picbox\hbox{\pdfrefximage\pdflastximage} \dump ==> foo.tex <== \begin{document} \box\picbox \end{document} Also, I see now that my comparison with dvi-mode is indeed a false one, because the mechanisms are quite different, and the DVI graphics driver only has to include a \special, rather than the graphic itself. A simple solution, I suppose, would be to make \pdfrefximage (and, presumably, the other \pdfrefx commands) invalid in IniTeX mode. Perhaps this is too brutal, since it forbids certain harmless activities such as finding the dimensions of an image from an .ini file; and of course I would be delighted if it were made to work instead. ---------------------------------------------------------------------- Comment By: Reinhard Kotucha (reinhard) Date: 2007-06-26 01:26 Message: Logged In: YES user_id=4195 Martin, you probably can't do everything in a format file. However, it would be nice to be able to put graphics to a format file at least. Suppose that a web server has to generate PDF files on-the-fly, each contains a company logo. The best place place for the logo is the format file if speed matters. It would be nice if there are no restrictions. Regards, Reinhard ---------------------------------------------------------------------- Comment By: Robin Houston (robinhouston) Date: 2007-06-26 00:42 Message: Logged In: YES user_id=4579 I'm impressed by the speed of your response! Thanks. If you replace the PDF image by an EPS file, and use -output-format dvi, then it does work. That suggests to me that the problem is not fundamentally caused by a limitation of IniTeX. But I don't know enough about the inner workings of the \includegraphics command to be sure about that. (Perhaps PDF graphics are handled in a sufficiently different way for this to be a false comparison?) In any case, as you say, it shouldn't crash! ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-06-26 00:30 Message: Logged In: YES user_id=421 I can reproduce it, and it obviously shouldn't crash, but I'm really not shure if it's supposed to work, as the format of course will not save the picture. You can't do everything in IniTeX... ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=824&group_id=106

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[ pdftex-Bugs-747 ] \letterspacefont and \pdffontexpand, again
by noreply＠sarovar.org 28 Jun '07

28 Jun '07

Bugs item #747, was opened at 2007-03-09 04:09 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=747&group_id=106 Category: hz Group: v1.40.1 Status: Open Resolution: Accepted Priority: 5 Submitted By: Robert (schlcht) Assigned to: The Thanh Han (hanthethanh) Summary: \letterspacefont and \pdffontexpand, again Initial Comment: When expanding a letterspaced font, the base font will be expanded, too, resulting in the error `font has been expanded with different parameters' when the base font is expanded again: \letterspacefont\lsfont\font 100 \pdffontexpand\lsfont 20 20 5 autoexpand \pdffontexpand\font 20 20 5 autoexpand Z\bye ---------------------------------------------------------------------- >Comment By: Taco Hoekwater (taco) Date: 2007-06-28 09:37 Message: Logged In: YES user_id=1608 That sounds nice, I like it. ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-06-28 08:45 Message: Logged In: YES user_id=710 I agree this is an ugly solution, which has its origin in a design mistake. However the problem here is not only how to deal with the error message, but the point is how to use font expansion with a letterspaced font. Please give it a thought so we can come up with an acceptable workaround. If we want everything to be clean, there are more things that have to be thrown away. what about this: have a primitive \copyfont which creates a copy of a font. Example: \letterspacefont\lsfont\font 100 \copyfont\lsxfont\lsfont \pdffontexpand\lsxfont 20 20 5 autoexpand ---------------------------------------------------------------------- Comment By: Taco Hoekwater (taco) Date: 2007-06-27 13:43 Message: Logged In: YES user_id=1608 If there is no clean way of solving the problem, I'd rather just document the error message as a feature. I find \pdfnewexpandfont very ugly (sorry Thanh). ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-06-24 12:46 Message: Logged In: YES user_id=710 here is a patch that introduces a new primitive \pdfnewexpandfont. Usage: \font\f=cmr10 \pdfnewexpandfont\fx \f 20 20 5 autoexpand Note that \pdfnewexpandfont generates \fx by loading a TFM corresponding to \f first, then applies font expansion in the same way like "\pdffontexpand\fx 20 20 5". So when \f is a font that doesn't have a corresponding TFM (for example, because it was generated in pdftex memory only), the above command won't work. In particular, the following doesn't work: \font\f=cmr10 \letterspacefont\lsfont\f 100 \pdfnewexpandfont\fx \lsfont 20 20 5 autoexpand since \lsfont doesn't have a corresponding TFM but was generated by \letterspacefont. To create a letterspaced+expanded font, one can use: \font\f=cmr10 \letterspacefont\fx\f 100 \pdffontexpand\fx 20 20 5 autoexpand things are gettting messy... sorry about that. Testing/comments welcome. ---------------------------------------------------------------------- Comment By: Robert (schlcht) Date: 2007-04-01 02:44 Message: Logged In: YES user_id=2217 Fine for me and microtype. ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-31 11:52 Message: Logged In: YES user_id=710 either name is ok with me. We need a new pritimive to load a new font and expand it, since the current one doesn't load a new font and hence is making trouble. I would wait for a while to see how Robert sees it before making any change. ---------------------------------------------------------------------- Comment By: Nobody (None) Date: 2007-03-19 12:07 Message: Logged In: NO Hello, I do not think that \pdfexpandfont is a good name for a new primitive, as it is too easy to confuse with \pdffontexpand. What about \pdfexpandnewfont, as -- if I understand correctly -- a new font is loaded? Jonathan P.S: Thank you for creating pdfTeX! ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-10 21:18 Message: Logged In: YES user_id=710 Phil Taylor has a suggestion that seems great to me: introduce a new primitive \pdfexpandfont instead. How do you see it? ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-03-10 20:24 Message: Logged In: YES user_id=421 Forget that comment. Of course a change of \pdffontexpand has to be considered carefully. By you. :-) ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-03-10 20:22 Message: Logged In: YES user_id=421 No. It's an undocumented primitive. ;-) ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-09 18:28 Message: Logged In: YES user_id=710 sigh. A mistake when implementing the \pdffontexpand primitive: it should load a new font for expansion, instead of expanding a loaded font. Too late for change now? ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=747&group_id=106

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[ pdftex-Bugs-747 ] \letterspacefont and \pdffontexpand, again
by noreply＠sarovar.org 28 Jun '07

28 Jun '07

Bugs item #747, was opened at 2007-03-09 03:09 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=747&group_id=106 Category: hz Group: v1.40.1 Status: Open Resolution: Accepted Priority: 5 Submitted By: Robert (schlcht) Assigned to: The Thanh Han (hanthethanh) Summary: \letterspacefont and \pdffontexpand, again Initial Comment: When expanding a letterspaced font, the base font will be expanded, too, resulting in the error `font has been expanded with different parameters' when the base font is expanded again: \letterspacefont\lsfont\font 100 \pdffontexpand\lsfont 20 20 5 autoexpand \pdffontexpand\font 20 20 5 autoexpand Z\bye ---------------------------------------------------------------------- >Comment By: The Thanh Han (hanthethanh) Date: 2007-06-28 06:45 Message: Logged In: YES user_id=710 I agree this is an ugly solution, which has its origin in a design mistake. However the problem here is not only how to deal with the error message, but the point is how to use font expansion with a letterspaced font. Please give it a thought so we can come up with an acceptable workaround. If we want everything to be clean, there are more things that have to be thrown away. what about this: have a primitive \copyfont which creates a copy of a font. Example: \letterspacefont\lsfont\font 100 \copyfont\lsxfont\lsfont \pdffontexpand\lsxfont 20 20 5 autoexpand ---------------------------------------------------------------------- Comment By: Taco Hoekwater (taco) Date: 2007-06-27 11:43 Message: Logged In: YES user_id=1608 If there is no clean way of solving the problem, I'd rather just document the error message as a feature. I find \pdfnewexpandfont very ugly (sorry Thanh). ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-06-24 10:46 Message: Logged In: YES user_id=710 here is a patch that introduces a new primitive \pdfnewexpandfont. Usage: \font\f=cmr10 \pdfnewexpandfont\fx \f 20 20 5 autoexpand Note that \pdfnewexpandfont generates \fx by loading a TFM corresponding to \f first, then applies font expansion in the same way like "\pdffontexpand\fx 20 20 5". So when \f is a font that doesn't have a corresponding TFM (for example, because it was generated in pdftex memory only), the above command won't work. In particular, the following doesn't work: \font\f=cmr10 \letterspacefont\lsfont\f 100 \pdfnewexpandfont\fx \lsfont 20 20 5 autoexpand since \lsfont doesn't have a corresponding TFM but was generated by \letterspacefont. To create a letterspaced+expanded font, one can use: \font\f=cmr10 \letterspacefont\fx\f 100 \pdffontexpand\fx 20 20 5 autoexpand things are gettting messy... sorry about that. Testing/comments welcome. ---------------------------------------------------------------------- Comment By: Robert (schlcht) Date: 2007-04-01 00:44 Message: Logged In: YES user_id=2217 Fine for me and microtype. ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-31 09:52 Message: Logged In: YES user_id=710 either name is ok with me. We need a new pritimive to load a new font and expand it, since the current one doesn't load a new font and hence is making trouble. I would wait for a while to see how Robert sees it before making any change. ---------------------------------------------------------------------- Comment By: Nobody (None) Date: 2007-03-19 11:07 Message: Logged In: NO Hello, I do not think that \pdfexpandfont is a good name for a new primitive, as it is too easy to confuse with \pdffontexpand. What about \pdfexpandnewfont, as -- if I understand correctly -- a new font is loaded? Jonathan P.S: Thank you for creating pdfTeX! ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-10 20:18 Message: Logged In: YES user_id=710 Phil Taylor has a suggestion that seems great to me: introduce a new primitive \pdfexpandfont instead. How do you see it? ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-03-10 19:24 Message: Logged In: YES user_id=421 Forget that comment. Of course a change of \pdffontexpand has to be considered carefully. By you. :-) ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-03-10 19:22 Message: Logged In: YES user_id=421 No. It's an undocumented primitive. ;-) ---------------------------------------------------------------------- Comment By: The Thanh Han (hanthethanh) Date: 2007-03-09 17:28 Message: Logged In: YES user_id=710 sigh. A mistake when implementing the \pdffontexpand primitive: it should load a new font for expansion, instead of expanding a loaded font. Too late for change now? ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=747&group_id=106

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Re: [NTG-pdftex] Image dimension in DVI mode (was: images in formats)
by Thanh Han The 27 Jun '07

27 Jun '07

On Wed, Jun 27, 2007 at 10:20:37PM +0200, Heiko Oberdiek wrote: > On Wed, Jun 27, 2007 at 08:15:09PM +0200, Thanh Han The wrote: > > > fwiw, pdftex has support for reading image dimension that > > can be used in dvi mode (added as requested by ChoF, who > > uses pdftex mainly in dvi mode and use dvipdfmx to create > > pdf). > > What do you mean with "reading image dimension in dvi mode"? > > pdfTeX 1.40.3: > ! pdfTeX error (\pdfximage): not allowed in DVI mode (\pdfoutput <= 0). > > Or are you referring to the package `bmpsize'? you got me: I said something I didn't test. actually I added \pdfximagebbox as Cho requested, but it seems that nobody has ever tested/used it, including me and Cho. Thanh

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Re: [NTG-pdftex] images in formats
by Thanh Han The 27 Jun '07

27 Jun '07

On Wed, Jun 27, 2007 at 07:13:36PM +0200, Hans Hagen wrote: > Thanh Han The wrote: > >dumping an image in pdf mode is rather difficult to get > >right. If in dvi mode an image is "stored" by a reference to > >an external file, then I am afraid the speed gain is not > >that much. There is for sure some comfort by having a dumped > >file reference in the format, but again that can be also > >achieved for pdf mode using some macros IMHO. > > to me it looks like a rather useless option to include an image in a > format, just as we don't embed type 1 fonts in the format either so > let's not waste energy on it > > >My vote is also to disable \pdfrefximage and the likes in > >init mode. > > depends a bit what 'the likes' is, i can imagine that one wants to > measure the dimensions of a graphic or so and store them, but indeed > the ref to an imag ecan be disabled I had that in mind too, that's way I voted to disable \pdfrefximage instead of \pdfximage. The likes here are \pdfrefobj, \pdfrefxform and perhaps those that can cause pdftex to write anything to the output. fwiw, pdftex has support for reading image dimension that can be used in dvi mode (added as requested by ChoF, who uses pdftex mainly in dvi mode and use dvipdfmx to create pdf). > also, those who generate a format should know what they're doing/dealing > with indeed Thanh

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[ pdftex-Bugs-824 ] Bus error caused by loading an image into a format file
by noreply＠sarovar.org 27 Jun '07

27 Jun '07

Bugs item #824, was opened at 2007-06-26 00:22 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=824&group_id=106 Category: Image inclusion Group: v1.40.3 Status: Open Resolution: Accepted Priority: 5 Submitted By: Robin Houston (robinhouston) Assigned to: Martin Schröder (oneiros) Summary: Bus error caused by loading an image into a format file Initial Comment: I have written a tool that speeds up repeated compilation of a source file, by generating a format from the preamble of the document, and then using it to compile the body. One user reported a crash when using this tool with a custom letterhead class; the class in question may be found at http://www.soe.ucsc.edu/~elm/LaTeX/ucletter.cls (though note that a simpler demonstration is attached to this report). The bug is triggered by the fact that this class loads an image during the processing of the preamble (i.e. during the processing of the .ini file) and saves it in a box. When this box is used, during the compilation of the body, pdftex crashes. This does work with ordinary (non-PDF) TeX, so the problem is specific to PDFTeX. The attachment contains a simple demonstration of the problem. Unpack it and run 'make'. ---------------------------------------------------------------------- >Comment By: Martin Schröder (oneiros) Date: 2007-06-26 23:01 Message: Logged In: YES user_id=421 Sorry, pdf things work different then dvi, so we can not make \pdfximage etc. in ini mode without a lot of work; we will probably disable a bunch of primitives. ---------------------------------------------------------------------- Comment By: Robin Houston (robinhouston) Date: 2007-06-26 15:49 Message: Logged In: YES user_id=4579 Simplifying the example by eliminating the graphics package: ==> foo.ini <== \documentclass{minimal} \newbox\picbox \pdfximage{pic.pdf} \setbox\picbox\hbox{\pdfrefximage\pdflastximage} \dump ==> foo.tex <== \begin{document} \box\picbox \end{document} Also, I see now that my comparison with dvi-mode is indeed a false one, because the mechanisms are quite different, and the DVI graphics driver only has to include a \special, rather than the graphic itself. A simple solution, I suppose, would be to make \pdfrefximage (and, presumably, the other \pdfrefx commands) invalid in IniTeX mode. Perhaps this is too brutal, since it forbids certain harmless activities such as finding the dimensions of an image from an .ini file; and of course I would be delighted if it were made to work instead. ---------------------------------------------------------------------- Comment By: Reinhard Kotucha (reinhard) Date: 2007-06-26 01:26 Message: Logged In: YES user_id=4195 Martin, you probably can't do everything in a format file. However, it would be nice to be able to put graphics to a format file at least. Suppose that a web server has to generate PDF files on-the-fly, each contains a company logo. The best place place for the logo is the format file if speed matters. It would be nice if there are no restrictions. Regards, Reinhard ---------------------------------------------------------------------- Comment By: Robin Houston (robinhouston) Date: 2007-06-26 00:42 Message: Logged In: YES user_id=4579 I'm impressed by the speed of your response! Thanks. If you replace the PDF image by an EPS file, and use -output-format dvi, then it does work. That suggests to me that the problem is not fundamentally caused by a limitation of IniTeX. But I don't know enough about the inner workings of the \includegraphics command to be sure about that. (Perhaps PDF graphics are handled in a sufficiently different way for this to be a false comparison?) In any case, as you say, it shouldn't crash! ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2007-06-26 00:30 Message: Logged In: YES user_id=421 I can reproduce it, and it obviously shouldn't crash, but I'm really not shure if it's supposed to work, as the format of course will not save the picture. You can't do everything in IniTeX... ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=824&group_id=106

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[ pdftex-Feature Requests-572 ] non-compression of pdfxform
by noreply＠sarovar.org 27 Jun '07

27 Jun '07

Feature Requests item #572, was opened at 2006-06-10 23:11 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=496&aid=572&group_id=106 Category: None >Group: v1.50 >Status: Closed >Resolution: Wont Fix Priority: 5 Submitted By: ivo welch (iaw4) Assigned to: Nobody (None) Summary: non-compression of pdfxform Initial Comment: would it be possible to add a feature to avoid compression of the user defined pdfxform stream? [goal: I want to define a string that I can then change via a shell/perl script in the .pdf file itself. I know I have to keep the same number of characters.] \newcount\XOBJA \setbox1=\hbox{12345678909876543210123456789} % this is a special string that one can later replace in the pdf file by hand \pdfxform 1 \XOBJA=\pdflastxform \begin{document} Here is my string on page \arabic{page}: \pdfrefxform \XOBJA \end{document} $ sed 's/12345678909876543210123456789/for user pdftex.../' < myfile.pdf I experimented with setting pdfcompresslevel and resetting it, but it is not reliable in when compression starts. in any case, I do not want the rest at low compression, just my own XOBJ xform. regards, /iaw ---------------------------------------------------------------------- >Comment By: Martin Schröder (oneiros) Date: 2007-06-27 14:55 Message: Logged In: YES user_id=421 It seems nobody needs this anymore; anyway one can achieve the same with pdftk. ---------------------------------------------------------------------- Comment By: Martin Schröder (oneiros) Date: 2006-07-25 00:02 Message: Logged In: YES user_id=421 Ivo, sorry for not reacting earlier. Adding this feature seems possible. Is it still needed? ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=496&aid=572&group_id=106

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