ntg-context December 2018

ntg-context@ntg.nl

32 participants
64 discussions

finding content of xml elements
by Hans van der Meer 12 Dec '18

12 Dec '18

Having a string pointing to an element in the XML-tree, for example IDENT::3 as the third element of the tree IDENT. How can access this element in a Lua function as function examine(element)…end called with value element = IDENT::3? Or formulated otherwise: how can I reach from that string into the XML-tree? dr. Hans van der Meer

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modifying kerning breaks opentype ligatures (and other features)
by mf 12 Dec '18

12 Dec '18

Hello list, i noticed that setting a different kerning breaks some features of opentype fonts; that is true, for example, for ligatures and fractions (frac feature). It looks like a modified kerning inserts something between two adjacent character, making them no more adjacent. That way the lookup of opentype tables fails. "f", "l" => "fl" ligature glyph "f", [kerning], "l" => distinct "f" and "l" glyphs "1", "/", "4" => "¼" glyph (with "frac" feature switched on) "1", [kerning], "/", [kerning], "4" => distinct "1", "/", "4" glyphs (always with "frac" feature switched on) MWE: \definecharacterkerning[narrow][factor=-.015] \definecharacterkerning[wide][factor=.015] \definefontfeature[frac][frac=yes] \starttext \feature[+][frac]% Some ligatures: float, finance, affine; a fraction: 1/4. \setcharacterkerning[narrow]Some ligatures: float, finance, affine; a fraction: 1/4. \setcharacterkerning[wide]Some ligatures: float, finance, affine; a fraction: 1/4. \stoptext In my XML to PDF workflow, fractions are marked up, so it's easy to switch the kerning off only for them. Instead i have no solution for ligatures: parts of text with a modified kerning loose ligatures, and i end up with the same words, once with ligatures, once without, even in the same page. Is there a workaround for this? Massimiliano

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repo.or.cz/context.git
by Henri Menke 12 Dec '18

12 Dec '18

Dear list, There is an online browsable repo with the ConTeXt sources at https://repo.or.cz/context.git It seems to be extremely outdated, the latest commit says beta 2014.02.14 17:07. I know that there is an up-to-date mirror at https://github.com/contextgarden/context-mirror but the Wiki links to the one at repo.or.cz. Could you either update the repo.or.cz mirror or adjust the Wiki to link to GitHub please? Cheers, Henri

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External Figure add caption or alternative text for tagged pdf/x
by Kelley, Claire 11 Dec '18

11 Dec '18

Hi All. I am trying to embed an image in a pdf so that when you open the pdf in acrobat or another reader the image is correctly tagged as an image and there is alternative text. So far I am able to export the back end tags so that I can see tags on tables and paragraphs, but the image comes through tagged as a paragraph and I am unable to add any alternative text. This is the code I am using: \setupbackend [format=PDF/X-1a:2001, export=yes] \externalfigure[district.pdf][height=10cm] Does anyone have any idea how I could fix this? Thanks! Claire

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issue with optical bounds (OpenType)
by Pablo Rodriguez 10 Dec '18

10 Dec '18

Dear list, I’m experiencing a weird issue with optical bounds in OpenType. Here you have the mandatory sample (font avaiable at https://gitlab.com/ousia/greek-lfbd/raw/master/TypographicaOStandard-Regula…): \startluacode fonts.handlers.otf.addfeature { name = "leftbounds", type = "single", data = { Ἀ = { -32, 0, -32, 0 }, Ἁ = { -32, 0, -32, 0 }, Ἂ = { -70, 0, -70, 0 }, Ἃ = { -70, 0, -70, 0 }, Ἄ = { -50, 0, -50, 0 }, Ἅ = { -50, 0, -50, 0 }, Ἇ = { -42, 0, -42, 0 }, Ἆ = { -42, 0, -42, 0 }, Ἠ = { -212, 0, -212, 0 }, Ἡ = { -212, 0, -212, 0 }, Ἢ = { -258, 0, -258, 0 }, Ἣ = { -258, 0, -258, 0 }, Ἥ = { -286, 0, -286, 0 }, Ἤ = { -286, 0, -286, 0 }, Ἦ = { -246, 0, -246, 0 }, Ἧ = { -246, 0, -246, 0 }, Ὧ = { -196, 0, -196, 0 }, } } \stopluacode \enabletrackers[fonts.protrusion] \definefontfeature[default][default] [script=greek, protrusion=quality, opbd=yes] \definefontfeature[leftbounds][leftbounds=yes] \showframe \setuplayout[page] \definefontfamily[mainface][rm][Typographica Old Standard] \definefontfamily[mainface][tt][Latin Modern Mono] \setupbodyfont[mainface, 300pt] \setupalign[hanging] \startbuffer \ifnum\pagenumber=1{\ttxx opbd}\else{\ttxx -opbd}\fi\page Ω\\ Ὧ\\ Α\\Ἀ\\Α\\Ἁ\\Α\\Ἂ\\Α\\Ἃ\\Α\\Ἄ\\Α\\Ἅ\\Α\\Ἆ\\Α\\Ἇ\\ Ἠ\\Η\\Ἡ\\Η\\Ἢ\\Η\\Ἣ\\Η\\Ἤ\\Η\\Ἥ\\Η\\Ἦ\\Η\\Ἧ\\Η \stopbuffer \starttext \getbuffer \setupalign[nothanging] \feature[+][leftbounds] \getbuffer \stoptext OpenType optical bounds are read from the font right: fonts > protrusions > left factor 1, right factor 1 fonts > protrusions > setting left using lfbd fonts > protrusions > lfbd -> 0.032 Ἀ (U+01F08) fonts > protrusions > lfbd -> 0.032 Ἁ (U+01F09) fonts > protrusions > lfbd -> 0.070 Ἂ (U+01F0A) fonts > protrusions > lfbd -> 0.070 Ἃ (U+01F0B) fonts > protrusions > lfbd -> 0.050 Ἄ (U+01F0C) fonts > protrusions > lfbd -> 0.050 Ἅ (U+01F0D) fonts > protrusions > lfbd -> 0.042 Ἆ (U+01F0E) fonts > protrusions > lfbd -> 0.042 Ἇ (U+01F0F) fonts > protrusions > lfbd -> 0.196 Ὧ (U+01F6F) fonts > protrusions > lfbd -> 0.246 Ἧ (U+01F2F) fonts > protrusions > lfbd -> 0.286 Ἦ (U+01F2E) fonts > protrusions > lfbd -> 0.246 Ἥ (U+01F2D) fonts > protrusions > lfbd -> 0.258 Ἤ (U+01F2C) fonts > protrusions > lfbd -> 0.286 Ἣ (U+01F2B) fonts > protrusions > lfbd -> 0.258 Ἢ (U+01F2A) fonts > protrusions > lfbd -> 0.212 Ἡ (U+01F29) fonts > protrusions > lfbd -> 0.212 Ἠ (U+01F28) I’m afraid that they aren’t applied accurately. The same values are used with the property "leftbounds" and they are perfect in that feature. Shouldn’t be the output from both methods be exactly the same? In all glyph pairs, both accented and unaccented glyphs should end in exactly the same point. I think this may be a bug, although I may be missing something. Many thanks for your help, Pablo -- http://www.ousia.tk

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Spurious missing character reports
by Rik Kabel 10 Dec '18

10 Dec '18

List, I have one document that after the 2018-11-18 update (beginning with 12-01 and continuing to the current 12-07) has generated hundreds of spurious missing character messages in the log. A short extract: fonts > start missing characters: C:/ConTeXt/tex/texmf/fonts/opentype/public/antt/AntykwaTorunskaCond-Regular.otf fonts > 72 U+00021 ! EXCLAMATION MARK fonts > 948 U+00022 " QUOTATION MARK fonts > 1302 U+00026 & AMPERSAND fonts > 345318 U+0002B + PLUS SIGN fonts > 216 U+00030 0 DIGIT ZERO fonts > 54270 U+00031 1 DIGIT ONE fonts > 28590 U+00036 6 DIGIT SIX fonts > 414 U+0003C < LESS-THAN SIGN fonts > 116712 U+00040 @ COMMERCIAL AT fonts > 1980 U+00042 B LATIN CAPITAL LETTER B fonts > 373878 U+00046 F LATIN CAPITAL LETTER F fonts > 48 U+00048 H LATIN CAPITAL LETTER H fonts > 3282 U+00049 I LATIN CAPITAL LETTER I fonts > 36 U+0004A J LATIN CAPITAL LETTER J fonts > 1560 U+0004B K LATIN CAPITAL LETTER K fonts > 12 U+0004C L LATIN CAPITAL LETTER L fonts > 3810 U+0004E N LATIN CAPITAL LETTER N fonts > 3402 U+00057 W LATIN CAPITAL LETTER W fonts > 48 U+0005A Z LATIN CAPITAL LETTER Z fonts > 64206 U+0005B [ LEFT SQUARE BRACKET fonts > 3420 U+00062 b LATIN SMALL LETTER B fonts > 3888 U+00063 c LATIN SMALL LETTER C fonts > 2880 U+00069 i LATIN SMALL LETTER I fonts > 1284 U+0006B k LATIN SMALL LETTER K fonts > 336 U+00070 p LATIN SMALL LETTER P fonts > 2118 U+0007B { LEFT CURLY BRACKET fonts > 258 U+0007C | VERTICAL LINE fonts > 12 U+0007E ~ TILDE fonts > stop missing characters There are similar reports for the other fonts used in the document (Antykwa Torunska is used for heads, EBGaramond with Libertinus fallback for the body). I have pared down the files to the following example which demonstrates the problem. I do not understand now all the features interact to cause this, but the reports disappear upon removing any (such as the seemingly-redundant \definebodyfontenvironment or the \switchtobodyfont[small]). \enabletrackers [fonts.missing] \definebodyfontenvironment [11pt] [a=1] \definefontfallback [fb:ebgr] [file:libertinusserif-regular] [0x204A] \starttypescript [serif] [ebgaramond] \definefontsynonym [Serif] [file:ebgaramond-regular] [fallbacks=fb:ebgr] \stoptypescript \define\Test{¡Missing!} \setupbodyfont [ebgaramond,11pt] \setupbodyfont [libertinus,11pt] \starttext \dorecurse{6}{ \switchtobodyfont[small] \Test\par} \stoptext While the messages appear to be incorrect, there is no apparent problem associated with them. I do not know if they point to some problem I have not recognized, or are truly spurious. (And I can eliminate them by turning off the tracker when I am sure that I have the needed coverage in the fallbacks.) Of course, if I am doing something wrong I would like to correct it. -- Rik

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Strange behaviour of TABLE with \currentTABLErow
by Tomas Hala 10 Dec '18

10 Dec '18

Hi all, at https://wiki.contextgarden.net/Command/currentTABLEcolumn I learnt about \currentTABLErow etc. for counting lines in natural tables. I have got the following two minimal non-working examples (on TeXlive 2018): \starttext\setupTABLE[split=yes] \bTABLE \bTABLEhead\bTR\bTH head \eTH\eTR\eTABLEhead \bTABLEbody \dorecurse{100}{\bTR\bTD \currentTABLErow xxx \eTD\eTR} \eTABLEbody \eTABLE \stoptext In this case, the head-line is alse counted which makes no sense and I do not know how to supress it. If I add \bTABLEnext (below), I receive very strange result -- both heads are at the beginning of the table and both counted. Moreover, the "next" head is not used on the following pages. \starttext\setupTABLE[split=yes] \bTABLE \bTABLEhead\bTR\bTH head \eTH\eTR\eTABLEhead \bTABLEnext\bTR\bTH next head \eTH\eTR\eTABLEnext \bTABLEbody \dorecurse{100}{\bTR\bTD \currentTABLErow xxx \eTD\eTR} \eTABLEbody \eTABLE \stoptext I tried \TC and \TD instead of \TH, also without success. What I am doing wrong? Thanks in advance for help. Best wishes, Tomáš

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Re: [NTG-context] disableXML
by Hans Hagen 09 Dec '18

09 Dec '18

On 12/9/2018 6:58 PM, Hans van der Meer wrote: > I already tried \starttexcode...\stoptexcode, but in vain. then you need to be more explicit in what you want Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

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disableXML
by Hans van der Meer 09 Dec '18

09 Dec '18

I remember there existed a macro \disableXML, which at this time is undefined. Or does my memory fails me here? dr. Hans van der Meer

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fontfamily not loaded anymore
by Pablo Rodriguez 09 Dec '18

09 Dec '18

Dear list, I have the following source: \definefontfamily[mainface][rm][GFS Bodoni] \definefontfamily[mainface][hw][GFS Artemisia] \definefontfamily[mainface][ss][GFS Neohellenic] \definefontfamily[mainface][tt][GFS Didot] %[tf=file:{GFSDidot-Regular.otf}] \setupbodyfont[mainface] \startbuffer α β γ δ ε ζ\\ {\em α β γ δ ε ζ}\\ {\bf α β γ δ ε ζ}\\ {\bf α β γ δ ε ζ}\\ \stopbuffer \starttext \startTEXpage[offset=1em] \getbuffer \tt\getbuffer \ss\getbuffer \hw\getbuffer \stopTEXpage \stoptext All typefaces are loaded fine, except GFS Didot. Unless I specify the file for tf, any GFS Didot font isn’t loaded. I’m experiencing this with the latest betas. The error I get from ConTeXt is: selectfont > The requested font 'GFS Didot' has no files for the 'tf' alternative, Latin Modern is used instead. "mtxrunjit --script --fonts --list --all" shows in the relevant lines: gfsartemisiabold gfsartemisia gfsartemisiabold GFSArtemisiaBold.otf gfsartemisiabolditalic gfsdidot gfsartemisiabolditalic GFSArtemisiaBoldIt.otf gfsartemisiaitalic gfsartemisia gfsartemisiaitalic GFSArtemisiaIt.otf gfsartemisianormal gfsartemisia gfsartemisiaregular GFSArtemisia.otf gfsartemisiaregular gfsartemisia gfsartemisiaregular GFSArtemisia.otf gfsbodonibold gfsbodoni gfsbodonibold GFSBodoniBold.otf gfsbodonibolditalic gfsbodoni gfsbodonibolditalic GFSBodoniBoldIt.otf gfsbodoniitalic gfsbodoni gfsbodoniitalic GFSBodoniIt.otf gfsbodoninormal gfsbodoni gfsbodoniregular GFSBodoni.otf gfsbodoniregular gfsbodoni gfsbodoniregular GFSBodoni.otf gfsdidotbold gfsdidot gfsdidotbold GFSDidotBold.otf gfsdidotbolditalic gfsdidot gfsdidotbolditalic GFSDidotBoldItalic.otf gfsdidotitalic gfsdidot gfsdidotitalic GFSDidotItalic.otf gfsdidotnormal gfsdidot gfsdidotregular GFSDidot-Regular.otf gfsdidotregular gfsdidot gfsdidotregular GFSDidot-Regular.otf gfsneohellenicbold gfsneohellenic gfsneohellenicbold GFSNeohellenicBold.otf gfsneohellenicbolditalic gfsneohellenic gfsneohellenicbolditalic GFSNeohellenic-BoldItalic.otf gfsneohellenicitalic gfsneohellenic gfsneohellenicitalic GFSNeohellenicIt.otf gfsneohellenicnormal gfsneohellenic gfsneohellenicregular GFSNeohellenic.otf gfsneohellenicregular gfsneohellenic gfsneohellenicregular GFSNeohellenic.otf Why is the specification of the file for the tf style with GFS Didot needed? Many thanks for your help, Pablo -- http://www.ousia.tk

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ntg-context December 2018