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defining font family for several options
by jbf 02 Sep '20

02 Sep '20

Perhaps someone can assist me with the following query. I have a situation where I need to use more than one sans serif fonts (especially within complicated chapter heads). I currently have the following: \definefontfamily [mainface] [rm] [alegreya] \definefontfamily [mainface] [ss] [dax][tf=file:dax-regular] \definefontfamily [mainface] [mm] [alegreya] \setupbodyfont[mainface] \setupbodyfont[11pt] But what if I need to have, in addition to the Dax sans serif typeface, an additional sans serif typeface such as ITCAvantGarde? How do I declare that? Do I just give it another name, e.g. \definefontfamily[chapter][itcavantgarde] etc? If I did that, how then do I refer to it? Obviously not just as {\ss my text} since that would call in the dax font. Julian

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Error with negative superscript
by Jan Willem Flamma 01 Sep '20

01 Sep '20

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new upload
by Hans Hagen 01 Sep '20

01 Sep '20

Hi, In order to keep the 'context is good for toy math' reputation up to date, in lmtx we can now have proper discretionaries in math and math in discretionaries. The kind of things no one asks for but they might be useful in educational settings. Here are some examples (): \starttext \showframe \enabletrackers[math.toysymbol] \definemathtoysymbol[Plus] [bin][+] \definemathtoysymbol[Minus][bin][-] \definemathtoysymbol[Equal][rel][=] $\dorecurse{199} { x_{#1} \ifodd#1\relax\Plus\else\Minus\fi } x_{200} \Equal n$ \blank \dorecurse{10} { test \discretionary {\darkred hel $\sqrt{y}$ lo} {\darkgreen good $\sqrt{z}$ bye} {\darkblue wel $\sqrt{x}$ come} test } \blank \dorecurse{10} {test me #1 $x + 2x \discretionary class 2 {$+ \, \cdots $} {$ \cdots \, +$} {$+ \, \cdots \, +$} nx$ test } \stoptext You might be able to guess from this code what is supposed to happen. I'll play a bit more with this later (assuming that it's somehow useful). We could predefine a bunch. As usual there might be issues but I'll sort them out when we run into them (it's a non critical feature with not much impact). Hans (who must not forget to document it somewhere) ----------------------------------------------------------------- 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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own answer to part of the question re typeface options
by jbf 01 Sep '20

01 Sep '20

I have come up with part answers to my two questions. The remaining unanswered question is in the final line. The question I can now answer, after some experimenting, is how to ensure that I can use small caps as part of the Alegreya family when I need to do so. This is how my definitions now look (the solutions are highlighted): \definefontfamily [mainface] [rm] [alegreya] *[sc=file:alegreyasc-bold]* \definefontfamily [mainface] [ss] [dax][tf=file:dax-regular] \definefontfamily [mainface] [mm] [alegreya] \setupbodyfont[mainface] This now enables me to do: {\sc text in small caps} and the rest of the paragraph as normal (alegreya-regular)... I also now know, using the same type of solution above, that I can use two different weights of Dax, as follows: \definefontfamily [mainface] [ss] [dax][tf=file:dax-regular,*bf=file:dax-medium*] which enables me to do as follows: {\ss\bf My subheading} and it will be in Dax-medium font. But I also want to be able to use a second sans serif font, namely ITCAvantGardePro-Md. Can I have two 'mainface' definitions for [ss]? Or how would I achieve this? Julian

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Verbatim typing and compound breakpoints
by Christoph Reller 01 Sep '20

01 Sep '20

Dear List, I am using ConTeXt LMTX 2020.08.28 13:58 with the following M(N)WE: \definetype[typeLUA][option=LUA] \setbreakpoints[compound] \starttext \typeLUA{function(argument)} \stoptext Sadly, it does not compile. The problem seems to be the simultaneous use of compound breakpoints and parenthesis. The error message is: callback error: ...est/tex/texmf-context/tex/context/base/mkiv/lang-ini.lua:509: bad argument #1 to 'prehyphenchar' (luatex.lang expected, got no value) stack traceback: [C]: in function 'lang.prehyphenchar' ...est/tex/texmf-context/tex/context/base/mkiv/lang-ini.lua:509: in field 'prehyphenchar' ...est/tex/texmf-context/tex/context/base/mkiv/typo-brk.lua:171: in local 'method' ...est/tex/texmf-context/tex/context/base/mkiv/typo-brk.lua:392: in upvalue 'typesetters_breakpoints_handler' [string "local tonut = nodes.tonut..."]:16: in function <[string "local tonut = nodes.tonut..."]:11> (...tail calls...) ...est/tex/texmf-context/tex/context/base/mkiv/node-pro.lua:88: in function <...est/tex/texmf-context/tex/context/base/mkiv/node-pro.lua:79> How can I prevent this? Is this a bug? Cheers, Christoph

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a little more specific on switching fonts
by jbf 01 Sep '20

01 Sep '20

Earlier my question was 'what if I want to add an extra sans serif typeface?' (you can see below that I already have one ss - dax, but I need to add ITCAvantGarde as well as part of mainface or in some other way??). *I would like to add to that question, since it is closely connected.* This time, realizing I needed to also use small caps, and because AlegreyaSC of various weights is available in my system, you can see how I thought I would need to add it into the definitions below - in the second line. Then in the body of the document where I needed small caps, I did as follows: {\sc The text I need in small caps} and the rest of the paragraph follows... But the result is that the entire document is now in small caps. Clearly I am doing something wrong. \definefontfamily [mainface] [rm] [alegreya] \definefontfamily [mainface] [sc] [alegreyasc][[tf=file:alegreyasc-regular]] \definefontfamily [mainface] [ss] [dax][tf=file:dax-regular] \definefontfamily [mainface] [mm] [alegreya] \setupbodyfont[mainface] Anyone able to help me with this please? Julian

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LuaMetaTex dereferences NULL pointer
by Marcel Fabian Krüger 31 Aug '20

31 Aug '20

Hi, with the latest LuaMetaTeX upload (running on Linux x64), \normalunexpanded tries to write to address 0 and therefore segfaults: \normalunexpanded{abc} \starttext \stoptext ConTeXt fails with mtx-context | fatal error: return code: 139 The most interesting message from valgrind is ==53200== Invalid write of size 4 ==53200== at 0x17113D: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x151625: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x151E40: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x15E1A2: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x154AA1: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x122347: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x4A0C151: (below main) (in /usr/lib/libc-2.32.so) ==53200== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==53200== ==53200== ==53200== Process terminating with default action of signal 11 (SIGSEGV): dumping core ==53200== Access not within mapped region at address 0x0 ==53200== at 0x17113D: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x151625: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x151E40: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x15E1A2: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x154AA1: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x122347: ??? (in /home/marcel/lmtx-install/tex/texmf-linux-64/bin/luametatex) ==53200== by 0x4A0C151: (below main) (in /usr/lib/libc-2.32.so) ==53200== If you believe this happened as a result of a stack ==53200== overflow in your program's main thread (unlikely but ==53200== possible), you can try to increase the size of the ==53200== main thread stack using the --main-stacksize= flag. ==53200== The main thread stack size used in this run was 8388608. Best regards, Marcel

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Mathematical symbol of non-inclusion
by Fabrice Couvreur 31 Aug '20

31 Aug '20

Hello, The result is not what you expected. How can I correct this problem? Thank you Fabrice \starttext \m{A \not\subset B} \stoptext

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setuplayout vs Indesign!
by jbf 27 Aug '20

27 Aug '20

Severe Covid-19 restrictions locally have left me out on a limb unable to be side-byside with people who can set me on track for a few things! Hence the bombardment of questions, for which I apologise. But almost there! The InDesign QC individual (who accepts my ConTeXt-produced pdfs) wants some tweaking to my layout, saying, in simple terms:/Odd/right pgs left margin should be 20mm and right margin 15mm; even/left pgs right margin 20mm and left margin 15mm/. I think the difficulty is that what InDesign calls margins might be termed a little differently in ConTeXt and I have no experience with InDesign. My initial setup was as follows for a paper size defined as [width=140mm,height=216mm] double-sided setup (in other words a standard 8.5"x5.5" book): \setuplayout [backspace=16mm, topspace=12mm, header=6mm, headerdistance=10mm, footerdistance=9mm, footer=8mm, width=fit, horoffset=12.7mm, location=middle, height=198mm, marking=on] There was no mention of 'margins' as such in that layout, and the result is close to what is wanted but not quite. Do I solve the problem by adding in: leftmargin=20mm, rightmargin=15mm, or is it some other item I need to adjust to ensure the 20mm/15mm dimensions requested? Julian

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catch % in gsub("%", "\\letterpercent")
by Pablo Rodriguez 27 Aug '20

27 Aug '20

Dear list, I have and \xmlraw command that gives some text with percent signs. ConTeXt parses them as comments (so no output). Using Lua gsub(), I need to replace something like: string.gsub([[\xmlraw{#1}{.}]], "%", "\\letterpercent") How do I need to invoke % to get the character found? Many thanks for your help, Pablo -- http://www.ousia.tk

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