- ntg-context - NTG Mailing Lists

gzip.compress in ConTeXt mkiv
by Marcel Fabian Krüger 02 Mar '22

02 Mar '22

Hi, The following document \directlua{ local arch = gzip.compress"I will become much much smaller, once the overhead is compensated" local orig = gzip.decompress(arch) print(arch:len(), orig:len(), orig) } \starttext \stoptext used to work in ConTeXt mkiv and still works in ConTeXt lmtx, but for current mkiv versions it breaks with ...mtx/tex/texmf-context/tex/context/base/mkiv/util-zip.lua:610: attempt to call a nil value (upvalue 'tocardinal1') stack traceback: ...mtx/tex/texmf-context/tex/context/base/mkiv/util-zip.lua:610: in upvalue 'putcompressed' ...mtx/tex/texmf-context/tex/context/base/mkiv/util-zip.lua:662: in function 'gzip.compress' [ctxlua]:1: in main chunk Best regards, Marcel

2 1

PageNumber in MetaFun
by Marco Patzer 02 Mar '22

02 Mar '22

Hi! Has something changed regarding PageNumber? Take the following example: \starttext foo\page \startMPcode if PageNumber==1: fill unitsquare scaled 1cm; elseif PageNumber==2: fill fullcircle scaled 2cm; fi \stopMPcode \stoptext LMTX 2022.01.21 20:13 produces a rectangle on page 2, an older MkIV produces a circle on page 2. Is this expected behaviour? Marco

2 2

mathalignment not working (? again ?)
by śrīrāma 02 Mar '22

02 Mar '22

Hi, While setting some rather large set of equations in a document I could not achieve proper alignment of columns in mathalignment. Below is a demonstrative example: \starttext \placeformula \startformula \startmathalignment[n=7,align={right,left,right,left,right,left,right}] \NC x_1 \NC + \NC x_2 \NC + \NC 6x_3 \NC = \NC 170, \NR \NC 3x_1 \NC - \NC 110x_2 \NC - \NC x_3 \NC = \NC 4, \NR \NC 14x_1 \NC + \NC 13x_2 \NC + \NC 10x_3 \NC = \NC 25. \NR \stopmathalignment \stopformula \startformula \startmathalignment[align={left,right}] \NC \sin^2 x + \cos^2 x \NC = 1 \NR \NC e^{iπ} \NC = -1 \NR \stopmathalignment \stopformula \stoptext The first example is from the wiki and the second one is just something I wrote as an example. Compiling the above, I see that the equations are not aligned as requested. There was an earlier discussion on this here: https://www.mail-archive.com/ntg-context@ntg.nl/msg97115.html However, I have: mtx-context | current version: 2022.01.21 20:13 where I have verified that the fix therein is present (in math-ali.mkxl). Have I gone wrong somewhere ? Thanks, Sreeram

2 2

Re: [NTG-context] Problems with itemize with several columns
by Xavier B. 25 Feb '22

25 Feb '22

It seems that putting \column before itemize of 'c', forces 'c' together with this content. Repeating this step produces what I want: \startexercici[exercici:operacions-amb-fraccions-2]{multiplicació i divisió} Opereu: \startitemize[a, columns, three] \item \startformula 3 \cdot \frac{5}{3} \stopformula \item \startformula \frac{3}{4} \cdot \frac{2}{5} \stopformula \column \item \startformula \frac{1}{3} \cdot \frac{3}{4} \div \frac{1}{5} \stopformula \item \startformula 5 \div \frac{7}{10} \cdot 7 \div \frac{2}{5} \stopformula \column \item \startformula \frac{1}{2} \cdot \frac{1}{2} \stopformula \item \startformula \frac{3}{2} \div \frac{2}{3} \div \frac{5}{4} \stopformula \column \item \startformula \frac{2}{3} \colon \frac{2}{5} \stopformula \item \startformula \frac{3}{4} \colon \frac{1}{2} \cdot 6 \stopformula \item \startformula \frac{2}{3} \colon \frac{3}{4} \cdot \frac{1}{2} \stopformula \stopitemize \stopexercici @fv leung said I have to replace frac for dfrac, but it mess up the following content in my book. Thanks all, On Thu, 24 Feb 2022 23:04:43 +0000 Bruce Horrocks <ntg(a)scorecrow.com> ha escrit: > > > > On 24 Feb 2022, at 22:10, Xavier B. via ntg-context <ntg-context(a)ntg.nl> wrote: > > > > Even if I change > > \startexercici[exercici:operacions-amb-fraccions-2]{multiplicació i divisió} Opereu: > > \startitemize[a, columns, three] > > > > > > for > > > > \startexercici[exercici:operacions-amb-fraccions-2]{multiplicació i divisió} Opereu: > > \startitemize[a, columns] > > > > > > the 'c' jumps. > > > > Isn't ConTeXt capable of handle that? > > Please see the attached PDF. > > The green line shows how much space is needed to fully print item (b). Item (c) will need the same amount of space, shown by the red line. However, this would take you into the footer area (shown by the blue arrows), so item (c) is split: the item label fits into the space at the bottom of the column and so is printed there; the fraction doesn't fit and so is moved to the next column. > > The solution to your problem would be some way of forcing the item body to stay with the label. I don't know what that command is - hopefully someone here does know. > > — > Bruce Horrocks > Hampshire, UK

1 0

Re: [NTG-context] Problems with itemize with several columns
by Xavier B. 25 Feb '22

25 Feb '22

Thanks, Bruce, for clarifying this. But can we put 'c' character in the second column. So 'c' and its math content were together. The annoying thing is that the letter is in one column and its content in another. Thanks, On Thu, 24 Feb 2022 23:04:43 +0000 Bruce Horrocks <ntg(a)scorecrow.com> ha escrit: > > > > On 24 Feb 2022, at 22:10, Xavier B. via ntg-context <ntg-context(a)ntg.nl> wrote: > > > > Even if I change > > \startexercici[exercici:operacions-amb-fraccions-2]{multiplicació i divisió} Opereu: > > \startitemize[a, columns, three] > > > > > > for > > > > \startexercici[exercici:operacions-amb-fraccions-2]{multiplicació i divisió} Opereu: > > \startitemize[a, columns] > > > > > > the 'c' jumps. > > > > Isn't ConTeXt capable of handle that? > > Please see the attached PDF. > > The green line shows how much space is needed to fully print item (b). Item (c) will need the same amount of space, shown by the red line. However, this would take you into the footer area (shown by the blue arrows), so item (c) is split: the item label fits into the space at the bottom of the column and so is printed there; the fraction doesn't fit and so is moved to the next column. > > The solution to your problem would be some way of forcing the item body to stay with the label. I don't know what that command is - hopefully someone here does know. > > — > Bruce Horrocks > Hampshire, UK

1 0

Problems with itemize with several columns
by Xavier B. 25 Feb '22

25 Feb '22

Hi, I try to solve this, but I could not. Can you please help me. I make a math problem sheet. In "Exercici 1.2", I put a itemize with three columns, but the 'c' exercise jumps to second column. I want that a, b, c remains in the first column, d, e, f in the second and g, h, i in the third. I tried \column command but it's worse. I attached the source and generated pdf. My version of context is: context --version mtx-context | ConTeXt Process Management 1.04 mtx-context | mtx-context | main context file: /usr/share/texmf-dist/tex/context/base/mkiv/context.mkiv mtx-context | current version: 2021.03.05 19:11 mtx-context | main context file: /usr/share/texmf-dist/tex/context/base/mkxl/context.mkxl mtx-context | current version: 2021.03.05 19:11 Thanks in advance, Xavier PS: Please CCme

4 8

Scheduled server downtime today
by Mojca Miklavec 24 Feb '22

24 Feb '22

Hi, One of our servers is going to have some (hopefully short) scheduled downtime today around 15:00 UTC. Mojca

1 0

Cyrillic alternate form in Neacademia
by Stefan Nedeljkovic 23 Feb '22

23 Feb '22

Dear list, I'm using the typeface Neacademia Text, and I'm trying to configure it to the specifics of the Serbian language. I want to replace the usual form of the lowercase cyrillic letter BE with the traditional Serbian form. I opened the font file in Font Forge and looked up the glyph info. Here is what I tried and what failed: \startluacode fonts.handlers.otf.addfeature { name = "besub", type = "substitution", data = { ["uni0431"] = "uni0431.SRB.alt" } } \stopluacode \definefontfeature[default] [mode=node,kern=yes, liga=yes,dlig=yes, calt=yes,ss03=yes, case=yes,ccmp=yes, locl=yes,script=cyrl,language=srb, besub=yes] No luck using hex codes either: \startluacode fonts.handlers.otf.addfeature { name = "besub", type = "substitution", data = { [0x1ab] = 0x3f8 } } \stopluacode"uni0431" Interestingly the single substitutions from page 175 of the fonts manual seem to work just fine. Any help is appreciated. Sincerely, Stefan

2 2

Bibliography
by Willi Egger 22 Feb '22

22 Feb '22

Hi all, I have a rather old project which involves a bibbliography of about 60 entries. — Now I tried to use the publications environment after reading the manual. — I must say environment this is impressive! However I struggle with getting it working. 1. When using my dataset, which is encoded as a ‘bbl’ type file I get a list of publications but the entries are uncomplete. enclosed files: publist-test.tex, test-literaturliste.bbl, publist-test.pdf 2. When I use a buffer for testing, I do not get \cite reference nor a publication list: publist-buffer-test,tex Can someone advise? Kind regards Willi

1 0

Disable reuse of figures
by Aditya Mahajan 21 Feb '22

21 Feb '22

Hi, This is related to a bug report for the filter module: https://github.com/adityam/filter/issues/60 Normally, when the same figure is included twice, context only includes the figure once and refers to the included figure the second time. The option `object=no` to externalfigure is supposed to prevent that, but it doesn't work. For example, consider the following example the bug-report uses graphviz as the external program, but I have changed that to context to keep things self contained) \usemodule[filter] \defineexternalfilter [graphviz] [ filter=context --purge, output=\externalfilterbasefile.pdf, readcommand=\ReadPDF, ] \def\ReadPDF#1% {\externalfigure[#1][object=no]} \starttext Circle: \startgraphviz \startMPpage draw fullcircle scaled 1cm; \stopMPpage \stopgraphviz Square: \startgraphviz \startMPpage draw fullsquare scaled 1cm; \stopMPpage \stopgraphviz \stoptext Behind the scenes, the first \startgraphviz ... \stopgraphviz environment writes the content to an external file (\jobname-temp-graphviz.tmp), runs `context --purge \jobname-temp-graphviz.tmp`, which creates `\jobname-temp-graphviz.pdf`. The `\ReadPDF` macro then includees the file (with object=no). At the next \startgraphviz .. \stopgraphviz, the same process is repeated. The `\jobname-temp-graphviz.pdf` file is overwritten and the new file should have been included. But it is not. The output contains the first image twice. I thought that object=no should have prevented the reuse. In fact, if I compile the file with luatex, I get an error message: ! error: (pdf inclusion): file has changed '12-two-outputs-temp-graphviz.pdf' mtx-context | fatal error: return code: 256 Any idea why object=no is not working? Thanks, Aditya

2 2