what's the difference between \ast as lualatex/xelatex uses it and $\ast$ as pdflatex uses it?
From what I see looks like pdflatex just won't accept \ast at all and needs the math mode. I wonder if it does affect the rendering in either of these engines?
@Lacey Weird. \ast produces no output but no error in LuaTeX, but (as expected) complains about missing $ in XeTeX and pdfTeX. So it's only LuaTeX that behaves unexpectedly. Thoughts @DavidCarlisle @UlrikeFischer?
@AlanMunn luatex feature mathchardef tokens act as chardef makes more sense with unicode-math when the font encoding matches there is presumably a missing character message in the log
@JosephWright yes going the expected course of things it'll get less lively when it's down to the level of exactly what accessibility api calls should this C++ rendering class in the middle of a million lines of chrome call... The person writing the code has the upper hand in the end:-)
@JosephWright but it is good to discuss with actual chemists first
@MarcelKrüger Could you have a look at the latest L3 checkins and let me know if they address your use case? On \pdfescape(string|name), the plan is to move l3str-convert to stable, but there may be a few adjustments just yet ...
@JosephWright It looks great but there is still one thing I am missing: I object equaivalent to \driver_pdf_annotation_last:. Basically my use-case for anonymous objects would not be objects that are never referenced but objects which are only referenced once directly after their definition.
@MarcelKrüger I'm not sure if this is in the long run the right strategy. You perhaps will need the object number in other places too, e.g. to put it in a associated files dictionary or a structure object or a collection. The l3drivers variant looks quite good. Did you try to use l3str-convert to avoid \pdfescapestring/\pdfescapename?
@JosephWright but what should the third argument do? Imho it would more sensible if \driver_pdf_object_now:nn would store the created object number in a special name (e.g. g_driver_last_obj) that could then be used with \driver_pdf_object_ref:n.
@JosephWright btw: the first public harftex question and what happens? We find a bug in the newest engine version ;-).
@UlrikeFischer Don't think it can work with \driver_pdf_object_ref:n, as that still needs a name, unless of course we reserve one name. Probably \driver_pdf_object_last: or similar is easier
@JosephWright yes it wouldn't work with the constant integer used internally currently. Also it doesn't fit well with the \driver_pdf_annotation_last:, \driver_pdf_object_last: looks more consistent.
@JosephWright yes I think it is going quite well. I have been thinking about "validity checks" . E.g. /OCproperties has two required entries. I have a check for it in \@@_catalog_OCProperties_gpush: but I think this gets messy and incomplete. It would be better to outsource this and to go at the end (if wanted) over the props and seqs.
@UlrikeFischer I'll try again here first, I can compile xetex and luatex so harftex ought to be Ok but it was including a bleading edge icu I think and that failed to build on cygwin (existing reported issue on the upstream repo)
@UlrikeFischer I wasn't trying to pressure anyone :). It is not a big deal for me to load pgfsys, I can spare a few seconds of compile time. I just didn't know the right way to get around the problem. Thanks for the input.
@JosephWright hyperref uses this to write the numbers of fields to the aux file but only in pdftex/luatex driver, can this actually work in dvips/dvipdfmx?
@UlrikeFischer You don't get the 'raw' PDF object number in dvips and dvipdfmx, you get a reference that can be resolved by the driver. I guess it depends what hyperref is trying to do
@JosephWright it trying to get a list of the fields (and to sort them if requested) so that calculation order works. tex.stackexchange.com/a/76500/2388. I don't think that passing through the aux is really necessary if we find something working for dvips for the "end of the run" question (I haven't checked yet how the field stuff is done in the dvips driver).
@Lacey try this vvv it will give an error in pdftex or xetex, and no visible output in luatex, if you uncomment the package it works as intended in luatex and xetex
@DavidCarlisle no substring with unic exists in my .log file, let alone unicode or unicode-math. I have found mentions of the actual packages I use in the form ofPackage: <name> Info: ... though
I don't have mentions for all of these in my actual document, so I think this list includes the packages loaded by packages as well. seems to be a complete list
For some reasons I don't get the -- ligature to work in LuaLaTeX. My preamble is \documentclass[twocolumn,DIV=18,fontsize=10pt]{scrartcl}\usepackage{fontspec}\defaultfontfeatures{Ligatures=TeX}\setmainfont{Latin Modern Roman}\usepackage{xparse}\usepackage{tabularx}
What am I missing out?
Fixed, for some reasons, building a custom format from the preamble killed that ligature. Is that somehow known?
@Skillmon The reason I'm asking is that there are a lot of dissertation templates around, but they don't relate at all to existing CTAN classes. So I searched for my university, for which I maintain a class on CTAN, but there is nothing there.
@Skillmon So if someone puts together a (crappy) template, that will show up despite the fact that there's a well maintained class available. (I understand that Overleaf can't decide what's 'well maintained', but the larger point remains.)
@AlanMunn this might happen. You could however supply a basic template utilizing your class. Be aware that the Overleaf installation is currently a bit behind (an early TL2017), and we can't guarantee when a more recent installation will finally be available (should be this year, but no precise ETA).
@JosephWright didn't know that. Thanks.
@JosephWright so loading fontspec in the format would be ok, but the \setmainfont shouldn't be in the format?
@Skillmon Ok. That's what I figured. Thanks. I expect people to have differing ages of distributions so the class is quite robust AFAIK. btw the search function on Overleaf is pretty, shall we say, primitive...
@JosephWright I already have a number of tests. They still fail quite often when object numbers changes when I rearrange something but are useful anyway, I already spotted quite some bad errors with their help ;-).
@UlrikeFischer I guessed you did: I just meant that in general I've not written tests for \driver_... code as it's so tied to some higher-level concept
@UlrikeFischer Of course, there is no data for XeTeX ... :(
so I am tryin gto upgrade to tex 2019, tug.org/texlive/upgrade.htmlIf you installed symlinks in system directories (via the installer option or tlmgr path add), remove them now with tlmgr path remove.
how would I know? I installed it a year ago or something, I don't remember what options I picked
Possible Duplicate:
LuaJIT and LuaTeX
There is a JIT for Lua called LuaJIT that has many speed improvements over standard Lua(in some cases up to 60 times). I'm curious if this could be used for LuaLaTeX or does it use a built it compiler?
@FaheemMitha you can simply remove the #! in fmtutil.cnf (or copy the entry to a local fmtutil.cnf: #! luajitlatex luajittex language.dat,language.dat.lua lualatex.ini then you can build the format and it should work.
i found out that i dont have symlinks. now im just curious if i should put and call the upgrade.sh at texlive OR texlive/2019 can you answer this in the mean time?
@Lacey I didn't know what you meant by "put", I never upgrade in place I just download the tl2019 installer and run it (from anywhere) and it installs into /usr/local/texlive2019
@FaheemMitha but as (according to the specs that are available) almost all support for legacy tex things is gone, any format would need a major rewrite and possibly commit to just that and give up working on pdftex or xetex (as of course context has done)
@Lacey the above will give the missing character warning on every run (no table of contents) but if you uncomment \sbox0{$ $} then it works even on the first run, the problem is that \ast takes the * from the math fonts and these are not set up until the first math in the document so you need some math (even if it is hidden in the table of contents formatting) to set things up
@Lacey the sbox there just makes an empty math list in a box and discards it but that is enough
i should mention, \ast and $\ast$ produce different things for me. \ast produces the nice asterisk with the font im using, whereas the math version produces the... matshy version of it?
@Lacey in xetex or pdftex it isn't an issue as you have to start math before using \ast luatex relaxes that constraint but allows you to fall into a hole....
@Lacey \textasteriskcentered is also pre-defined to be U+2217 in the TU encoding used by luatex, so that will work out of the box if you load textcomp in pdftex and not in luatex
@Lacey the TS1 encoding is the "text companion" encoding a second, but matching font that matches the main font and has extra symbols (not all pdftex font setups include this, but it should fall back on the ec fonts so still give an * in all cases)
@Lacey it's not being developed, but is actively maintained (ie updated for any system changes that need updated libraries etc) but it's just a fact of life that you can not fit the entire unicode range into a 256-character font.
@Lacey Engine development isn't all that necessary for a lot of day-to-day work, though work on accessible/tagged PDFs will likely push toward LuaTeX (and relatives) soon
ok so there's this question, https://tex.stackexchange.com/questions/4931/what-have-been-the-most-important-changes-to-latex-in-the-last-five-years-2005/4932 and when I look at the answers, it is all the relevant engines, all the stuff that is used nowadays.
what would be the answer to this today?
between 2005 and 2010 we have xetex, luatex, latex3(?), bibtex, fonts
@Lacey well you are free to ask anything you want, I'm not too keen on that kind of question as the answers show there get a rather random scattering of information that's not terribly useful, but you never know....
on ltnews, I can't find the release announcements of luatex/xetex(or even updates until after 2010s), im probably missing something obvious, but they seem like big things that should be in the news?
@Lacey well that's the problem, ltnews is just the format (not any contributed packages or engine changes) and we struggle to keep that understandable and down to 1 or 2 pages per release so over 5 years of one or two releases per year that would be 15 or so pages just for the format which is way too much for an answer, so it woul dbe alot of work to cut that down to a couple of paragraphs...
@Lacey no it is latex news on changes that we have made to the latex base release, we don't control (or have write access to) luatex or pdftex or xetex or any of the contributed packages on ctan
@Lacey there is an ltnews for every latex2e release going back to the first one in 1994
@Lacey we test latex with all the engines (including the Japanese uptex) but I dobut any of us use it regularly
@Lacey lualatex and xelatex (separately) were originally contributed code on ctan that had to patch latex in various ways to work with the unicode engines, in 2015 we pulled them both in house so the base latex release built the lualatex and xelatex formats without needing contributed patches.
the things the community upvoted the most, biblatex, beamer, tikz, mathtools -- they are all missing from the news/changelogs. wouldn't most people agree these were the biggest changes for most users of tex? i mean, if I leanred about the news about tex from these lists, i would be missing the most important stuff.
I feel as though I have been hearing about the LaTeX3 project for a very long time.
Why is it taking so long for it to come into fruition? Are there major technical difficulties, or is it purely a lack of developers that is causing a bottleneck?
I was wondering, what is the difference between LaTeX, LaTeX2e and LaTeX3. Are the 2 higher versions available for use? I use LaTeX. How can I use the other 2 on Windows 7?
@Lacey the latex3 project have been maintaining latex since Leslie Lamport stopped (in about 1991) we produced latex2e which has been the standard version of latex since 1993, all that time there have been development versions of something that might be called latex3 one day but not in a form that you can use if you need to ask. The coding layer (expl3) is used and if you are using lualatex you almost certainly use it as fontspec is written in that layer
will there be a latex3 one day that people actually use like latex2e?
or maybe a question to ask would be, why not just release latex3? I mean, if it works... It will never be finished just like no software is ever really finished, no?
@Lacey perhaps perhaps not. The thing is, in 1993, latex2e was the absolute maximum that a tex format could be, if you lloaded article class and amsmath you had about 50 (five zero) commands left for a user to define or use as \label etc on a PC of the age, so the only way to contemplate new features was as a complete replacement. Now loading the format hardly makes any impression at all on the memory requirements, so you could have a new format or you could add code to the existing fomat,
so whether you ever need to make a new format that doesn't have the existing 2e code is not so clear.
@Lacey the part that works is expl3 and that is released (and used in many packages) but that is a programming layer that allows you to write packages,
@Lacey but dante (the german tex user group) is by far the biggest of the local tex groups, they host and maintain ctan (since the US, then the UK dropped out) and generally use tex quite a bit.
@Lacey no actually internet connectivity makes a single host feasible and in some ways simpler these days, but it's not exactly a coincidence that it's the dante maintained one that has survived all this time. there are of course dozens of mirrors but all the uploads and maintenance is in the ctan host
@Lacey you almost never need to change a latex document, we go to great lengths to ensure that. (switching to utf-8 was the biggest change and even then the vast majority of documents would not need to change)
Possible Duplicate:
LuaJIT and LuaTeX
There is a JIT for Lua called LuaJIT that has many speed improvements over standard Lua(in some cases up to 60 times). I'm curious if this could be used for LuaLaTeX or does it use a built it compiler?
How to draw such arrows in the table?
I feel as though I have been hearing about the LaTeX3 project for a very long time.
Why is it taking so long for it to come into fruition? Are there major technical difficulties, or is it purely a lack of developers that is causing a bottleneck?
I was wondering, what is the difference between LaTeX, LaTeX2e and LaTeX3. Are the 2 higher versions available for use? I use LaTeX. How can I use the other 2 on Windows 7?
