From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/86924 Path: news.gmane.org!not-for-mail From: Hans Hagen Newsgroups: gmane.comp.tex.context Subject: Re: [luatex-plain] disappearing math-on node Date: Sun, 06 Apr 2014 00:44:41 +0200 Message-ID: <53408759.9060302@wxs.nl> References: <533DD914.2040009@wxs.nl> <20140405131233.GA16830@acheron> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="windows-1252"; Format="flowed" Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1396737916 20777 80.91.229.3 (5 Apr 2014 22:45:16 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 5 Apr 2014 22:45:16 +0000 (UTC) To: mailing list for ConTeXt users Original-X-From: ntg-context-bounces@ntg.nl Sun Apr 06 00:45:09 2014 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from balder.ntg.nl ([5.39.185.229]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WWZKl-0005tZ-3G for gctc-ntg-context-518@m.gmane.org; Sun, 06 Apr 2014 00:45:07 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 96E8F10238 for ; Sun, 6 Apr 2014 00:45:06 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id RDjKLlEL98Co for ; Sun, 6 Apr 2014 00:45:06 +0200 (CEST) Original-Received: from balder.ntg.nl (localhost [IPv6:::1]) by balder.ntg.nl (Postfix) with ESMTP id EAA6B101F5 for ; Sun, 6 Apr 2014 00:45:01 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id EA167101E7 for ; Sun, 6 Apr 2014 00:44:56 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id AkrBKpyonV4L for ; Sun, 6 Apr 2014 00:44:55 +0200 (CEST) Original-Received: from filter3-til.mf.surf.net (filter3-til.mf.surf.net [194.171.167.219]) by balder.ntg.nl (Postfix) with ESMTP id DE7CA101E1 for ; Sun, 6 Apr 2014 00:44:45 +0200 (CEST) Original-Received: from smtp.ziggozakelijk.nl (D57D1DA2.static.ziggozakelijk.nl [213.125.29.162]) by filter3-til.mf.surf.net (8.14.3/8.14.3/Debian-9.4) with ESMTP id s35MihVR013567 for ; Sun, 6 Apr 2014 00:44:44 +0200 X-Default-Received-SPF: pass (skip=loggedin (res=PASS)) x-ip-name=10.100.1.104; Original-Received: from [10.100.1.104] (unverified [10.100.1.104]) by pragma-net.nl (SurgeMail 6.3c2) with ESMTP id 10315-1713362 for ; Sun, 06 Apr 2014 00:44:43 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 In-Reply-To: <20140405131233.GA16830@acheron> X-Authenticated-User: hagen@controller-9 X-Bayes-Prob: 0.0001 (Score 0, tokens from: ntg-context@ntg.nl, base:default, @@RPTN) X-CanIt-Geo: ip=213.125.29.162; country=NL; region=Provincie Overijssel; city=Zwolle; latitude=52.5058; longitude=6.0858; http://maps.google.com/maps?q=52.5058,6.0858&z=6 X-CanItPRO-Stream: uu:ntg-context@ntg.nl (inherits from uu:default, base:default) X-Canit-Stats-ID: 06LKmIIQp - 8f7d7e734c6e - 20140406 (trained as not-spam) X-Scanned-By: CanIt (www . roaringpenguin . com) on 194.171.167.219 X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.14 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: ntg-context-bounces@ntg.nl Original-Sender: ntg-context-bounces@ntg.nl Xref: news.gmane.org gmane.comp.tex.context:86924 Archived-At: On 4/5/2014 3:12 PM, Philipp Gesang wrote: > =B7=B7=B7=B7=B7=B7=B7=B7=B7 > >> On 4/3/2014 6:29 PM, Dohyun Kim wrote: >>> This is a bug report based on the issue discussed at >>> https://github.com/lualatex/luaotfload/issues/212 >>> >>> \font\tenrm{file:lmroman10-regular.otf:mode=3Dnode;script=3Dlatn}\tenrm >>> \setbox0\vbox{% >>> x\penalty-10000 >>> $a$x$a$ >>> } >>> \unvbox0 >>> \setbox0\lastbox >>> \unhbox0 >>> \end >>> >>> The plain tex code shown above fails with a lua error: >>> luatex-fonts-merged.lua:9616: attempt to index local 'current' (a nil v= alue) >>> >>> My guess is: as math-on (math-off too) is a "discardable" item after a >>> linebreak, the first math-on node has gone away. So the >>> math-on/math-off pair has become broken, by which the behavior of >>> "node.end_of_math" is confused. >> >> mtxrun --script plain test.tex >> >> runs ok here so i need an example that fails with context or luatex-plain > > It fails with the luatex-plain format from the minimals as of > yesterday and Luatex 4972: > > error: .../context/tex/texmf-context/tex/context/base/font-ota.lua:1= 44: attempt to index local 'current' (a nil value) > . > \bye ^^@-\par > \vfill \supereject \end > l.17 \bye > > Though the issue arises only in node mode. > >> normally the font callback is called on a hlist and there are always >> paired math nodes >> >> (what is line 9616 in the current beta?) > > Line 9626 with yesterday=92s code. Attached are patches for > font-ota.lua and luatex-fonts-otn.lua that guard all invocations > of end_of_math() with checks for the subtype. I think that the removed math node is a bad thing so that will change in = a next luatex release (i tested a patch but it will not go in the tl = release). (Just like the math node at the end of a line it will have = zero surround in order to make the backend happy.) In order to avoid the 'current' issue I'll use an overload of = end_of_math in the generic code. The real solution is to make the built-in end_of_math more strict = (trivial patch ready and tested so that can end up in the next luatex). In the context code i won't intercept it because end_of_math will do = that at some point. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________= ________ If your question is of interest to others as well, please add an entry to t= he Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-cont= ext webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________= ________