Last modified: 2013-10-23 15:45:13 UTC
Two users have recently reported intermittent faults with the same equations displaying sometimes and not others. http://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)/Archive_116#Random_yet_specific_TeX_errors http://en.wikipedia.org/wiki/Help_talk:Displaying_a_formula#.5Cmathrm.2C_.5Cmathsf_don.27t_always_show Viewing http://en.wikipedia.org/w/index.php?title=User:Salix_alba/sandbox&oldid=573752375 gives Failed to parse (unknown error). Yet if I edit the page and see a preview they all render fine.
This happened for some articles in de.wikipedia, too (some links to examples are on [[de:Hilfe_Diskussion:TeX#Probleme_beim_.C3.9Cbersetzen]]) It seems to depend on the server, e.g. https://de.wikipedia.org/w/index.php?title=Parabel_%28Mathematik%29&oldid=122465929#Affine_Selbstabbildungen_der_Parabel_y.3Dx.C2.B2 sometimes is broken (served by mw1035), and sometimes rendered without error (served by mw1184).
This still happens ([[de:Merkmalexploration#Exploration_mit_Hintergrundwissen]], served by mw1095), but seems to be a server issue rather than a bug in the Math extenstion.
Thanks for taking the time to report this! I can reproduce this by reloading https://de.wikipedia.org/w/index.php?title=Parabel_%28Mathematik%29&oldid=122465929#Affine_Selbstabbildungen_der_Parabel_y.3Dx.C2.B2 a few times. Note: "Fehler beim Parsen (Unbekannter Fehler)" means "Error while parsing (Unknown error)" So I get "Man nennt solch eine Abbildung Schrägspiegelung, da eine Gerade, nämlich Fehler beim Parsen (Unbekannter Fehler): x=\tfrac{b}{2}" instead of "Man nennt solch eine Abbildung Schrägspiegelung, da eine Gerade, nämlich x = \tfrac{b}{2}" about 50% of the time and for so many different servers (mw1105, mw1169, mw1209, mw1211, mw1218) when testing ~10 times that it might not be specific servers to blame.
Assigning to Reedy to see if he can determine if it is actually server specific.
I would be interested in the result. Since I'm currently working on the second version of the Math extension. Thereby I have cleaned up the texvc code.
It's literally a case of the "per version" executable not being created. With the distractions of things breaking I forgot to run the command which compiles this on each server for each version As an aside, this is something that needs fixing up and there's a bug for this
How can I search for all open bugs for the math extension. It would be nice to showcase, which of them are fixed by Math2.0 and which are not fixed.
Off topic, but https://bugzilla.wikimedia.org/buglist.cgi?list_id=236907&query_based_on=Open%20Math&query_format=advanced&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=PATCH_TO_REVIEW&bug_status=REOPENED&component=Math&product=MediaWiki%20extensions&known_name=Open%20Math
*** Bug 54456 has been marked as a duplicate of this bug. ***
Reports of this still happening. Re-opening. [13:39] <b_jonas> argh! I'm trying to edit some <math> formulas on en.wikipedia, and get "Failed to parse (unknown error)" or not in all eight similar formulas depending on how I change the first formula
Hitting https://en.wikipedia.org/w/api.php?action=parse&text={{User:B_jonas/Sandbox}}&servedby&prop=text with the api repetitively The following servers seem to have issues: mw1135 mw1145 mw1203 mw1136 mw1189 mw1116 mw1193 mw1192 The following seem fine: mw1195 mw1198 mw1122 (I eventually got bored of doing this, so this isn't a full sample) The fact this this changes per render, suggests that the issue is with the php part of the extension, as in the case of a cached math formula, the php code probably shouldn't even be running texvc (I assume).
reedy@mw1192:/usr/local/apache/uncommon/1.22wmf8/bin$ ls -al total 720 drwxr-xr-x 2 mwdeploy mwdeploy 4096 Jul 11 15:18 . drwxr-xr-x 3 mwdeploy mwdeploy 4096 Jun 20 17:36 .. -rwxr-xr-x 1 mwdeploy mwdeploy 725237 Jul 11 15:18 texvc reedy@mw1192:/usr/local/apache/uncommon/1.22wmf19/bin$ ls -al total 720 drwxr-xr-x 2 mwdeploy mwdeploy 4096 Sep 27 16:55 . drwxr-xr-x 3 mwdeploy mwdeploy 4096 Sep 27 16:55 .. -rwxr-xr-x 1 mwdeploy mwdeploy 725237 Sep 27 16:55 texvc It seems there's probably 2 different issues here. Initially any and all math rendering would've been broken/not worked. As of my comment 6, this side of it should be fine (as shown by the existence of a texvc binary in the relevant folder)
Marking as a dupe, same issues appear with the unknown math related errors *** This bug has been marked as a duplicate of bug 55709 ***
