Last modified: 2014-02-08 16:46:22 UTC

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Bug 30403 - The diagonal line in the letter z does not appear if z is super/sub-script during png rendering
The diagonal line in the letter z does not appear if z is super/sub-script du...
Status: RESOLVED WORKSFORME
Product: MediaWiki extensions
Classification: Unclassified
Math (Other open bugs)
unspecified
All All
: Low normal with 1 vote (vote)
: ---
Assigned To: Nobody - You can work on this!
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2011-08-16 18:19 UTC by daniel
Modified: 2014-02-08 16:46 UTC (History)
6 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description daniel 2011-08-16 18:19:18 UTC
In some cases the diagonal line in the letter z does not appear when z is an exponent. For example: http://en.wikipedia.org/wiki/Gamma_function (second formula).
Comment 1 Bawolff (Brian Wolff) 2011-08-16 18:29:31 UTC
Test cases:
<math>\frac{3}{1} 2^z</math>

<math>\frac{3}{1} 2_z</math>

(the \frac is to prevent simple html rendering and force png rendering)


Note, I could not reproduce this on local install (but could on wikipedia) so probably some sort of config issue.
Comment 2 daniel 2011-08-16 19:19:48 UTC
Note that in some cases the line does appear:
<math> \!\, f(z) = e^z = e^{(x+iy)} = e^x e^{iy} = e^x \left( \cos{y} + i \sin{y} \right)</math>
Comment 3 Brion Vibber 2011-08-16 22:05:54 UTC
Seems to be the difference between rendering with dvipng and rendering with dvips + gs + convert.

Running a local 1.17wmf1 the fallback to dvips doesn't seem to work (while it does work on trunk w/ Math extension enabled -- and renders nice-looking small "z"s). Installing dvipng and rerendering, I get the same output we see on the live site, where the top and bottom of the "z" look kinda like little "~"s with no diagonal line.
Comment 4 physikerwelt 2014-02-08 16:46:22 UTC
seems to work now

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