Too much space after integral sign with unicode-math and lualatex

Question

(I had a feeling this was a duplicate, but couldn't find an older question about it. Forgive me if I'm just bad at searching.)

Consider the minimal example

\documentclass{article}
\usepackage{mathtools}
\usepackage{unicode-math}
\setmathfont{lmmath-regular.otf}
\begin{document}
\begin{equation*}
  \int f(x) \, \mathrm{d}x
\end{equation*}
\end{document}

When compiled with lualatex the space between the integral sign and f(x) is too large, larger than what I get if I compile with xelatex (or if I'm not using unicode-math).

With lualatex:

enter image description here

With xelatex:

enter image description here

Without unicode-math:

enter image description here

I'm using a recently updated TeXlive 2011, and the same thing happens with Asana-Math.otf or xits-math.otf as math font. Can this be corrected somehow?

score 11 · Accepted Answer · edited Oct 28 '15 at 16:46

11

Update 28-10-2015: This has been fixed in version 0.85 of LuaTeX, see http://tracker.luatex.org/view.php?id=488

Looks something wrong with italic correction of integrals in the absence of super or subscripts, adding an empty superscript \int^{} f(x) fixes the spacing. Odd enough, adding empty subscript \int_{} f(x) makes it even closer! I'd report this to luatex bug tracker.

edited Oct 28 '15 at 16:46

Torbjørn T.

206,688

answered Nov 30 '11 at 23:49

خالد حسني

22,859

1

After tracking down the bug tracker, it seems you've reported this already, about a year ago: http://tracker.luatex.org/view.php?id=488 – Torbjørn T. Dec 01 '11 at 00:05
Or, that issue doesn't say anything about unicode-math, so it is somewhat different. Should I make a new issue, or just add a comment to that one? – Torbjørn T. Dec 01 '11 at 07:53
I think it is the same issue, I totally forgot about it :) – خالد حسني Dec 01 '11 at 09:59
In TL2012, this issue has disappeared in ConTeXt, but still exists in unicode-math. Maybe unicode-math needs to be updated? Or the newest ConTeXt contains this hack you mentioned to get around the engine bug? – Siyuan Ren Jan 22 '13 at 14:27
@C.R.: most likely ConTeXt has a workaround for it. – خالد حسني Jan 22 '13 at 14:30
@KhaledHosny: Is it possible to implement a workaround in LaTeX? – Siyuan Ren Jan 22 '13 at 14:45
@C.R.: I don’t know what the work around is… – خالد حسني Jan 22 '13 at 14:52
1

I can confirm that this bug is still in TL2014. Is it going to be fixed anytime soon? – Gaussler May 29 '15 at 11:00
1

@KhaledHosny, it also happens in TL2015. Sorry to say it, but it makes unicode-math pretty much useless for serious production work. Has no workaround been found yet? – Gaussler Aug 17 '15 at 13:23
1

This, along with the incorrect positioning of sub-/superscripts for integral signs (https://tex.stackexchange.com/q/267062/51235, which is supposedly the same bug), really destroys any use unicode-math might have offered. Why is this issue being ignored? – Socob Sep 21 '15 at 01:05
@Socob, it seems the bug fix is here at last. :-) – Gaussler Nov 18 '15 at 17:38
@Gaussler Finally :-)
I just hope it actually fixes all the problems...
– Socob Nov 21 '15 at 01:33
Any ideas when this will make its way to TeX Live? – Gaussler Dec 02 '15 at 11:34
1

It is on TeX live now, and the spacing is fixed, but the subscripts look quite far from the integral sign. A new bug perhaps? – Gaussler Jun 23 '16 at 19:05

Too much space after integral sign with unicode-math and lualatex

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