On 25-10-2012 14:12, luigi scarso wrote:
$\overrightarrow{ab}$
$\underrightarrow{ab}$
both give the same result ($\underrightarrow{ab}$)
a few under/over mixups in math-arr.mkiv: line 429 and 434
Question for Aditya:
We have this arrow module, but as luatex has better under / over fill
support, we could use:
% \unexpanded\def\underrightarrow#1{\mathop{\Uunderdelimiter
\defaultmathfamily 2192 {#1}}}
% \unexpanded\def\overrightarrow #1{\mathop{\Uoverdelimiter
\defaultmathfamily 2192 {#1}}}
which actually gives a different spacing. So the question is: how valid
is the arrow module?
btw, The old kludges wrt left/right arrow fills with text above as used
in chemical reactions is solved using virtual characters ... I discussed
this with Gyre Math Font Gurus and we agreed that it makes sense to have
such double arrow combination snippets in the fonts ... it was also
discussed that we should have a well defined private space in unicode
for additional characters)
Hans
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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
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