From: Frédéric WANG <fred.wang@free.fr>

Date: Thu, 12 Jun 2014 21:54:22 +0200

Message-ID: <539A056E.8000104@free.fr>

To: www-math@w3.org

Date: Thu, 12 Jun 2014 21:54:22 +0200

Message-ID: <539A056E.8000104@free.fr>

To: www-math@w3.org

Le 11/06/2014 18:37, Neil Soiffer a écrit : > I concur with David Carlisle: the spec specifically says it is false > (matches TeX behavior). It is similar to mfrac in that the rules for > mfrac say "The |mfrac| element sets |displaystyle| to "false". The > only difference with mtable is that there is an attribute that allows > you to override the default. So if we agree about that, my concern is that for things like {\displaystyle {\begin{aligned}\Gamma (z)&=\int _{0}^{x}e^{{-t}}t^{{z-1}}\,{\frac {{\mathrm {d}}t}{t}}+\int _{x}^{\infty }e^{{-t}}t^{{z+1}}\,{\frac {{\mathrm {d}}t}{t}}\\&=x^{z}e^{{-x}}\sum _{{n=0}}^{\infty }{\frac {x^{n}}{z(z+1)\cdots (z+n)}}+\int _{x}^{\infty }e^{{-t}}t^{{z}}\,{\frac {{\mathrm {d}}t}{t}}.\end{aligned}} the aligned environment is transformed into a <mtable> by LaTeX-to-MathML converters (such as MathJax or itex2MML) and so the content of the cells are not in displaystyle, contrary to how LaTeX behaves. That's a bit a pain that aligning with the spec in Gecko 29 broke compatibility with these converters... It seems that LaTeXML knows about the displaystyle context and is able to propagate <mstyle displaystyle="true"> element inside the <mtable> cells. However, for parsers like itex2MML, where the content of the cells is parsed first and directly converted into a string, it might be a bit tedious to insert such elements. Instead, itex2MML just inserts the a <mstyle displaystyle="true"> around the <mtable> and expects that the property will be propagated to cells. So in my opinion, it would be best if the displaystyle was "inherited" on <mtable>. It's easier to attach a displaystyle="false" to reset the property for normal TeX table than to append many new <mstyle> for <mtable> generated from LaTeX environments similar to \begin{aligned}. -- Frédéric Wang maths-informatique-jeux.com/blog/fredericReceived on Thursday, 12 June 2014 19:54:52 UTC

*
This archive was generated by hypermail 2.4.0
: Thursday, 24 March 2022 21:46:50 UTC
*