Katex: Vertical Layout

[adammaj1]

I try to make equation in markdown file on the gitlab.

I f try to follow this guidelines.

Why this equation

$\Phi_M(c) \overset{def}{=} \Phi_c(c)$

is not rendered ? ( I mean: \overset{def}{=} )

TIA

Adam

[marcianx]

I ran

katex.renderToString('\\Phi_M(c) \\overset{def}{=} \\Phi_c(c)')

on the javascript console both on your site and on https://khan.github.io/KaTeX/. It failed on the former as you indicated and it succeeded on the latter.

Are you by any chance running an old version of KaTeX? Per https://github.com/Khan/KaTeX/releases, \overset was added in v0.8.0.

[adammaj1]

thx.
I have found that "Gitlab ships with KaTeX starting from v8.15 ".
Maye it is a gitlab not KaTex problem so I have also asked on the gitlab

[edemaine]

Agreed. gitlab seems to include this version of katex which clearly doesn't include \overset, while the latest versions do. Hopefully they can upgrade as indicated in the comments there.

[adammaj1]

Is KaTex using version number ? I have found only 4fb9445a9 or 2015. How do you check it?

[edemaine]

KaTeX uses version numbers, but it doesn't seem to have made its way into Gitlab's code (unfortunately). But from the year, it's clearly an old version.