Indic font in JupyterLab terminal not rendering correctly

[vivian-rook]

Description

curl --silent "https://en.wikipedia.org/w/index.php?title=Malayalam_Wikipedia&oldid=1195587528" 2>&1 | grep "മലയാളം"
in the terminal of JupyterLab
Assuming the browser you are using is rendering Indic font correctly "മലയാളം" will appear incorrectly in JupyterLab

Expected behavior

Font should render correctly

Context

Zero to jupyterhub Chart version: 3.2.1
JupyterLab version: 4.1.2

[vivian-rook]

A little more context can be found https://phabricator.wikimedia.org/T355998

[krassowski]

JupyterLab uses xterm.js as a terminal implementation, maybe there is something relevant in the xterm.js issues (https://github.com/xtermjs/xterm.js/issues)?

[vivian-rook]

xtermjs/xterm.js#4867
and perhaps xtermjs/xterm.js#4830
do seem relevant. Thank you.

[krassowski]

Thanks for the link! Once this is fixed on xterm side we can update our versions to pull the fix.