Marco Patzer schrieb am 05.12.2023 um 15:19:

Hi!

I'm struggling with the rendering of a particular liquid metal:

%% renders as m (meter), not as Hg \unit{mercury}

%% renders as mm·m, not as mmHg \unit{millimetermercury}

This is strange, since both “mercury” and “millimetermercury” are defined in phys-dim.lua. To get mercury recognised as a unit this can be used:

\registerunitshortcut [mercury=mercury]

Now \unit{mercury} renders correctly as Hg.

Why is that \registerunitshortcut necessary? Is it even correct to use it like this? However, even then millimetermercury doesn't render correctly:

%% renders as mm·Hg, not as mmHg \unit{millimetermercury}

How to get millimetermercury render as mmHg? And “inch mercury” render as inHg? I can't find “inchmercury” in phys-dim.lua, only “millimetermercury”, should it be added?

Example:

%% \enabletrackers [physics.units]

%% inch should render as “in” %% \setupunittext [inch=in]

\starttext \unit{mercury}\crlf %% renders: mm · m

\unit{12 millimetermercury}\crlf %% renders: mm · m \unit{12 inchmercury}\crlf %% renders: in · m

%% why is this necessary to get mercury rendered as Hg? \registerunitshortcut [mercury=mercury]

\unit{12 millimetermercury}\crlf %% renders: mm · Hg \unit{12 inch mercury}\crlf %% renders: in · Hg \stoptext

Questions:

1) Why is \unit{mercury} not working, although it's listed in phys-dim.lua? 2) Is the call \registerunitshortcut [mercury=mercury] necessary/correct? 3) How to make \unit{millimetermercury} render as mmHg and \unit{inch mercury} render as inHg?

None of your examples work because millimetermercury and mercury are the names for the labels and the units are accessed with hg and mmhg. \setupunittext[en][millimetermercury=inHg] \starttext \unit{mmhg} \stoptext Wolfgang