On Sat, 20 Sep 2008, Chen Shen wrote:

Hi all,

I wonder if anyone could help with this problem with Units in mkiv. Thanks a lot.

regards, shenchen

On Wed, Sep 3, 2008 at 9:36 AM, Chen Shen wrote:

...

Hi all, "\Micro" in the "units" module failed, while "\Nano" and "\Milli" works fine. "$\mu$" works, so it doesn't look like a font problem. The following code works with pdftex/MarkII, but fails under Luatex 0.29beta/MarkIV.

\usemodule[units] \starttext Hello world! $1\Micro\Meter$ $1\Micro\Second$ \stoptext

Any hints? Thanks a lot!

I am just writing to say that I looked at your original message, but could not figure out what is going wrong. \Micro is expanded to μ, but then something goes wrong. Hans, Taco, can you see what is happening here? Aditya

On Sat, Sep 20, 2008 at 6:28 PM, Taco Hoekwater wrote:

And as an aside, it would be nicer to use U+00B5 (mu latin) in the units module instead of U+03BC (mu greek).

\def\Micro {\dimensionprefix{\iftextdimensions u\else\hbox{µ}\fi}}

The \hbox is needed because \fam11 is using ec encoding, I think. (and that is problematic in its own way, but let's not go there)

Yes. This change to (mu latin) worked. Thank you so much for the detailed explanations. I think it is preferable to use upright greek letters in units. The shape of (mu latin) in the latin modern font isn't the prettiest design, but is still better than mixing italic mu with other upright letters in units. Besides, I guess, (mu latin) instead of u can be used in text-mode units? regards, shenchen