Hi Marcin,

On Sat, 14 Mar 2009, Marcin Borkowski wrote:

> Hi,
>
> how to do this: here in Poland we have some conventions as for
> typesetting math; for example, we don't use  \leq, but \leqslant;

The easy way is to type ⩽ (0x2A7D) instead of ≤ (0x2264) :). You can do
something like

\setuplabeltext [en] [lessthanequal={\leq}]
\setuplabeltext [pl] [lessthanequal={\leqslant}]

\def\le{\labeltext{lessthanequal}}

and then use \le, but I am not sure if this is a good thing to do.

> we don't write "tan" for tangent, but "tg";

Do you want \tan to produce tg? Again you can do

\setuplabeltext [en] [tangent={tan}]
\setuplabeltext [pl] [tangent={tg}]

\definemathcommand [tan]     [nolop] {\mfunction{\labeltext{tangent}}}

> we don't write "arcsin", but
> "arc\,sin"; etc.

Same as above.

> Would it be possible to have such typographic
> conventions (I could provide a more comprehensive list, of course)
> enabled by \mainlanguage[pl]?

It is relatively easy to do this. I am in favour of implementing the
trignometric functions, etc; but I do not think that changing the meanings of
mathematical symbols is a good thing. It is really hard to remember the names of
symbols as is, changing meaning according to language will make it extremely
difficult.

> A related problem is dashes; where the
> English use an em-dash without any spaces, the Polish use an en-dash
> with spaces of around 0.2em (the left one "unbreakable", i.e., with
> \penalty10000).

Don't know.

> Also, we put periods after section numbers, so no "1.2
> Section", but rather "1.2. Section".

\setuplabeltext [pl] [section={{},{.}}]

> What is the ConTeXt way to have
> such things for different languages?

\setuplabeltext

Aditya