On Tue, 5 Mar 2013, Idris Samawi Hamid ادريس   سماوي حامد wrote:

> Dear gang,
>
> Has the behavior of \definestyle changed? In my typescript I have e.g.
>
> \definestyle [semibold] [\sb] []

You are, perhaps, thinking of \definealternativestyle which has the syntax 
that you are using above.

> It worked for years but now I get
>
> =============
> ! Undefined control sequence.
>
> system          > tex > error on line 1 in file 
> C:/ConTeXt/tex/texmf-project/tex/generic/private/type-mpro.mkiv: Undefined 
> control sequence ...
>
> 1 >>  \definestyle [semibold]                                       [\sb] []
> 2     \definestyle [semibolditalic,italicsemibold]                  [\st] []
> 3
> 4     \definestyle [smallcapssemibold,      semiboldsmallcaps]      [\SB] []
> 5     \definestyle [smallcapsbold,          boldsmallcaps]          [\BF] []
> 6     \definestyle [smallcapsitalic,        italicsmallcaps]        [\IT] []
> 7     \definestyle [smallcapssemibolditalic,semibolditalicsmallcaps][\ST] []
> 8     \definestyle [smallcapsbolditalic,    bolditalicsmallcaps]    [\BI] []
> 9
> 10     \definestyle [light]                                          [\LI] []
> 11     \definestyle [lightitalic,italiclight]                        [\LT] []
>
> <argument> \sb
>
> \define_style ...yle \edef \currentstyleparent {#2
>                                                 }\expandafter \edef 
> \csnam...
> l.1 ...                                   [\sb] []
>
> ?
> I have to update my cv for a deadline today, so I need to get this typescript 
> working asap. Just in case I've attached the whole typescript (MinionPro 
> Opticals, so it's a nice example of a sophisticated typescript). But 
> maybe/hopefully it's just a small update in syntax that I'm missing.

The syntax of \definestyle is:

     \definestyle[important][style=bold, color=red]

which defines a command \important{...} that typesets the result in bold 
and there.

The result of \definestyle is lost when the document is exported to XML. 
For that case, you should use \definehighlight[...] which has the same 
syntax.

Aditya