Hi,
\checkparameters seems broken in the current beta. The following example used to work at least with version 2012.06.13

---------------------------------------------------------------------------------
\def\myCom[#1]{%
        \checkparameters[#1]
        \ifparameters
                \getparameters[do][one=1,two=2,#1]
                \doone\ \dotwo
        \else
                #1
        \fi
}
\starttext
\myCom[one]

\myCom[one=one,two=two]
\stoptext
---------------------------------------------------------------------------------


… while with the current beta (2012.08.02) it results in:

system > tex > error on line 11 in file testcheckparameters.tex: Undefined control sequence ...

 1     \def\myCom[#1]{%
 2      \checkparameters[#1]
 3      \ifparameters
 4              \getparameters[do][one=1,two=2,#1]
 5              \doone\ \dotwo
 6      \else
 7              #1
 8      \fi
 9     }
10     \starttext
11 >>  \myCom[one]
12
13     \myCom[one=one,two=two]
14     \stoptext


\checkparameters ..._helpers_get_empty_parameters
                                                  #1=@@\_e_o_s_
\myCom [#1]->\checkparameters [#1]
\ifparameters \getparameters [do][one=1,t...
l.11 \myCom[one]


Thanks in advance,
Daniel
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