Christoph Reller schrieb am 20.12.2020 um 16:15:
Hi,
The following MNWE uses \dodoubleemptywithset. In ConTeXt MKIV it
works as expected, In ConTeXt LMTX an error results.
There is a fix below but even then your example won't work because
\typeTEX isn't defined.
\starttext
\unexpanded\def\doMyDefs[#1][#2]{\getparameters[MD#1][#2]}
\def\MyDefs{\dodoubleemptywithset\doMyDefs}
\MyDefs[A,B][key=val,k=v]
\MyDefs[C]
\typeTEX{\MDAkey} is \MDAkey. \typeTEX{\MDBkey} is \MDBkey.
\typeTEX{\MDAk} is \MDAk. \typeTEX{\MDBk} is \MDBk.
\stoptext
Possibly, \dodoubleemptywithset is not used anymore in LMTX, in which
case it should be removed. Otherwise this could be a bug. Or maybe I
use it wrongly?
It's a bug, the wrong argument is passed as comma list.
\permanent\tolerant\protected\def\dodoubleemptywithset#1#*[#2]#*[#3]%
{\doifsomething{#2}%
{\def\syst_helpers_with_set_step##1{#1[##1][#3]}%
- \processcommalist[#1]\syst_helpers_with_set_step}}
+ \processcommalist[#2]\syst_helpers_with_set_step}}
\permanent\tolerant\protected\def\dotripleemptywithset#1#*[#2]#*[#3]#*[#4]%
{\doifsomething{#2}%
{\def\syst_helpers_with_set_step##1{#1[##1][#3][#4]}%
- \processcommalist[#1]\syst_helpers_with_set_step}}
+ \processcommalist[#2]\syst_helpers_with_set_step}}
Wolfgang
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