I am attempting to construct a new environment which will allow me to format arbitrary list types (itemize, enumerate, description etc.) with the new environment. As such I am passing it as a parameter to the new environment but it complains when I attempt the following:

#Environment definition here

I get the following error:

! Illegal parameter number in definition of \endmylist. 1 l.15 {\end{#1}}

How can I pass my parameters into the end block?


One possibility is to use the xparse package:

  % other code
  • 7
    Thank you, very useful package. As a side note for everyone who, like me, doesn't know xparse the {m} parameter is specified just like table columns. The m stands for "mandatory parameter". – Riccardo T. Oct 29 '11 at 14:00

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