General ⇒ position of optional parameter in a LaTeX command.

[yoo]

Usually LaTeX macro takes parameters in the form: \somecommand[opt-param1][opt-param2]{param1}{param2}

But the \blindlistlist command in the blindtext package takes an optional parameter after an obligatory parameter: \blindlistlist[<level>]{<env>}[<x>]

What is the benefit of taking an optional parameter after an obligatory parameter? And how do I define such a command?

[sommerfee]

What is the benefit of taking an optional parameter after an obligatory parameter?

One could add optional parameters without getting incompatible to its previous syntax, e.g. extend its syntax from

\xxx[<o-arg 1>]{<m-arg>}

to

\xxx[<o-arg 1>]{<m-arg>}[<o-arg 2>]

And how do I define such a command?

LaTeX and their packages are Open Source, so just take a look at the code of \blindlistlist.

[josephwright]

You could use the LaTeX3 xparse package to do this easily:

Code: Select all

\DeclareDocumentCommand \blintext {o +m o}{%
  % Code
}