Hi Vyatcheslav,
Vyatcheslav Yatskovsky schrieb:
> Hello,
>
> Pleeease, I need a help.
>
> I might formulate my previous question badly, so let me restate it.
>
> How to handle optional arguments (one or two) with \definestartstop? More
> specifically, how to replace hard-coded "Logging-On" string so that I could
> write
> \startusecase[Logging-Out]
> Bla-bla
> \stopusecase
>
> or even
>
> \startusecase[Reminding password][User should be already logged on]
> % where the last argument is completely optional and is shown on an
> additional line
> % with "prerequisite" mark
> Bla-bla-bla
> \stopusecase
>
AFAIK startstop doesn't support optional|additional arguments. But maybe
I'm wrong or there is a better fitting macro somewhere in the deep of
'the base'. I simply dunno.
Anyhow, this is what I would do in such a case
\def\startFOO{\dodoubleempty\dostartFOO}
\long\def\dostartFOO[#1][#2]#3\stopFOO{%
\iffirstargument
[do something with #1]
\else
[do something without #1]
\fi
\ifsecondargument
[do something with #2]
\else
[do something without #2]
\fi
[whatever before]
#3
[whatever after]
}
\let\stopFOO\relax % or define the [whatever after] stuff here
This is the basic construct, the rest is parameter evaluation and some
additional whatever.
HTH, Peter
> My current startstop definition is
>
> \definestartstop[usecase][before={\starttextrule{Use Case:
> Logging-On}\startpacked\startmypar{\bf User Intentions}\mypar{\bf System
> Responsibilities}\stopmypar},
> after={\stoppacked\stoptextrule}]
>
> Best,
> Vyatcheslav
>
>
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