Henning Hraban Ramm schrieb am 28.10.2024 um 16:26:
Am 28.10.24 um 16:18 schrieb Wolfgang Schuster:
Henning Hraban Ramm schrieb am 28.10.2024 um 12:18:
Hi, I’m trying to use a command line argument in parameter names –
color name in the example below, variable namespace in my actual
project.
I guess I need more expansion, but where?
Or what’s the problem here?
"""
\setupbodyfont[plex,18pt]
% set \OEM to the parameter name, fall back to "fiee"
\expanded\define\OEM{\expanded\doifelsedocumentargument{OEM}
{\expanded\getdocumentargument{OEM}}{fiee}}
\doifelsedocumentargument{OEM}
{\def\OEM{\getdocumentargument{OEM}}}
{\def\OEM{fiee}}
or
\def\OEM
{\ifempty{\getdocumentargument{OEM}}%
fiee%
\else
\getdocumentargument{OEM}%
\fi}
Thank you, both works (of course, if you say so…).
Also in my actual project.
Can you explain why
\define\OEM{\doifelsedocumentargument{OEM}{\getdocumentargument{OEM}}{fiee}}
doesn’t?
1. \define creates an unexpandable command which can't be used as name
placeholder for \color.
%%%% begin example
\starttext
\protected\def\GELB{yellow} % \defineexpandable\GELB{...}
\def\BLAU{blue} % \define\BLAU{...}
\color[\GELB]{yellow}
\color[\BLAU]{blue}
\stoptext
%%%% end example
2. The \doifelsedocumentargument command is not expandable as well which
makes it impossible to use it to pick the correct color name within the
argument of \color.
Wolfgang
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