LaTeX forum ⇒ General ⇒ Argument expansion within NewDocumentCommand

[pippipalma]

Hello,
I'm trying to call the macro \verbum (defined via \NewDocumentCommand) from the other macro \regVerbum, but it seems that the mandatory argument taken by the \Splitlist processor in \verbum command has not been expanded.

Here it is a minimal working example:

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex) Open in Overleaf

\documentclass{article}
\usepackage{xparse}
 
\newcommand{\addConjug}[1]{#1.\par}
\NewDocumentCommand{\verbum}{>{\SplitList{;}}m}
{\ProcessList{#1}{\addConjug}}
 
\newcommand{\addVoice}[1]{#1;}
\NewDocumentCommand{\regVerbum}{>{\SplitList{,}}m}
{The input: \ProcessList{#1}{\addVoice}\par
The output: \verbum{\ProcessList{#1}{\addVoice}}}
 
\begin{document}
\regVerbum{a,b,c,d,e,f,g}
 
The input: a;b;c;d;e;f;g;\par
The output: \verbum{a;b;c;d;e;f;g;}
\end{document}

Could you please suggest a way to obtain by \regVerbum{a,b,c,d,e,f,g} what I obtain by \verbum{a;b;c;d;e;f;g;}?

Thanks!

[cgnieder]

This works in at least for your example code:

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex) Open in Overleaf

\documentclass{article}
\usepackage{xparse}
 
\newcommand{\addConjug}[1]{#1.\par}
 
\NewDocumentCommand{\verbum}{>{\SplitList{;}}m}
   {\ProcessList{#1}{\addConjug}}
 
\newcommand{\addVoice}[1]{#1;}
 
\NewDocumentCommand{\regVerbum}{>{\SplitList{,}}m}
   {%
     The input: \ProcessList{#1}{\addVoice}\par
     % this only works because \addVoice is expandable; it might or might not
     % work in your real case
     \edef\regVerbumAux{\ProcessList{#1}{\addVoice}}%
     The output: \expandafter\verbum\expandafter{\regVerbumAux}%
   }
 
\begin{document}
 
\regVerbum{a,b,c,d,e,f,g}
 
The input: a;b;c;d;e;f;g;\par
The output: \verbum{a;b;c;d;e;f;g;}
 
\end{document}

Regards

[pippipalma]

Thank you, Clemens, for your help. Unfortunately, it seems that, in my actual document, the command \addDes (which is the analogue of \addVoice in the MWE) is not expandable:

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex) Open in Overleaf

\documentclass{article}
\usepackage[polutonikogreek,italian]{babel}
\usepackage[latin1]{inputenc}
\usepackage{hanging}
\usepackage{type1ec}
\usepackage{etoolbox}
\usepackage{xparse}
\usepackage{mfirstuc}
 
% counters declarations
\newcounter{formlist}
\newcounter{meaninglist}
\newcounter{verblist}
\newcounter{rvlist}
 
% general definitions
\newcommand{\gr}[1]{\begin{otherlanguage*}{greek}#1\end{otherlanguage*}}
\newcommand{\aum}[2]{#1\ifstrempty{#1}{\`e#2}{\`#2}}
 
% definitions for command \entry
\newcommand{\addForm}[1]{\stepcounter{formlist}\ifnumequal{\theformlist}{1}{\markboth{#1}{#1}}{, }#1}
\newcommand{\addMeaning}[1]{\stepcounter{meaninglist}\ifnumequal{\themeaninglist}{1}{}{. }\makefirstuc{#1}}
\NewDocumentCommand{\entry}{>{\SplitList{;}}m m >{\SplitList{;}}m m}%
{\setcounter{formlist}{0}\hangpara{2em}{1}\textbf{\ProcessList{#1}{\addForm}}\ifstrempty{#4}{}{ [#4]} \emph{#2}\ \setcounter{meaninglist}{0}\ProcessList{#3}{\addMeaning}\par}
 
% definitions for command \verbo
\newcommand{\iv}[1]{%
\ifnumequal{\theverblist}{1}{; \emph{txt1.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{2}{; \emph{txt2.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{3}{; \emph{txt3.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{4}{; \emph{txt4.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{5}{; \emph{txt5.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{6}{; \emph{txt6.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{7}{, #1}{}%
\ifnumequal{\theverblist}{8}{; \emph{txt7.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{9}{; \emph{txt8.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{10}{; \emph{txt9.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{11}{; \emph{txt10.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{12}{; \emph{txt11.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{13}{; \emph{txt12.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{14}{; \emph{txt13.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{15}{; \emph{txt14.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{16}{; \emph{txt15.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{17}{, #1}{}%
\ifnumequal{\theverblist}{18}{; \emph{txt16.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{19}{; \emph{txt17.\ \emph{#1}}}{}%
\ifnumequal{\theverblist}{20}{; \emph{txt18.\ \emph{#1}}}{}%
}
\newcommand{\addConjug}[1]{\stepcounter{verblist}\ifstrempty{#1}{}{\iv{#1}}}
\NewDocumentCommand{\verbo}{>{\SplitList{;}}m m m m m}%
{\setcounter{verblist}{0}%
\entry{#2}{\ifdefequal{#3}{1}{v.\ tr.}{v.\ intr.}\ProcessList{#1}{\addConjug}}{#4}{#5}}
 
% definitions for command \verboreg
\newcommand{\rva}{}
\newcommand{\rvb}{}
\newcommand{\rvt}{}
\newcommand{\rv}[1]{%
\ifnumequal{\thervlist}{1}{\aum{\rva}{\rvb}#1}{}%
\ifnumequal{\thervlist}{2}{xxx \rva\rvb#1}{}%
\ifnumequal{\thervlist}{3}{\aum{\rva}{\rvb}#1}{}%
\ifnumequal{\thervlist}{4}{yyy \rva\rvb#1}{}%
\ifnumequal{\thervlist}{5}{zzz \rva\rvb#1}{}%
\ifnumequal{\thervlist}{6}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{7}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{8}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{9}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{10}{\rva\rvb#1}{}%
%\ifdefequal{\rvt}{1}{%
\ifnumequal{\thervlist}{11}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{12}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{13}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{14}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{15}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{16}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{17}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{18}{\rva\rvb#1}{}%
\ifnumequal{\thervlist}{19}{\rva\rvb#1}{}%
%}{}%
\ifnumequal{\thervlist}{20}{\rva\rvb#1}{;}%
}
\newcommand{\addDes}[1]{\stepcounter{rvlist}\ifstrempty{#1}{}{\rv{#1}}}
\NewDocumentCommand{\verboreg}{m m m m m m >{\SplitList{;}}m}%
{\setcounter{rvlist}{0}%
\renewcommand{\rva}{#1}%
\renewcommand{\rvb}{#2}%
\renewcommand{\rvt}{#4}%
\edef\verboregAux{\ProcessList{#7}{\addDes}}%
\expandafter\verbo\expandafter{\verboregAux}{#1#2#3}{#4}{#5}{#6}}
 
% definition of end_user command \anno
\newcommand{\anno}[6]%
{\verboreg{#1}{#2}{#3}{#4}{#5}{#6}{bla1;bla2;bla3;blà4;bla5;bla6;bla7;bla8;bla9;bla10;bla11;bla12;bla13;bla14;blò15;bla16;bla17;bla18;blù19;bla20}}
 
 
\begin{document}
text
\anno{aaa}{bbb}{ccc}{1}{Some recent text.}{\gr{some ancient text}}
 
\end{document}

Would you have any idea on how to solve that problem?

Best,
Giuseppe

[cgnieder]

Indeed it isn't expandable: you have a \stepcounter in there which does an assignment (it assigns a value to a counter) and assignments never are expandable.