How to define a macro with multiple optional parameters?












3















After I had a macro that worked, I tried to improve it by making some parameters optional.
Unfortunately the macro no longer works. Instead I'm getting errors I do not understand, for example:



LaTeX Warning: Label `####5' multiply defined.
LaTeX Warning: Label `####5' multiply defined.
! LaTeX Error: fLab undefined.
! Illegal parameter number in definition of fLab.
! Illegal parameter number in definition of reserved@a.
! LaTeX Error: fCap undefined.


...and so on.
The last code I tried looked like this:



%% Graphics figure with caption and label
% [1:placement,] 2:relative width, 3:file name[, 4:caption[, 5:label]]
newcommand{figCapLab}[5][htbp]{%
ifthenelse{equal{#5}{}}%
{renewcommand{fLab}{}}%
{renewcommand{fLab}{label{##5}}}%
ifthenelse{equal{#4}{}}%
{renewcommand{fCap}{fLab}}%
{renewcommand{fCap}{caption{fLab{small{}##4}}}}%
begin{figure}[#1]%
centering%
begin{minipage}[t]{#2textwidth}%
includegraphics[width=textwidth]{#3}% is width of surrounding minipage
fCap%
end{minipage}%
end{figure}
}
%% Graphics figure with caption
% [1:placement,] 2:relative width, 3:file name, 4:caption
newcommand{figCap}[4]{%
ifthenelse{equal{#1}{}}%
{figCapLab{#2}{#3}{#4}{}}%
{figCapLab[#1]{#2}{#3}{#4}{}}%
}
%% Graphics figure with label
% [1:placement,] 2:relative width, 3:file name, 4:label
newcommand{figLab}[4]{%
ifthenelse{equal{#1}{}}%
{figCapLab{#2}{#3}{}{#4}}%
{figCapLab[#1]{#2}{#3}{}{#4}}%
}


Who can explain what went wrong?



People who like complete examples should add this prolog:



documentclass[a4paper,twoside]{report}
usepackage{german}
usepackage[latin1]{inputenc}
usepackage{a4}
usepackage{amsmath}
usepackage{url}
usepackage{graphicx}
usepackage{ifthen}


...and this epilog:



begin{document}
See ref{foo}.
figCapLab{0.9}{whatever.pdf}{Caption}{foo}
end{document}









share|improve this question









New contributor




U. Windl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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  • 3





    Instead of identifying mistakes in your code without much context, can you provide information on what you want to achieve ultimately? Perhaps there are better ways of achieving it.

    – Werner
    3 hours ago











  • please extend your code fragment to complete but small document!

    – Zarko
    3 hours ago











  • @Werner: There are always different ways to reach a goal, but if you change the way too frequently, you'll never make it. So I'd prefer a fix for my "solution" over a completely new attempt (like xparse).

    – U. Windl
    2 hours ago











  • pgfkeys allow you to have multiple keys, which you could call optional arguments.

    – marmot
    2 hours ago
















3















After I had a macro that worked, I tried to improve it by making some parameters optional.
Unfortunately the macro no longer works. Instead I'm getting errors I do not understand, for example:



LaTeX Warning: Label `####5' multiply defined.
LaTeX Warning: Label `####5' multiply defined.
! LaTeX Error: fLab undefined.
! Illegal parameter number in definition of fLab.
! Illegal parameter number in definition of reserved@a.
! LaTeX Error: fCap undefined.


...and so on.
The last code I tried looked like this:



%% Graphics figure with caption and label
% [1:placement,] 2:relative width, 3:file name[, 4:caption[, 5:label]]
newcommand{figCapLab}[5][htbp]{%
ifthenelse{equal{#5}{}}%
{renewcommand{fLab}{}}%
{renewcommand{fLab}{label{##5}}}%
ifthenelse{equal{#4}{}}%
{renewcommand{fCap}{fLab}}%
{renewcommand{fCap}{caption{fLab{small{}##4}}}}%
begin{figure}[#1]%
centering%
begin{minipage}[t]{#2textwidth}%
includegraphics[width=textwidth]{#3}% is width of surrounding minipage
fCap%
end{minipage}%
end{figure}
}
%% Graphics figure with caption
% [1:placement,] 2:relative width, 3:file name, 4:caption
newcommand{figCap}[4]{%
ifthenelse{equal{#1}{}}%
{figCapLab{#2}{#3}{#4}{}}%
{figCapLab[#1]{#2}{#3}{#4}{}}%
}
%% Graphics figure with label
% [1:placement,] 2:relative width, 3:file name, 4:label
newcommand{figLab}[4]{%
ifthenelse{equal{#1}{}}%
{figCapLab{#2}{#3}{}{#4}}%
{figCapLab[#1]{#2}{#3}{}{#4}}%
}


Who can explain what went wrong?



People who like complete examples should add this prolog:



documentclass[a4paper,twoside]{report}
usepackage{german}
usepackage[latin1]{inputenc}
usepackage{a4}
usepackage{amsmath}
usepackage{url}
usepackage{graphicx}
usepackage{ifthen}


...and this epilog:



begin{document}
See ref{foo}.
figCapLab{0.9}{whatever.pdf}{Caption}{foo}
end{document}









share|improve this question









New contributor




U. Windl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 3





    Instead of identifying mistakes in your code without much context, can you provide information on what you want to achieve ultimately? Perhaps there are better ways of achieving it.

    – Werner
    3 hours ago











  • please extend your code fragment to complete but small document!

    – Zarko
    3 hours ago











  • @Werner: There are always different ways to reach a goal, but if you change the way too frequently, you'll never make it. So I'd prefer a fix for my "solution" over a completely new attempt (like xparse).

    – U. Windl
    2 hours ago











  • pgfkeys allow you to have multiple keys, which you could call optional arguments.

    – marmot
    2 hours ago














3












3








3








After I had a macro that worked, I tried to improve it by making some parameters optional.
Unfortunately the macro no longer works. Instead I'm getting errors I do not understand, for example:



LaTeX Warning: Label `####5' multiply defined.
LaTeX Warning: Label `####5' multiply defined.
! LaTeX Error: fLab undefined.
! Illegal parameter number in definition of fLab.
! Illegal parameter number in definition of reserved@a.
! LaTeX Error: fCap undefined.


...and so on.
The last code I tried looked like this:



%% Graphics figure with caption and label
% [1:placement,] 2:relative width, 3:file name[, 4:caption[, 5:label]]
newcommand{figCapLab}[5][htbp]{%
ifthenelse{equal{#5}{}}%
{renewcommand{fLab}{}}%
{renewcommand{fLab}{label{##5}}}%
ifthenelse{equal{#4}{}}%
{renewcommand{fCap}{fLab}}%
{renewcommand{fCap}{caption{fLab{small{}##4}}}}%
begin{figure}[#1]%
centering%
begin{minipage}[t]{#2textwidth}%
includegraphics[width=textwidth]{#3}% is width of surrounding minipage
fCap%
end{minipage}%
end{figure}
}
%% Graphics figure with caption
% [1:placement,] 2:relative width, 3:file name, 4:caption
newcommand{figCap}[4]{%
ifthenelse{equal{#1}{}}%
{figCapLab{#2}{#3}{#4}{}}%
{figCapLab[#1]{#2}{#3}{#4}{}}%
}
%% Graphics figure with label
% [1:placement,] 2:relative width, 3:file name, 4:label
newcommand{figLab}[4]{%
ifthenelse{equal{#1}{}}%
{figCapLab{#2}{#3}{}{#4}}%
{figCapLab[#1]{#2}{#3}{}{#4}}%
}


Who can explain what went wrong?



People who like complete examples should add this prolog:



documentclass[a4paper,twoside]{report}
usepackage{german}
usepackage[latin1]{inputenc}
usepackage{a4}
usepackage{amsmath}
usepackage{url}
usepackage{graphicx}
usepackage{ifthen}


...and this epilog:



begin{document}
See ref{foo}.
figCapLab{0.9}{whatever.pdf}{Caption}{foo}
end{document}









share|improve this question









New contributor




U. Windl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












After I had a macro that worked, I tried to improve it by making some parameters optional.
Unfortunately the macro no longer works. Instead I'm getting errors I do not understand, for example:



LaTeX Warning: Label `####5' multiply defined.
LaTeX Warning: Label `####5' multiply defined.
! LaTeX Error: fLab undefined.
! Illegal parameter number in definition of fLab.
! Illegal parameter number in definition of reserved@a.
! LaTeX Error: fCap undefined.


...and so on.
The last code I tried looked like this:



%% Graphics figure with caption and label
% [1:placement,] 2:relative width, 3:file name[, 4:caption[, 5:label]]
newcommand{figCapLab}[5][htbp]{%
ifthenelse{equal{#5}{}}%
{renewcommand{fLab}{}}%
{renewcommand{fLab}{label{##5}}}%
ifthenelse{equal{#4}{}}%
{renewcommand{fCap}{fLab}}%
{renewcommand{fCap}{caption{fLab{small{}##4}}}}%
begin{figure}[#1]%
centering%
begin{minipage}[t]{#2textwidth}%
includegraphics[width=textwidth]{#3}% is width of surrounding minipage
fCap%
end{minipage}%
end{figure}
}
%% Graphics figure with caption
% [1:placement,] 2:relative width, 3:file name, 4:caption
newcommand{figCap}[4]{%
ifthenelse{equal{#1}{}}%
{figCapLab{#2}{#3}{#4}{}}%
{figCapLab[#1]{#2}{#3}{#4}{}}%
}
%% Graphics figure with label
% [1:placement,] 2:relative width, 3:file name, 4:label
newcommand{figLab}[4]{%
ifthenelse{equal{#1}{}}%
{figCapLab{#2}{#3}{}{#4}}%
{figCapLab[#1]{#2}{#3}{}{#4}}%
}


Who can explain what went wrong?



People who like complete examples should add this prolog:



documentclass[a4paper,twoside]{report}
usepackage{german}
usepackage[latin1]{inputenc}
usepackage{a4}
usepackage{amsmath}
usepackage{url}
usepackage{graphicx}
usepackage{ifthen}


...and this epilog:



begin{document}
See ref{foo}.
figCapLab{0.9}{whatever.pdf}{Caption}{foo}
end{document}






macros parameters






share|improve this question









New contributor




U. Windl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




U. Windl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 2 hours ago







U. Windl













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Check out our Code of Conduct.









asked 3 hours ago









U. WindlU. Windl

1183




1183




New contributor




U. Windl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





U. Windl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






U. Windl is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.








  • 3





    Instead of identifying mistakes in your code without much context, can you provide information on what you want to achieve ultimately? Perhaps there are better ways of achieving it.

    – Werner
    3 hours ago











  • please extend your code fragment to complete but small document!

    – Zarko
    3 hours ago











  • @Werner: There are always different ways to reach a goal, but if you change the way too frequently, you'll never make it. So I'd prefer a fix for my "solution" over a completely new attempt (like xparse).

    – U. Windl
    2 hours ago











  • pgfkeys allow you to have multiple keys, which you could call optional arguments.

    – marmot
    2 hours ago














  • 3





    Instead of identifying mistakes in your code without much context, can you provide information on what you want to achieve ultimately? Perhaps there are better ways of achieving it.

    – Werner
    3 hours ago











  • please extend your code fragment to complete but small document!

    – Zarko
    3 hours ago











  • @Werner: There are always different ways to reach a goal, but if you change the way too frequently, you'll never make it. So I'd prefer a fix for my "solution" over a completely new attempt (like xparse).

    – U. Windl
    2 hours ago











  • pgfkeys allow you to have multiple keys, which you could call optional arguments.

    – marmot
    2 hours ago








3




3





Instead of identifying mistakes in your code without much context, can you provide information on what you want to achieve ultimately? Perhaps there are better ways of achieving it.

– Werner
3 hours ago





Instead of identifying mistakes in your code without much context, can you provide information on what you want to achieve ultimately? Perhaps there are better ways of achieving it.

– Werner
3 hours ago













please extend your code fragment to complete but small document!

– Zarko
3 hours ago





please extend your code fragment to complete but small document!

– Zarko
3 hours ago













@Werner: There are always different ways to reach a goal, but if you change the way too frequently, you'll never make it. So I'd prefer a fix for my "solution" over a completely new attempt (like xparse).

– U. Windl
2 hours ago





@Werner: There are always different ways to reach a goal, but if you change the way too frequently, you'll never make it. So I'd prefer a fix for my "solution" over a completely new attempt (like xparse).

– U. Windl
2 hours ago













pgfkeys allow you to have multiple keys, which you could call optional arguments.

– marmot
2 hours ago





pgfkeys allow you to have multiple keys, which you could call optional arguments.

– marmot
2 hours ago










1 Answer
1






active

oldest

votes


















3














documentclass{article}
usepackage{graphicx}
newcommandaddtofigtoks[1]{expandafterfigtoksexpandafter
{thefigtoks#1}}
newtoksfigtoks
newcommandfigCapLab[3][htbp]{%
figtoks{begin{figure}[#1]}
addtofigtoks{centering}
addtofigtoks{includegraphics[width=#2textwidth]{#3}}
optcap
}
newcommandoptcap[1][relax]{%
ifxrelax#1relax
addtofigtoks{end{figure}}
thefigtoks
else
addtofigtoks{caption{#1}}%
expandafterlabelopt
fi
}
newcommandlabelopt[1][relax]{%
ifxrelax#1relaxelseaddtofigtoks{label{#1}}fi
addtofigtoks{end{figure}}
thefigtoks
}
begin{document}
figCapLab{.2}{example-image-a}
figCapLab{.2}{example-image-b}[My caption]
figCapLab{.2}{example-image-c}[My caption][fg:label1]
figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

In figures ref{fg:label1} and ref{fg:label2}...
end{document}


enter image description here



Ack-shu-ally, the more I think of it, tokens are not even needed:



documentclass{article}
usepackage{graphicx}
newcommandfigCapLab[3][htbp]{%
begin{figure}[#1]
centering
includegraphics[width=#2textwidth]{#3}
optcap
}
newcommandoptcap[1][relax]{%
ifxrelax#1relax
end{figure}
else
caption{#1}%
expandafterlabelopt
fi
}
newcommandlabelopt[1][relax]{%
ifxrelax#1relaxelselabel{#1}fi
end{figure}
}
begin{document}
figCapLab{.2}{example-image-a}
figCapLab{.2}{example-image-b}[My caption]
figCapLab{.2}{example-image-c}[My caption][fg:label1]
figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

In figures ref{fg:label1} and ref{fg:label2}...
end{document}





share|improve this answer

























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    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    3














    documentclass{article}
    usepackage{graphicx}
    newcommandaddtofigtoks[1]{expandafterfigtoksexpandafter
    {thefigtoks#1}}
    newtoksfigtoks
    newcommandfigCapLab[3][htbp]{%
    figtoks{begin{figure}[#1]}
    addtofigtoks{centering}
    addtofigtoks{includegraphics[width=#2textwidth]{#3}}
    optcap
    }
    newcommandoptcap[1][relax]{%
    ifxrelax#1relax
    addtofigtoks{end{figure}}
    thefigtoks
    else
    addtofigtoks{caption{#1}}%
    expandafterlabelopt
    fi
    }
    newcommandlabelopt[1][relax]{%
    ifxrelax#1relaxelseaddtofigtoks{label{#1}}fi
    addtofigtoks{end{figure}}
    thefigtoks
    }
    begin{document}
    figCapLab{.2}{example-image-a}
    figCapLab{.2}{example-image-b}[My caption]
    figCapLab{.2}{example-image-c}[My caption][fg:label1]
    figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

    In figures ref{fg:label1} and ref{fg:label2}...
    end{document}


    enter image description here



    Ack-shu-ally, the more I think of it, tokens are not even needed:



    documentclass{article}
    usepackage{graphicx}
    newcommandfigCapLab[3][htbp]{%
    begin{figure}[#1]
    centering
    includegraphics[width=#2textwidth]{#3}
    optcap
    }
    newcommandoptcap[1][relax]{%
    ifxrelax#1relax
    end{figure}
    else
    caption{#1}%
    expandafterlabelopt
    fi
    }
    newcommandlabelopt[1][relax]{%
    ifxrelax#1relaxelselabel{#1}fi
    end{figure}
    }
    begin{document}
    figCapLab{.2}{example-image-a}
    figCapLab{.2}{example-image-b}[My caption]
    figCapLab{.2}{example-image-c}[My caption][fg:label1]
    figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

    In figures ref{fg:label1} and ref{fg:label2}...
    end{document}





    share|improve this answer






























      3














      documentclass{article}
      usepackage{graphicx}
      newcommandaddtofigtoks[1]{expandafterfigtoksexpandafter
      {thefigtoks#1}}
      newtoksfigtoks
      newcommandfigCapLab[3][htbp]{%
      figtoks{begin{figure}[#1]}
      addtofigtoks{centering}
      addtofigtoks{includegraphics[width=#2textwidth]{#3}}
      optcap
      }
      newcommandoptcap[1][relax]{%
      ifxrelax#1relax
      addtofigtoks{end{figure}}
      thefigtoks
      else
      addtofigtoks{caption{#1}}%
      expandafterlabelopt
      fi
      }
      newcommandlabelopt[1][relax]{%
      ifxrelax#1relaxelseaddtofigtoks{label{#1}}fi
      addtofigtoks{end{figure}}
      thefigtoks
      }
      begin{document}
      figCapLab{.2}{example-image-a}
      figCapLab{.2}{example-image-b}[My caption]
      figCapLab{.2}{example-image-c}[My caption][fg:label1]
      figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

      In figures ref{fg:label1} and ref{fg:label2}...
      end{document}


      enter image description here



      Ack-shu-ally, the more I think of it, tokens are not even needed:



      documentclass{article}
      usepackage{graphicx}
      newcommandfigCapLab[3][htbp]{%
      begin{figure}[#1]
      centering
      includegraphics[width=#2textwidth]{#3}
      optcap
      }
      newcommandoptcap[1][relax]{%
      ifxrelax#1relax
      end{figure}
      else
      caption{#1}%
      expandafterlabelopt
      fi
      }
      newcommandlabelopt[1][relax]{%
      ifxrelax#1relaxelselabel{#1}fi
      end{figure}
      }
      begin{document}
      figCapLab{.2}{example-image-a}
      figCapLab{.2}{example-image-b}[My caption]
      figCapLab{.2}{example-image-c}[My caption][fg:label1]
      figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

      In figures ref{fg:label1} and ref{fg:label2}...
      end{document}





      share|improve this answer




























        3












        3








        3







        documentclass{article}
        usepackage{graphicx}
        newcommandaddtofigtoks[1]{expandafterfigtoksexpandafter
        {thefigtoks#1}}
        newtoksfigtoks
        newcommandfigCapLab[3][htbp]{%
        figtoks{begin{figure}[#1]}
        addtofigtoks{centering}
        addtofigtoks{includegraphics[width=#2textwidth]{#3}}
        optcap
        }
        newcommandoptcap[1][relax]{%
        ifxrelax#1relax
        addtofigtoks{end{figure}}
        thefigtoks
        else
        addtofigtoks{caption{#1}}%
        expandafterlabelopt
        fi
        }
        newcommandlabelopt[1][relax]{%
        ifxrelax#1relaxelseaddtofigtoks{label{#1}}fi
        addtofigtoks{end{figure}}
        thefigtoks
        }
        begin{document}
        figCapLab{.2}{example-image-a}
        figCapLab{.2}{example-image-b}[My caption]
        figCapLab{.2}{example-image-c}[My caption][fg:label1]
        figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

        In figures ref{fg:label1} and ref{fg:label2}...
        end{document}


        enter image description here



        Ack-shu-ally, the more I think of it, tokens are not even needed:



        documentclass{article}
        usepackage{graphicx}
        newcommandfigCapLab[3][htbp]{%
        begin{figure}[#1]
        centering
        includegraphics[width=#2textwidth]{#3}
        optcap
        }
        newcommandoptcap[1][relax]{%
        ifxrelax#1relax
        end{figure}
        else
        caption{#1}%
        expandafterlabelopt
        fi
        }
        newcommandlabelopt[1][relax]{%
        ifxrelax#1relaxelselabel{#1}fi
        end{figure}
        }
        begin{document}
        figCapLab{.2}{example-image-a}
        figCapLab{.2}{example-image-b}[My caption]
        figCapLab{.2}{example-image-c}[My caption][fg:label1]
        figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

        In figures ref{fg:label1} and ref{fg:label2}...
        end{document}





        share|improve this answer















        documentclass{article}
        usepackage{graphicx}
        newcommandaddtofigtoks[1]{expandafterfigtoksexpandafter
        {thefigtoks#1}}
        newtoksfigtoks
        newcommandfigCapLab[3][htbp]{%
        figtoks{begin{figure}[#1]}
        addtofigtoks{centering}
        addtofigtoks{includegraphics[width=#2textwidth]{#3}}
        optcap
        }
        newcommandoptcap[1][relax]{%
        ifxrelax#1relax
        addtofigtoks{end{figure}}
        thefigtoks
        else
        addtofigtoks{caption{#1}}%
        expandafterlabelopt
        fi
        }
        newcommandlabelopt[1][relax]{%
        ifxrelax#1relaxelseaddtofigtoks{label{#1}}fi
        addtofigtoks{end{figure}}
        thefigtoks
        }
        begin{document}
        figCapLab{.2}{example-image-a}
        figCapLab{.2}{example-image-b}[My caption]
        figCapLab{.2}{example-image-c}[My caption][fg:label1]
        figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

        In figures ref{fg:label1} and ref{fg:label2}...
        end{document}


        enter image description here



        Ack-shu-ally, the more I think of it, tokens are not even needed:



        documentclass{article}
        usepackage{graphicx}
        newcommandfigCapLab[3][htbp]{%
        begin{figure}[#1]
        centering
        includegraphics[width=#2textwidth]{#3}
        optcap
        }
        newcommandoptcap[1][relax]{%
        ifxrelax#1relax
        end{figure}
        else
        caption{#1}%
        expandafterlabelopt
        fi
        }
        newcommandlabelopt[1][relax]{%
        ifxrelax#1relaxelselabel{#1}fi
        end{figure}
        }
        begin{document}
        figCapLab{.2}{example-image-a}
        figCapLab{.2}{example-image-b}[My caption]
        figCapLab{.2}{example-image-c}[My caption][fg:label1]
        figCapLab[p]{.2}{example-image}[Other caption][fg:label2]

        In figures ref{fg:label1} and ref{fg:label2}...
        end{document}






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        edited 1 hour ago

























        answered 2 hours ago









        Steven B. SegletesSteven B. Segletes

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