What is the difference between somecmd and csname somecmdendcsname?












1















This is a demo



documentclass{article}
usepackage{soul}
makeatletter
newcommand{mydef}[2]{%
expandafterdefcsname my#1endcsname {#2}
}
newcommand{mygetdef}[1]{%
ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
}
makeatother

deftest{some text to complete}
mydef{xxx}{some text to complete}

begin{document}
ultest % it works
%%%% if uncomment, the below one does not work, an error is reported
% ulmygetdef{xxx}
end{document}


As the comment says, if ulmygetdef{xxx} takes place, there comes a error:



! Argument of SOUL@@ has an extra }.










share|improve this question



























    1















    This is a demo



    documentclass{article}
    usepackage{soul}
    makeatletter
    newcommand{mydef}[2]{%
    expandafterdefcsname my#1endcsname {#2}
    }
    newcommand{mygetdef}[1]{%
    ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
    }
    makeatother

    deftest{some text to complete}
    mydef{xxx}{some text to complete}

    begin{document}
    ultest % it works
    %%%% if uncomment, the below one does not work, an error is reported
    % ulmygetdef{xxx}
    end{document}


    As the comment says, if ulmygetdef{xxx} takes place, there comes a error:



    ! Argument of SOUL@@ has an extra }.










    share|improve this question

























      1












      1








      1








      This is a demo



      documentclass{article}
      usepackage{soul}
      makeatletter
      newcommand{mydef}[2]{%
      expandafterdefcsname my#1endcsname {#2}
      }
      newcommand{mygetdef}[1]{%
      ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
      }
      makeatother

      deftest{some text to complete}
      mydef{xxx}{some text to complete}

      begin{document}
      ultest % it works
      %%%% if uncomment, the below one does not work, an error is reported
      % ulmygetdef{xxx}
      end{document}


      As the comment says, if ulmygetdef{xxx} takes place, there comes a error:



      ! Argument of SOUL@@ has an extra }.










      share|improve this question














      This is a demo



      documentclass{article}
      usepackage{soul}
      makeatletter
      newcommand{mydef}[2]{%
      expandafterdefcsname my#1endcsname {#2}
      }
      newcommand{mygetdef}[1]{%
      ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
      }
      makeatother

      deftest{some text to complete}
      mydef{xxx}{some text to complete}

      begin{document}
      ultest % it works
      %%%% if uncomment, the below one does not work, an error is reported
      % ulmygetdef{xxx}
      end{document}


      As the comment says, if ulmygetdef{xxx} takes place, there comes a error:



      ! Argument of SOUL@@ has an extra }.







      soul csname






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 1 hour ago









      jiewuzajiewuza

      676




      676






















          1 Answer
          1






          active

          oldest

          votes


















          0














          Try



          edeftmp{mygetdef{xxx}}
          ultmp


          The mygetdef needs to be expanded before being passed to ul.



          documentclass{article}
          usepackage{soul}
          makeatletter
          newcommand{mydef}[2]{%
          expandafterdefcsname my#1endcsname {#2}
          }
          newcommand{mygetdef}[1]{%
          ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
          }
          makeatother

          deftest{some text to complete}
          mydef{xxx}{some text to complete}

          begin{document}
          ultest % it works
          %%%% if uncomment, the below one does not work, an error is reported
          % ulmygetdef{xxx}

          edeftmp{mygetdef{xxx}}
          ultmp
          end{document}


          enter image description here






          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









            0














            Try



            edeftmp{mygetdef{xxx}}
            ultmp


            The mygetdef needs to be expanded before being passed to ul.



            documentclass{article}
            usepackage{soul}
            makeatletter
            newcommand{mydef}[2]{%
            expandafterdefcsname my#1endcsname {#2}
            }
            newcommand{mygetdef}[1]{%
            ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
            }
            makeatother

            deftest{some text to complete}
            mydef{xxx}{some text to complete}

            begin{document}
            ultest % it works
            %%%% if uncomment, the below one does not work, an error is reported
            % ulmygetdef{xxx}

            edeftmp{mygetdef{xxx}}
            ultmp
            end{document}


            enter image description here






            share|improve this answer




























              0














              Try



              edeftmp{mygetdef{xxx}}
              ultmp


              The mygetdef needs to be expanded before being passed to ul.



              documentclass{article}
              usepackage{soul}
              makeatletter
              newcommand{mydef}[2]{%
              expandafterdefcsname my#1endcsname {#2}
              }
              newcommand{mygetdef}[1]{%
              ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
              }
              makeatother

              deftest{some text to complete}
              mydef{xxx}{some text to complete}

              begin{document}
              ultest % it works
              %%%% if uncomment, the below one does not work, an error is reported
              % ulmygetdef{xxx}

              edeftmp{mygetdef{xxx}}
              ultmp
              end{document}


              enter image description here






              share|improve this answer


























                0












                0








                0







                Try



                edeftmp{mygetdef{xxx}}
                ultmp


                The mygetdef needs to be expanded before being passed to ul.



                documentclass{article}
                usepackage{soul}
                makeatletter
                newcommand{mydef}[2]{%
                expandafterdefcsname my#1endcsname {#2}
                }
                newcommand{mygetdef}[1]{%
                ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
                }
                makeatother

                deftest{some text to complete}
                mydef{xxx}{some text to complete}

                begin{document}
                ultest % it works
                %%%% if uncomment, the below one does not work, an error is reported
                % ulmygetdef{xxx}

                edeftmp{mygetdef{xxx}}
                ultmp
                end{document}


                enter image description here






                share|improve this answer













                Try



                edeftmp{mygetdef{xxx}}
                ultmp


                The mygetdef needs to be expanded before being passed to ul.



                documentclass{article}
                usepackage{soul}
                makeatletter
                newcommand{mydef}[2]{%
                expandafterdefcsname my#1endcsname {#2}
                }
                newcommand{mygetdef}[1]{%
                ifcsname my#1endcsname csname my#1endcsname else #1 not defined fi%
                }
                makeatother

                deftest{some text to complete}
                mydef{xxx}{some text to complete}

                begin{document}
                ultest % it works
                %%%% if uncomment, the below one does not work, an error is reported
                % ulmygetdef{xxx}

                edeftmp{mygetdef{xxx}}
                ultmp
                end{document}


                enter image description here







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 50 mins ago









                Steven B. SegletesSteven B. Segletes

                159k9204412




                159k9204412






























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