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What is the difference between somecmd and csname somecmdendcsname?


Switching a string in a token register to lowercase and processing via the package soulUnderline just words, not the space between them`Undefined control sequence` error when trying to write the value of a csname…endcsname control-sequence to the log fileWhat causes the difference appearance by the useages of two “csname…endcsname”?expandafter and csnameProblem with `expandafter` and `csname`Why can I not use string to prevent the expansion of csname?Expansion rules for csname/endcsname inside edefhow to add vertical space between words and the underline effect?













0















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























  • Try edeftmp{mygetdef{xxx}} ultmp

    – Steven B. Segletes
    12 secs ago
















0















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























  • Try edeftmp{mygetdef{xxx}} ultmp

    – Steven B. Segletes
    12 secs ago














0












0








0








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














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












share










share



share










asked 9 mins ago









jiewuzajiewuza

626




626













  • Try edeftmp{mygetdef{xxx}} ultmp

    – Steven B. Segletes
    12 secs ago



















  • Try edeftmp{mygetdef{xxx}} ultmp

    – Steven B. Segletes
    12 secs ago

















Try edeftmp{mygetdef{xxx}} ultmp

– Steven B. Segletes
12 secs ago





Try edeftmp{mygetdef{xxx}} ultmp

– Steven B. Segletes
12 secs ago










0






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