Syntax for `NewDocumentCommand`











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The xparse documentation gives examples of names of NewDocumentCommands enclosed in braces, and without braces, as demonstrated in the two commands below. Is there any difference in functionality whatsoever between the two? I never use braces and better be safe than sorry. 



documentclass{article}

%=======================

usepackage{xparse}

%-----------------------

ExplSyntaxOn

NewDocumentCommandmyExp{m}{#1}

NewDocumentCommand{myExpAlt}{m}{#1}

ExplSyntaxOff

%-----------------------

begin{document}

  myExp{101}



  myExpAlt{123}

end{document}





xparse







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  • 2




    In your example, there is no need for ExplSyntaxOn...ExplSyntaxOff.
    – Werner
    1 hour ago















up vote
5
down vote

favorite












The xparse documentation gives examples of names of NewDocumentCommands enclosed in braces, and without braces, as demonstrated in the two commands below. Is there any difference in functionality whatsoever between the two? I never use braces and better be safe than sorry. 



documentclass{article}

%=======================

usepackage{xparse}

%-----------------------

ExplSyntaxOn

NewDocumentCommandmyExp{m}{#1}

NewDocumentCommand{myExpAlt}{m}{#1}

ExplSyntaxOff

%-----------------------

begin{document}

  myExp{101}



  myExpAlt{123}

end{document}





xparse







share|improve this question


















  • 2




    In your example, there is no need for ExplSyntaxOn...ExplSyntaxOff.
    – Werner
    1 hour ago













up vote
5
down vote

favorite









up vote
5
down vote

favorite











The xparse documentation gives examples of names of NewDocumentCommands enclosed in braces, and without braces, as demonstrated in the two commands below. Is there any difference in functionality whatsoever between the two? I never use braces and better be safe than sorry. 



documentclass{article}

%=======================

usepackage{xparse}

%-----------------------

ExplSyntaxOn

NewDocumentCommandmyExp{m}{#1}

NewDocumentCommand{myExpAlt}{m}{#1}

ExplSyntaxOff

%-----------------------

begin{document}

  myExp{101}



  myExpAlt{123}

end{document}





xparse







share|improve this question













The xparse documentation gives examples of names of NewDocumentCommands enclosed in braces, and without braces, as demonstrated in the two commands below. Is there any difference in functionality whatsoever between the two? I never use braces and better be safe than sorry. 



documentclass{article}

%=======================

usepackage{xparse}

%-----------------------

ExplSyntaxOn

NewDocumentCommandmyExp{m}{#1}

NewDocumentCommand{myExpAlt}{m}{#1}

ExplSyntaxOff

%-----------------------

begin{document}

  myExp{101}



  myExpAlt{123}

end{document}





xparse




xparse






share|improve this question













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share|improve this question










asked 1 hour ago









Reinhard Neuwirth

1,52211322




1,52211322








  • 2




    In your example, there is no need for ExplSyntaxOn...ExplSyntaxOff.
    – Werner
    1 hour ago














  • 2




    In your example, there is no need for ExplSyntaxOn...ExplSyntaxOff.
    – Werner
    1 hour ago








2




2




In your example, there is no need for ExplSyntaxOn...ExplSyntaxOff.
– Werner
1 hour ago




In your example, there is no need for ExplSyntaxOn...ExplSyntaxOff.
– Werner
1 hour ago










1 Answer
1






active

oldest

votes

















up vote
5
down vote



accepted










There is no difference, similar to the notation used with newcommand and friends, as long as you pass it a control sequence. Technically you're passing an argument to newcommand, which is then set using def internally, so you should use {<csname>}. However, if you don't use braces, the first token is grabbed.






share|improve this answer





















  • Reassuring that there is no harm in not using braces, but formal correctness would dictate to use {<csname>}.
    – Reinhard Neuwirth
    39 mins ago











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
5
down vote



accepted










There is no difference, similar to the notation used with newcommand and friends, as long as you pass it a control sequence. Technically you're passing an argument to newcommand, which is then set using def internally, so you should use {<csname>}. However, if you don't use braces, the first token is grabbed.






share|improve this answer





















  • Reassuring that there is no harm in not using braces, but formal correctness would dictate to use {<csname>}.
    – Reinhard Neuwirth
    39 mins ago















up vote
5
down vote



accepted










There is no difference, similar to the notation used with newcommand and friends, as long as you pass it a control sequence. Technically you're passing an argument to newcommand, which is then set using def internally, so you should use {<csname>}. However, if you don't use braces, the first token is grabbed.






share|improve this answer





















  • Reassuring that there is no harm in not using braces, but formal correctness would dictate to use {<csname>}.
    – Reinhard Neuwirth
    39 mins ago













up vote
5
down vote



accepted







up vote
5
down vote



accepted






There is no difference, similar to the notation used with newcommand and friends, as long as you pass it a control sequence. Technically you're passing an argument to newcommand, which is then set using def internally, so you should use {<csname>}. However, if you don't use braces, the first token is grabbed.






share|improve this answer












There is no difference, similar to the notation used with newcommand and friends, as long as you pass it a control sequence. Technically you're passing an argument to newcommand, which is then set using def internally, so you should use {<csname>}. However, if you don't use braces, the first token is grabbed.







share|improve this answer












share|improve this answer



share|improve this answer










answered 1 hour ago









Werner

434k619531638




434k619531638












  • Reassuring that there is no harm in not using braces, but formal correctness would dictate to use {<csname>}.
    – Reinhard Neuwirth
    39 mins ago


















  • Reassuring that there is no harm in not using braces, but formal correctness would dictate to use {<csname>}.
    – Reinhard Neuwirth
    39 mins ago
















Reassuring that there is no harm in not using braces, but formal correctness would dictate to use {<csname>}.
– Reinhard Neuwirth
39 mins ago




Reassuring that there is no harm in not using braces, but formal correctness would dictate to use {<csname>}.
– Reinhard Neuwirth
39 mins ago


















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