What is this newcommand argument? [duplicate]

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This question already has an answer here:



  • newcommand argument confusion

    4 answers



newcommand*name[1][C]{%


I have come very familiar with newcommand however, I came across this line of code and i do not know what the [C] is for.










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marked as duplicate by Alan Munn, Stefan Pinnow, Kurt, Henri Menke, Andrew Swann Jan 21 at 8:18


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    Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

    – marmot
    Jan 21 at 3:30











  • latexref.xyz/…

    – Henri Menke
    Jan 21 at 3:39











  • @HenriMenke Is there a more modern link in which things like it do not get advertized?

    – marmot
    Jan 21 at 3:54











  • @marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

    – Henri Menke
    Jan 21 at 4:08











  • @HenriMenke Please don't get me wrong, this was not meant to criticize you. I have just seen so many cases in which users, especially new users, got interesting comments when they were using it and so on. Therefore I am really wondering if there are sources of the same information which a free of such relics.

    – marmot
    Jan 21 at 4:13















2
















This question already has an answer here:



  • newcommand argument confusion

    4 answers



newcommand*name[1][C]{%


I have come very familiar with newcommand however, I came across this line of code and i do not know what the [C] is for.










share|improve this question















marked as duplicate by Alan Munn, Stefan Pinnow, Kurt, Henri Menke, Andrew Swann Jan 21 at 8:18


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.













  • 2





    Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

    – marmot
    Jan 21 at 3:30











  • latexref.xyz/…

    – Henri Menke
    Jan 21 at 3:39











  • @HenriMenke Is there a more modern link in which things like it do not get advertized?

    – marmot
    Jan 21 at 3:54











  • @marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

    – Henri Menke
    Jan 21 at 4:08











  • @HenriMenke Please don't get me wrong, this was not meant to criticize you. I have just seen so many cases in which users, especially new users, got interesting comments when they were using it and so on. Therefore I am really wondering if there are sources of the same information which a free of such relics.

    – marmot
    Jan 21 at 4:13













2












2








2









This question already has an answer here:



  • newcommand argument confusion

    4 answers



newcommand*name[1][C]{%


I have come very familiar with newcommand however, I came across this line of code and i do not know what the [C] is for.










share|improve this question

















This question already has an answer here:



  • newcommand argument confusion

    4 answers



newcommand*name[1][C]{%


I have come very familiar with newcommand however, I came across this line of code and i do not know what the [C] is for.





This question already has an answer here:



  • newcommand argument confusion

    4 answers







macros arguments






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share|improve this question




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edited Jan 21 at 6:21









Werner

443k679781675




443k679781675










asked Jan 21 at 3:30









Jesus EscarenoJesus Escareno

111




111




marked as duplicate by Alan Munn, Stefan Pinnow, Kurt, Henri Menke, Andrew Swann Jan 21 at 8:18


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.









marked as duplicate by Alan Munn, Stefan Pinnow, Kurt, Henri Menke, Andrew Swann Jan 21 at 8:18


This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.









  • 2





    Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

    – marmot
    Jan 21 at 3:30











  • latexref.xyz/…

    – Henri Menke
    Jan 21 at 3:39











  • @HenriMenke Is there a more modern link in which things like it do not get advertized?

    – marmot
    Jan 21 at 3:54











  • @marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

    – Henri Menke
    Jan 21 at 4:08











  • @HenriMenke Please don't get me wrong, this was not meant to criticize you. I have just seen so many cases in which users, especially new users, got interesting comments when they were using it and so on. Therefore I am really wondering if there are sources of the same information which a free of such relics.

    – marmot
    Jan 21 at 4:13












  • 2





    Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

    – marmot
    Jan 21 at 3:30











  • latexref.xyz/…

    – Henri Menke
    Jan 21 at 3:39











  • @HenriMenke Is there a more modern link in which things like it do not get advertized?

    – marmot
    Jan 21 at 3:54











  • @marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

    – Henri Menke
    Jan 21 at 4:08











  • @HenriMenke Please don't get me wrong, this was not meant to criticize you. I have just seen so many cases in which users, especially new users, got interesting comments when they were using it and so on. Therefore I am really wondering if there are sources of the same information which a free of such relics.

    – marmot
    Jan 21 at 4:13







2




2





Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

– marmot
Jan 21 at 3:30





Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

– marmot
Jan 21 at 3:30













latexref.xyz/…

– Henri Menke
Jan 21 at 3:39





latexref.xyz/…

– Henri Menke
Jan 21 at 3:39













@HenriMenke Is there a more modern link in which things like it do not get advertized?

– marmot
Jan 21 at 3:54





@HenriMenke Is there a more modern link in which things like it do not get advertized?

– marmot
Jan 21 at 3:54













@marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

– Henri Menke
Jan 21 at 4:08





@marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

– Henri Menke
Jan 21 at 4:08













@HenriMenke Please don't get me wrong, this was not meant to criticize you. I have just seen so many cases in which users, especially new users, got interesting comments when they were using it and so on. Therefore I am really wondering if there are sources of the same information which a free of such relics.

– marmot
Jan 21 at 4:13





@HenriMenke Please don't get me wrong, this was not meant to criticize you. I have just seen so many cases in which users, especially new users, got interesting comments when they were using it and so on. Therefore I am really wondering if there are sources of the same information which a free of such relics.

– marmot
Jan 21 at 4:13










1 Answer
1






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oldest

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4














LaTeX's newcommand has the following syntax:




newcommand *<FOO>[<i>]<TEXT>


User command to define FOO to be a macro with i arguments (i = 0 if missing)
having the definition <TEXT>. Produces an error if FOO already defined.
Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
and a blank line in any argument to the command would generate an error.




If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



So, as an example, consider



newcommandFOO[2]<TEXT>


This command has two mandatory arguments and is therefore used as FOO<one><two>. However,



newcommandFOO[2][X]<TEXT>


takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO<one> (which is equivalent to FOO[X]<one>) or FOO[<one>]<two>. Similarly,



newcommandFOO[1][X]<TEXT>


takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




In your particular case,



newcommand*name[1][C]<TEXT>


defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



Reference:



  • LaTeX2e sources


  • What do newcommand, renewcommand, and providecommand do, and how do they differ?


  • What is the difference between def and newcommand?






share|improve this answer





























    1 Answer
    1






    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    4














    LaTeX's newcommand has the following syntax:




    newcommand *<FOO>[<i>]<TEXT>


    User command to define FOO to be a macro with i arguments (i = 0 if missing)
    having the definition <TEXT>. Produces an error if FOO already defined.
    Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
    and a blank line in any argument to the command would generate an error.




    If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



    So, as an example, consider



    newcommandFOO[2]<TEXT>


    This command has two mandatory arguments and is therefore used as FOO<one><two>. However,



    newcommandFOO[2][X]<TEXT>


    takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO<one> (which is equivalent to FOO[X]<one>) or FOO[<one>]<two>. Similarly,



    newcommandFOO[1][X]<TEXT>


    takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




    In your particular case,



    newcommand*name[1][C]<TEXT>


    defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



    Reference:



    • LaTeX2e sources


    • What do newcommand, renewcommand, and providecommand do, and how do they differ?


    • What is the difference between def and newcommand?






    share|improve this answer



























      4














      LaTeX's newcommand has the following syntax:




      newcommand *<FOO>[<i>]<TEXT>


      User command to define FOO to be a macro with i arguments (i = 0 if missing)
      having the definition <TEXT>. Produces an error if FOO already defined.
      Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
      and a blank line in any argument to the command would generate an error.




      If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



      So, as an example, consider



      newcommandFOO[2]<TEXT>


      This command has two mandatory arguments and is therefore used as FOO<one><two>. However,



      newcommandFOO[2][X]<TEXT>


      takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO<one> (which is equivalent to FOO[X]<one>) or FOO[<one>]<two>. Similarly,



      newcommandFOO[1][X]<TEXT>


      takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




      In your particular case,



      newcommand*name[1][C]<TEXT>


      defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



      Reference:



      • LaTeX2e sources


      • What do newcommand, renewcommand, and providecommand do, and how do they differ?


      • What is the difference between def and newcommand?






      share|improve this answer

























        4












        4








        4







        LaTeX's newcommand has the following syntax:




        newcommand *<FOO>[<i>]<TEXT>


        User command to define FOO to be a macro with i arguments (i = 0 if missing)
        having the definition <TEXT>. Produces an error if FOO already defined.
        Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
        and a blank line in any argument to the command would generate an error.




        If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



        So, as an example, consider



        newcommandFOO[2]<TEXT>


        This command has two mandatory arguments and is therefore used as FOO<one><two>. However,



        newcommandFOO[2][X]<TEXT>


        takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO<one> (which is equivalent to FOO[X]<one>) or FOO[<one>]<two>. Similarly,



        newcommandFOO[1][X]<TEXT>


        takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




        In your particular case,



        newcommand*name[1][C]<TEXT>


        defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



        Reference:



        • LaTeX2e sources


        • What do newcommand, renewcommand, and providecommand do, and how do they differ?


        • What is the difference between def and newcommand?






        share|improve this answer













        LaTeX's newcommand has the following syntax:




        newcommand *<FOO>[<i>]<TEXT>


        User command to define FOO to be a macro with i arguments (i = 0 if missing)
        having the definition <TEXT>. Produces an error if FOO already defined.
        Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
        and a blank line in any argument to the command would generate an error.




        If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



        So, as an example, consider



        newcommandFOO[2]<TEXT>


        This command has two mandatory arguments and is therefore used as FOO<one><two>. However,



        newcommandFOO[2][X]<TEXT>


        takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO<one> (which is equivalent to FOO[X]<one>) or FOO[<one>]<two>. Similarly,



        newcommandFOO[1][X]<TEXT>


        takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




        In your particular case,



        newcommand*name[1][C]<TEXT>


        defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



        Reference:



        • LaTeX2e sources


        • What do newcommand, renewcommand, and providecommand do, and how do they differ?


        • What is the difference between def and newcommand?







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jan 21 at 6:21









        WernerWerner

        443k679781675




        443k679781675












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