Generating multiple versions of a document using options











up vote
17
down vote

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4












Before I start, I want to say that I have already read this post and this post



I am writing a paper in two languages. I want to write other language version of every paragraphs and title just below the original version.



Is the any two switch two language by using same options like



Lang == Esp

if{Lang=Eng}
chapter{LITERATURE}
elif
chapter{LITERATURA}


or



if{Lang=Eng}
{I love you.}
elif
{Te quiero.}


Is there any way to do that?










share|improve this question









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i2_ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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    up vote
    17
    down vote

    favorite
    4












    Before I start, I want to say that I have already read this post and this post



    I am writing a paper in two languages. I want to write other language version of every paragraphs and title just below the original version.



    Is the any two switch two language by using same options like



    Lang == Esp

    if{Lang=Eng}
    chapter{LITERATURE}
    elif
    chapter{LITERATURA}


    or



    if{Lang=Eng}
    {I love you.}
    elif
    {Te quiero.}


    Is there any way to do that?










    share|improve this question









    New contributor




    i2_ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      up vote
      17
      down vote

      favorite
      4









      up vote
      17
      down vote

      favorite
      4






      4





      Before I start, I want to say that I have already read this post and this post



      I am writing a paper in two languages. I want to write other language version of every paragraphs and title just below the original version.



      Is the any two switch two language by using same options like



      Lang == Esp

      if{Lang=Eng}
      chapter{LITERATURE}
      elif
      chapter{LITERATURA}


      or



      if{Lang=Eng}
      {I love you.}
      elif
      {Te quiero.}


      Is there any way to do that?










      share|improve this question









      New contributor




      i2_ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      Before I start, I want to say that I have already read this post and this post



      I am writing a paper in two languages. I want to write other language version of every paragraphs and title just below the original version.



      Is the any two switch two language by using same options like



      Lang == Esp

      if{Lang=Eng}
      chapter{LITERATURE}
      elif
      chapter{LITERATURA}


      or



      if{Lang=Eng}
      {I love you.}
      elif
      {Te quiero.}


      Is there any way to do that?







      conditionals languages






      share|improve this question









      New contributor




      i2_ 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




      i2_ 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 Nov 27 at 12:05









      Phelype Oleinik

      20.9k54380




      20.9k54380






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      asked Nov 27 at 10:14









      i2_

      884




      884




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      i2_ is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






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      Check out our Code of Conduct.






















          5 Answers
          5






          active

          oldest

          votes

















          up vote
          13
          down vote



          accepted










          You could use an approach like the following, I use it to create various versions of a CV document.



          documentclass{minimal}

          usepackage{ifthen}
          newboolean{somevariable}
          setboolean{somevariable}{false}

          begin{document}

          ifthenelse{boolean{somevariable}}{Text if somevariable is true.}{Text if somevariable is false.}

          end{document}





          share|improve this answer





















          • Works smoothly. This is what i need it. Thank you!!!
            – i2_
            Nov 27 at 11:43






          • 1




            Then please tag my answer as the solution. It helps other to find it more easily.
            – Uwe Ziegenhagen
            Nov 27 at 15:41


















          up vote
          15
          down vote













          There's always docstrip, which lets you distinguish one code from another using special comments (called guards) and also have code which is common to both.



          In my opinion, the advantage of this method over the conditionals is that it's fairly simple to add more languages avoiding the hassle of nesting conditionals.



          For instance, you can have a source file (let's call it source.dtx, but any other name will do):



          documentclass{book}
          begin{document}

          %<english>chapter{LITERATURE}
          %<spanish>chapter{LITERATURA}

          %<*english>
          emph{The Tau Manifesto} is dedicated to one of the most important numbers in
          mathematics, perhaps emph{the} most important: the emph{circle constant} relating
          the circumference of a circle to its linear dimension. For millennia, the circle has
          been considered the most perfect of shapes, and the circle constant captures the
          geometry of the circle in a single number. Of course, the traditional choice for
          the circle constant is $pi$--but, as mathematician Bob Palais notes in his
          delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
          things right.
          %</english>

          %<*spanish>
          emph{El Manifiesto de Tau} está dedicado a uno de los números más importantes en
          matemáticas, quizás emph{el} más importante: la emph{constante de círculo} que relaciona
          la circunferencia de un círculo con su dimensión lineal. Durante milenios, el círculo ha
          sido considerado la forma más perfecta, y la constante del círculo captura la
          geometría del círculo en un solo número. Por supuesto, la elección tradicional para
          la constante de círculo es $pi$--pero, como señala el matemático Bob Palais en su
          artículo encantador ``$pi$ Is Wrong!'', $Pi$ emph{es incorrecto}. Es hora de arreglar las cosas.
          %</spanish>

          end{document}


          (sample text taken from here and Google-Translated to Spanish)



          then you only need a so-called “installation file”:



          input docstrip % Loads the docstrip program
          % Optional switches
          askforoverwritefalse % Allows it to overwrite older files without asking
          keepsilent % Reduces verbosity
          nopreamble % Removes preamble
          nopostamble % removes postamble
          % Separating sources:
          generate{%
          %
          file{english.tex}{%
          from{source.dtx}{english}%
          }%
          %
          file{spanish.tex}{%
          from{source.dtx}{spanish}%
          }%
          %
          }
          % Exiting
          endbatchfile


          which will generate an english.tex file from the parts that are marked as <english> in the source.dtx and another one called spanish.tex from the parts marked with <spanish> in the source.dtx. The parts of the source.dtx which aren't marked go to both output files.



          To execute this you only need to run TeX on the installation file:



          > pdftex installation.ins


          The generated english.tex will look like this:



          documentclass{book}
          begin{document}

          chapter{LITERATURE}

          emph{The Tau Manifesto} is dedicated to one of the most important numbers in
          mathematics, perhaps emph{the} most important: the emph{circle constant} relating
          the circumference of a circle to its linear dimension. For millennia, the circle has
          been considered the most perfect of shapes, and the circle constant captures the
          geometry of the circle in a single number. Of course, the traditional choice for
          the circle constant is $pi$--but, as mathematician Bob Palais notes in his
          delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
          things right.


          end{document}





          share|improve this answer





















          • This solution also works and as you said we definitely work on cleaner source tex. But in this case i do not want to create new files. Thank you anyway!
            – i2_
            Nov 27 at 12:26






          • 2




            @i2_ I'm afraid there's no way to use docstrip without generating other source files. In fact, this is the purpose of docstrip: to generate usable TeX code from one (or more) source files. But, if you can live with the multiple files (why, not; LaTeX creates a bunch of them anyway :-), since this operates “outside” the TeX run of your document, you don't have to worry about verbatim content being messed up, and you can do some other tricks which aren't possible when you need to keep braces and groups balanced. Pros and cons of each method :)
            – Phelype Oleinik
            Nov 27 at 12:48


















          up vote
          11
          down vote













          You can use the iflang package:



          documentclass{article}
          usepackage[english,ngerman]{babel}
          usepackage{iflang}
          begin{document}

          IfLanguageName{english}{This is english}{This is not english}

          IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

          selectlanguage{english}

          IfLanguageName{english}{This is english}{This not english}

          IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

          end{document}


          enter image description here






          share|improve this answer




























            up vote
            7
            down vote













            The comment package makes it easy to define arbitrary throw-away environments:



            documentclass{article}
            usepackage{comment}


            % define comment sections that are either included or excluded
            excludecomment{ENG}
            includecomment{GER}

            begin{document}

            begin{ENG}
            In the beginning was the Word, and the Word was with God, and the Word was God.
            end{ENG}

            begin{GER}
            Am Anfang war das Wort und das Wort war bei Gott und Gott war das Wort.
            end{GER}

            end{document}


            If one defines both environments with includecomment, both will become part of the output.



            Technically, this comes close to the docstrip approach suggested by Phelype Oleinik as the excluded sections are actually gobbled (lexically thrown away), that is, not compiled by the tex compiler.






            share|improve this answer




























              up vote
              5
              down vote













              You can do it quite smoothly using ConTeXt, another TeX engine. It has a mode option that you can pass as an option. When compiling with mode=thismode, everything enclosed in the proper startmode[thismode] stopmode pair will be interpreted.



              Here is a MWE



              startmode[english]
              language[en]
              stopmode
              startmode[espanol]
              language[es]
              stopmode

              starttext
              startmode[english]
              I love you
              stopmode
              startmode[espanol]
              Te quiero.
              stopmode
              stoptext


              Paste this MWE in mwe.tex and compare the output of context --mode=english mwe.tex and context --mode=espanol mwe.tex. If you want to have the two texts next to another, context --mode=english,espanol mwe.tex will do it.






              share|improve this answer























              • Works smoothly too. Thank you :)
                – i2_
                Nov 27 at 11:44










              • If you think my post was useful, please upvote it, this is the usual way to thank here. You can upvote as many answers as you want (including the one you accepted).
                – sztruks
                Nov 27 at 12:02











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              5 Answers
              5






              active

              oldest

              votes








              5 Answers
              5






              active

              oldest

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              active

              oldest

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              active

              oldest

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              up vote
              13
              down vote



              accepted










              You could use an approach like the following, I use it to create various versions of a CV document.



              documentclass{minimal}

              usepackage{ifthen}
              newboolean{somevariable}
              setboolean{somevariable}{false}

              begin{document}

              ifthenelse{boolean{somevariable}}{Text if somevariable is true.}{Text if somevariable is false.}

              end{document}





              share|improve this answer





















              • Works smoothly. This is what i need it. Thank you!!!
                – i2_
                Nov 27 at 11:43






              • 1




                Then please tag my answer as the solution. It helps other to find it more easily.
                – Uwe Ziegenhagen
                Nov 27 at 15:41















              up vote
              13
              down vote



              accepted










              You could use an approach like the following, I use it to create various versions of a CV document.



              documentclass{minimal}

              usepackage{ifthen}
              newboolean{somevariable}
              setboolean{somevariable}{false}

              begin{document}

              ifthenelse{boolean{somevariable}}{Text if somevariable is true.}{Text if somevariable is false.}

              end{document}





              share|improve this answer





















              • Works smoothly. This is what i need it. Thank you!!!
                – i2_
                Nov 27 at 11:43






              • 1




                Then please tag my answer as the solution. It helps other to find it more easily.
                – Uwe Ziegenhagen
                Nov 27 at 15:41













              up vote
              13
              down vote



              accepted







              up vote
              13
              down vote



              accepted






              You could use an approach like the following, I use it to create various versions of a CV document.



              documentclass{minimal}

              usepackage{ifthen}
              newboolean{somevariable}
              setboolean{somevariable}{false}

              begin{document}

              ifthenelse{boolean{somevariable}}{Text if somevariable is true.}{Text if somevariable is false.}

              end{document}





              share|improve this answer












              You could use an approach like the following, I use it to create various versions of a CV document.



              documentclass{minimal}

              usepackage{ifthen}
              newboolean{somevariable}
              setboolean{somevariable}{false}

              begin{document}

              ifthenelse{boolean{somevariable}}{Text if somevariable is true.}{Text if somevariable is false.}

              end{document}






              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Nov 27 at 10:32









              Uwe Ziegenhagen

              9,18343980




              9,18343980












              • Works smoothly. This is what i need it. Thank you!!!
                – i2_
                Nov 27 at 11:43






              • 1




                Then please tag my answer as the solution. It helps other to find it more easily.
                – Uwe Ziegenhagen
                Nov 27 at 15:41


















              • Works smoothly. This is what i need it. Thank you!!!
                – i2_
                Nov 27 at 11:43






              • 1




                Then please tag my answer as the solution. It helps other to find it more easily.
                – Uwe Ziegenhagen
                Nov 27 at 15:41
















              Works smoothly. This is what i need it. Thank you!!!
              – i2_
              Nov 27 at 11:43




              Works smoothly. This is what i need it. Thank you!!!
              – i2_
              Nov 27 at 11:43




              1




              1




              Then please tag my answer as the solution. It helps other to find it more easily.
              – Uwe Ziegenhagen
              Nov 27 at 15:41




              Then please tag my answer as the solution. It helps other to find it more easily.
              – Uwe Ziegenhagen
              Nov 27 at 15:41










              up vote
              15
              down vote













              There's always docstrip, which lets you distinguish one code from another using special comments (called guards) and also have code which is common to both.



              In my opinion, the advantage of this method over the conditionals is that it's fairly simple to add more languages avoiding the hassle of nesting conditionals.



              For instance, you can have a source file (let's call it source.dtx, but any other name will do):



              documentclass{book}
              begin{document}

              %<english>chapter{LITERATURE}
              %<spanish>chapter{LITERATURA}

              %<*english>
              emph{The Tau Manifesto} is dedicated to one of the most important numbers in
              mathematics, perhaps emph{the} most important: the emph{circle constant} relating
              the circumference of a circle to its linear dimension. For millennia, the circle has
              been considered the most perfect of shapes, and the circle constant captures the
              geometry of the circle in a single number. Of course, the traditional choice for
              the circle constant is $pi$--but, as mathematician Bob Palais notes in his
              delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
              things right.
              %</english>

              %<*spanish>
              emph{El Manifiesto de Tau} está dedicado a uno de los números más importantes en
              matemáticas, quizás emph{el} más importante: la emph{constante de círculo} que relaciona
              la circunferencia de un círculo con su dimensión lineal. Durante milenios, el círculo ha
              sido considerado la forma más perfecta, y la constante del círculo captura la
              geometría del círculo en un solo número. Por supuesto, la elección tradicional para
              la constante de círculo es $pi$--pero, como señala el matemático Bob Palais en su
              artículo encantador ``$pi$ Is Wrong!'', $Pi$ emph{es incorrecto}. Es hora de arreglar las cosas.
              %</spanish>

              end{document}


              (sample text taken from here and Google-Translated to Spanish)



              then you only need a so-called “installation file”:



              input docstrip % Loads the docstrip program
              % Optional switches
              askforoverwritefalse % Allows it to overwrite older files without asking
              keepsilent % Reduces verbosity
              nopreamble % Removes preamble
              nopostamble % removes postamble
              % Separating sources:
              generate{%
              %
              file{english.tex}{%
              from{source.dtx}{english}%
              }%
              %
              file{spanish.tex}{%
              from{source.dtx}{spanish}%
              }%
              %
              }
              % Exiting
              endbatchfile


              which will generate an english.tex file from the parts that are marked as <english> in the source.dtx and another one called spanish.tex from the parts marked with <spanish> in the source.dtx. The parts of the source.dtx which aren't marked go to both output files.



              To execute this you only need to run TeX on the installation file:



              > pdftex installation.ins


              The generated english.tex will look like this:



              documentclass{book}
              begin{document}

              chapter{LITERATURE}

              emph{The Tau Manifesto} is dedicated to one of the most important numbers in
              mathematics, perhaps emph{the} most important: the emph{circle constant} relating
              the circumference of a circle to its linear dimension. For millennia, the circle has
              been considered the most perfect of shapes, and the circle constant captures the
              geometry of the circle in a single number. Of course, the traditional choice for
              the circle constant is $pi$--but, as mathematician Bob Palais notes in his
              delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
              things right.


              end{document}





              share|improve this answer





















              • This solution also works and as you said we definitely work on cleaner source tex. But in this case i do not want to create new files. Thank you anyway!
                – i2_
                Nov 27 at 12:26






              • 2




                @i2_ I'm afraid there's no way to use docstrip without generating other source files. In fact, this is the purpose of docstrip: to generate usable TeX code from one (or more) source files. But, if you can live with the multiple files (why, not; LaTeX creates a bunch of them anyway :-), since this operates “outside” the TeX run of your document, you don't have to worry about verbatim content being messed up, and you can do some other tricks which aren't possible when you need to keep braces and groups balanced. Pros and cons of each method :)
                – Phelype Oleinik
                Nov 27 at 12:48















              up vote
              15
              down vote













              There's always docstrip, which lets you distinguish one code from another using special comments (called guards) and also have code which is common to both.



              In my opinion, the advantage of this method over the conditionals is that it's fairly simple to add more languages avoiding the hassle of nesting conditionals.



              For instance, you can have a source file (let's call it source.dtx, but any other name will do):



              documentclass{book}
              begin{document}

              %<english>chapter{LITERATURE}
              %<spanish>chapter{LITERATURA}

              %<*english>
              emph{The Tau Manifesto} is dedicated to one of the most important numbers in
              mathematics, perhaps emph{the} most important: the emph{circle constant} relating
              the circumference of a circle to its linear dimension. For millennia, the circle has
              been considered the most perfect of shapes, and the circle constant captures the
              geometry of the circle in a single number. Of course, the traditional choice for
              the circle constant is $pi$--but, as mathematician Bob Palais notes in his
              delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
              things right.
              %</english>

              %<*spanish>
              emph{El Manifiesto de Tau} está dedicado a uno de los números más importantes en
              matemáticas, quizás emph{el} más importante: la emph{constante de círculo} que relaciona
              la circunferencia de un círculo con su dimensión lineal. Durante milenios, el círculo ha
              sido considerado la forma más perfecta, y la constante del círculo captura la
              geometría del círculo en un solo número. Por supuesto, la elección tradicional para
              la constante de círculo es $pi$--pero, como señala el matemático Bob Palais en su
              artículo encantador ``$pi$ Is Wrong!'', $Pi$ emph{es incorrecto}. Es hora de arreglar las cosas.
              %</spanish>

              end{document}


              (sample text taken from here and Google-Translated to Spanish)



              then you only need a so-called “installation file”:



              input docstrip % Loads the docstrip program
              % Optional switches
              askforoverwritefalse % Allows it to overwrite older files without asking
              keepsilent % Reduces verbosity
              nopreamble % Removes preamble
              nopostamble % removes postamble
              % Separating sources:
              generate{%
              %
              file{english.tex}{%
              from{source.dtx}{english}%
              }%
              %
              file{spanish.tex}{%
              from{source.dtx}{spanish}%
              }%
              %
              }
              % Exiting
              endbatchfile


              which will generate an english.tex file from the parts that are marked as <english> in the source.dtx and another one called spanish.tex from the parts marked with <spanish> in the source.dtx. The parts of the source.dtx which aren't marked go to both output files.



              To execute this you only need to run TeX on the installation file:



              > pdftex installation.ins


              The generated english.tex will look like this:



              documentclass{book}
              begin{document}

              chapter{LITERATURE}

              emph{The Tau Manifesto} is dedicated to one of the most important numbers in
              mathematics, perhaps emph{the} most important: the emph{circle constant} relating
              the circumference of a circle to its linear dimension. For millennia, the circle has
              been considered the most perfect of shapes, and the circle constant captures the
              geometry of the circle in a single number. Of course, the traditional choice for
              the circle constant is $pi$--but, as mathematician Bob Palais notes in his
              delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
              things right.


              end{document}





              share|improve this answer





















              • This solution also works and as you said we definitely work on cleaner source tex. But in this case i do not want to create new files. Thank you anyway!
                – i2_
                Nov 27 at 12:26






              • 2




                @i2_ I'm afraid there's no way to use docstrip without generating other source files. In fact, this is the purpose of docstrip: to generate usable TeX code from one (or more) source files. But, if you can live with the multiple files (why, not; LaTeX creates a bunch of them anyway :-), since this operates “outside” the TeX run of your document, you don't have to worry about verbatim content being messed up, and you can do some other tricks which aren't possible when you need to keep braces and groups balanced. Pros and cons of each method :)
                – Phelype Oleinik
                Nov 27 at 12:48













              up vote
              15
              down vote










              up vote
              15
              down vote









              There's always docstrip, which lets you distinguish one code from another using special comments (called guards) and also have code which is common to both.



              In my opinion, the advantage of this method over the conditionals is that it's fairly simple to add more languages avoiding the hassle of nesting conditionals.



              For instance, you can have a source file (let's call it source.dtx, but any other name will do):



              documentclass{book}
              begin{document}

              %<english>chapter{LITERATURE}
              %<spanish>chapter{LITERATURA}

              %<*english>
              emph{The Tau Manifesto} is dedicated to one of the most important numbers in
              mathematics, perhaps emph{the} most important: the emph{circle constant} relating
              the circumference of a circle to its linear dimension. For millennia, the circle has
              been considered the most perfect of shapes, and the circle constant captures the
              geometry of the circle in a single number. Of course, the traditional choice for
              the circle constant is $pi$--but, as mathematician Bob Palais notes in his
              delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
              things right.
              %</english>

              %<*spanish>
              emph{El Manifiesto de Tau} está dedicado a uno de los números más importantes en
              matemáticas, quizás emph{el} más importante: la emph{constante de círculo} que relaciona
              la circunferencia de un círculo con su dimensión lineal. Durante milenios, el círculo ha
              sido considerado la forma más perfecta, y la constante del círculo captura la
              geometría del círculo en un solo número. Por supuesto, la elección tradicional para
              la constante de círculo es $pi$--pero, como señala el matemático Bob Palais en su
              artículo encantador ``$pi$ Is Wrong!'', $Pi$ emph{es incorrecto}. Es hora de arreglar las cosas.
              %</spanish>

              end{document}


              (sample text taken from here and Google-Translated to Spanish)



              then you only need a so-called “installation file”:



              input docstrip % Loads the docstrip program
              % Optional switches
              askforoverwritefalse % Allows it to overwrite older files without asking
              keepsilent % Reduces verbosity
              nopreamble % Removes preamble
              nopostamble % removes postamble
              % Separating sources:
              generate{%
              %
              file{english.tex}{%
              from{source.dtx}{english}%
              }%
              %
              file{spanish.tex}{%
              from{source.dtx}{spanish}%
              }%
              %
              }
              % Exiting
              endbatchfile


              which will generate an english.tex file from the parts that are marked as <english> in the source.dtx and another one called spanish.tex from the parts marked with <spanish> in the source.dtx. The parts of the source.dtx which aren't marked go to both output files.



              To execute this you only need to run TeX on the installation file:



              > pdftex installation.ins


              The generated english.tex will look like this:



              documentclass{book}
              begin{document}

              chapter{LITERATURE}

              emph{The Tau Manifesto} is dedicated to one of the most important numbers in
              mathematics, perhaps emph{the} most important: the emph{circle constant} relating
              the circumference of a circle to its linear dimension. For millennia, the circle has
              been considered the most perfect of shapes, and the circle constant captures the
              geometry of the circle in a single number. Of course, the traditional choice for
              the circle constant is $pi$--but, as mathematician Bob Palais notes in his
              delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
              things right.


              end{document}





              share|improve this answer












              There's always docstrip, which lets you distinguish one code from another using special comments (called guards) and also have code which is common to both.



              In my opinion, the advantage of this method over the conditionals is that it's fairly simple to add more languages avoiding the hassle of nesting conditionals.



              For instance, you can have a source file (let's call it source.dtx, but any other name will do):



              documentclass{book}
              begin{document}

              %<english>chapter{LITERATURE}
              %<spanish>chapter{LITERATURA}

              %<*english>
              emph{The Tau Manifesto} is dedicated to one of the most important numbers in
              mathematics, perhaps emph{the} most important: the emph{circle constant} relating
              the circumference of a circle to its linear dimension. For millennia, the circle has
              been considered the most perfect of shapes, and the circle constant captures the
              geometry of the circle in a single number. Of course, the traditional choice for
              the circle constant is $pi$--but, as mathematician Bob Palais notes in his
              delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
              things right.
              %</english>

              %<*spanish>
              emph{El Manifiesto de Tau} está dedicado a uno de los números más importantes en
              matemáticas, quizás emph{el} más importante: la emph{constante de círculo} que relaciona
              la circunferencia de un círculo con su dimensión lineal. Durante milenios, el círculo ha
              sido considerado la forma más perfecta, y la constante del círculo captura la
              geometría del círculo en un solo número. Por supuesto, la elección tradicional para
              la constante de círculo es $pi$--pero, como señala el matemático Bob Palais en su
              artículo encantador ``$pi$ Is Wrong!'', $Pi$ emph{es incorrecto}. Es hora de arreglar las cosas.
              %</spanish>

              end{document}


              (sample text taken from here and Google-Translated to Spanish)



              then you only need a so-called “installation file”:



              input docstrip % Loads the docstrip program
              % Optional switches
              askforoverwritefalse % Allows it to overwrite older files without asking
              keepsilent % Reduces verbosity
              nopreamble % Removes preamble
              nopostamble % removes postamble
              % Separating sources:
              generate{%
              %
              file{english.tex}{%
              from{source.dtx}{english}%
              }%
              %
              file{spanish.tex}{%
              from{source.dtx}{spanish}%
              }%
              %
              }
              % Exiting
              endbatchfile


              which will generate an english.tex file from the parts that are marked as <english> in the source.dtx and another one called spanish.tex from the parts marked with <spanish> in the source.dtx. The parts of the source.dtx which aren't marked go to both output files.



              To execute this you only need to run TeX on the installation file:



              > pdftex installation.ins


              The generated english.tex will look like this:



              documentclass{book}
              begin{document}

              chapter{LITERATURE}

              emph{The Tau Manifesto} is dedicated to one of the most important numbers in
              mathematics, perhaps emph{the} most important: the emph{circle constant} relating
              the circumference of a circle to its linear dimension. For millennia, the circle has
              been considered the most perfect of shapes, and the circle constant captures the
              geometry of the circle in a single number. Of course, the traditional choice for
              the circle constant is $pi$--but, as mathematician Bob Palais notes in his
              delightful article ``$pi$ Is Wrong!'', $pi$ emph{is wrong}. It's time to set
              things right.


              end{document}






              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Nov 27 at 11:51









              Phelype Oleinik

              20.9k54380




              20.9k54380












              • This solution also works and as you said we definitely work on cleaner source tex. But in this case i do not want to create new files. Thank you anyway!
                – i2_
                Nov 27 at 12:26






              • 2




                @i2_ I'm afraid there's no way to use docstrip without generating other source files. In fact, this is the purpose of docstrip: to generate usable TeX code from one (or more) source files. But, if you can live with the multiple files (why, not; LaTeX creates a bunch of them anyway :-), since this operates “outside” the TeX run of your document, you don't have to worry about verbatim content being messed up, and you can do some other tricks which aren't possible when you need to keep braces and groups balanced. Pros and cons of each method :)
                – Phelype Oleinik
                Nov 27 at 12:48


















              • This solution also works and as you said we definitely work on cleaner source tex. But in this case i do not want to create new files. Thank you anyway!
                – i2_
                Nov 27 at 12:26






              • 2




                @i2_ I'm afraid there's no way to use docstrip without generating other source files. In fact, this is the purpose of docstrip: to generate usable TeX code from one (or more) source files. But, if you can live with the multiple files (why, not; LaTeX creates a bunch of them anyway :-), since this operates “outside” the TeX run of your document, you don't have to worry about verbatim content being messed up, and you can do some other tricks which aren't possible when you need to keep braces and groups balanced. Pros and cons of each method :)
                – Phelype Oleinik
                Nov 27 at 12:48
















              This solution also works and as you said we definitely work on cleaner source tex. But in this case i do not want to create new files. Thank you anyway!
              – i2_
              Nov 27 at 12:26




              This solution also works and as you said we definitely work on cleaner source tex. But in this case i do not want to create new files. Thank you anyway!
              – i2_
              Nov 27 at 12:26




              2




              2




              @i2_ I'm afraid there's no way to use docstrip without generating other source files. In fact, this is the purpose of docstrip: to generate usable TeX code from one (or more) source files. But, if you can live with the multiple files (why, not; LaTeX creates a bunch of them anyway :-), since this operates “outside” the TeX run of your document, you don't have to worry about verbatim content being messed up, and you can do some other tricks which aren't possible when you need to keep braces and groups balanced. Pros and cons of each method :)
              – Phelype Oleinik
              Nov 27 at 12:48




              @i2_ I'm afraid there's no way to use docstrip without generating other source files. In fact, this is the purpose of docstrip: to generate usable TeX code from one (or more) source files. But, if you can live with the multiple files (why, not; LaTeX creates a bunch of them anyway :-), since this operates “outside” the TeX run of your document, you don't have to worry about verbatim content being messed up, and you can do some other tricks which aren't possible when you need to keep braces and groups balanced. Pros and cons of each method :)
              – Phelype Oleinik
              Nov 27 at 12:48










              up vote
              11
              down vote













              You can use the iflang package:



              documentclass{article}
              usepackage[english,ngerman]{babel}
              usepackage{iflang}
              begin{document}

              IfLanguageName{english}{This is english}{This is not english}

              IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

              selectlanguage{english}

              IfLanguageName{english}{This is english}{This not english}

              IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

              end{document}


              enter image description here






              share|improve this answer

























                up vote
                11
                down vote













                You can use the iflang package:



                documentclass{article}
                usepackage[english,ngerman]{babel}
                usepackage{iflang}
                begin{document}

                IfLanguageName{english}{This is english}{This is not english}

                IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

                selectlanguage{english}

                IfLanguageName{english}{This is english}{This not english}

                IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

                end{document}


                enter image description here






                share|improve this answer























                  up vote
                  11
                  down vote










                  up vote
                  11
                  down vote









                  You can use the iflang package:



                  documentclass{article}
                  usepackage[english,ngerman]{babel}
                  usepackage{iflang}
                  begin{document}

                  IfLanguageName{english}{This is english}{This is not english}

                  IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

                  selectlanguage{english}

                  IfLanguageName{english}{This is english}{This not english}

                  IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

                  end{document}


                  enter image description here






                  share|improve this answer












                  You can use the iflang package:



                  documentclass{article}
                  usepackage[english,ngerman]{babel}
                  usepackage{iflang}
                  begin{document}

                  IfLanguageName{english}{This is english}{This is not english}

                  IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

                  selectlanguage{english}

                  IfLanguageName{english}{This is english}{This not english}

                  IfLanguageName{ngerman}{Das ist deutsch}{Das ist nicht deutsch}

                  end{document}


                  enter image description here







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 27 at 11:07









                  Ulrike Fischer

                  183k7288664




                  183k7288664






















                      up vote
                      7
                      down vote













                      The comment package makes it easy to define arbitrary throw-away environments:



                      documentclass{article}
                      usepackage{comment}


                      % define comment sections that are either included or excluded
                      excludecomment{ENG}
                      includecomment{GER}

                      begin{document}

                      begin{ENG}
                      In the beginning was the Word, and the Word was with God, and the Word was God.
                      end{ENG}

                      begin{GER}
                      Am Anfang war das Wort und das Wort war bei Gott und Gott war das Wort.
                      end{GER}

                      end{document}


                      If one defines both environments with includecomment, both will become part of the output.



                      Technically, this comes close to the docstrip approach suggested by Phelype Oleinik as the excluded sections are actually gobbled (lexically thrown away), that is, not compiled by the tex compiler.






                      share|improve this answer

























                        up vote
                        7
                        down vote













                        The comment package makes it easy to define arbitrary throw-away environments:



                        documentclass{article}
                        usepackage{comment}


                        % define comment sections that are either included or excluded
                        excludecomment{ENG}
                        includecomment{GER}

                        begin{document}

                        begin{ENG}
                        In the beginning was the Word, and the Word was with God, and the Word was God.
                        end{ENG}

                        begin{GER}
                        Am Anfang war das Wort und das Wort war bei Gott und Gott war das Wort.
                        end{GER}

                        end{document}


                        If one defines both environments with includecomment, both will become part of the output.



                        Technically, this comes close to the docstrip approach suggested by Phelype Oleinik as the excluded sections are actually gobbled (lexically thrown away), that is, not compiled by the tex compiler.






                        share|improve this answer























                          up vote
                          7
                          down vote










                          up vote
                          7
                          down vote









                          The comment package makes it easy to define arbitrary throw-away environments:



                          documentclass{article}
                          usepackage{comment}


                          % define comment sections that are either included or excluded
                          excludecomment{ENG}
                          includecomment{GER}

                          begin{document}

                          begin{ENG}
                          In the beginning was the Word, and the Word was with God, and the Word was God.
                          end{ENG}

                          begin{GER}
                          Am Anfang war das Wort und das Wort war bei Gott und Gott war das Wort.
                          end{GER}

                          end{document}


                          If one defines both environments with includecomment, both will become part of the output.



                          Technically, this comes close to the docstrip approach suggested by Phelype Oleinik as the excluded sections are actually gobbled (lexically thrown away), that is, not compiled by the tex compiler.






                          share|improve this answer












                          The comment package makes it easy to define arbitrary throw-away environments:



                          documentclass{article}
                          usepackage{comment}


                          % define comment sections that are either included or excluded
                          excludecomment{ENG}
                          includecomment{GER}

                          begin{document}

                          begin{ENG}
                          In the beginning was the Word, and the Word was with God, and the Word was God.
                          end{ENG}

                          begin{GER}
                          Am Anfang war das Wort und das Wort war bei Gott und Gott war das Wort.
                          end{GER}

                          end{document}


                          If one defines both environments with includecomment, both will become part of the output.



                          Technically, this comes close to the docstrip approach suggested by Phelype Oleinik as the excluded sections are actually gobbled (lexically thrown away), that is, not compiled by the tex compiler.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered Nov 27 at 12:56









                          Daniel

                          29k670150




                          29k670150






















                              up vote
                              5
                              down vote













                              You can do it quite smoothly using ConTeXt, another TeX engine. It has a mode option that you can pass as an option. When compiling with mode=thismode, everything enclosed in the proper startmode[thismode] stopmode pair will be interpreted.



                              Here is a MWE



                              startmode[english]
                              language[en]
                              stopmode
                              startmode[espanol]
                              language[es]
                              stopmode

                              starttext
                              startmode[english]
                              I love you
                              stopmode
                              startmode[espanol]
                              Te quiero.
                              stopmode
                              stoptext


                              Paste this MWE in mwe.tex and compare the output of context --mode=english mwe.tex and context --mode=espanol mwe.tex. If you want to have the two texts next to another, context --mode=english,espanol mwe.tex will do it.






                              share|improve this answer























                              • Works smoothly too. Thank you :)
                                – i2_
                                Nov 27 at 11:44










                              • If you think my post was useful, please upvote it, this is the usual way to thank here. You can upvote as many answers as you want (including the one you accepted).
                                – sztruks
                                Nov 27 at 12:02















                              up vote
                              5
                              down vote













                              You can do it quite smoothly using ConTeXt, another TeX engine. It has a mode option that you can pass as an option. When compiling with mode=thismode, everything enclosed in the proper startmode[thismode] stopmode pair will be interpreted.



                              Here is a MWE



                              startmode[english]
                              language[en]
                              stopmode
                              startmode[espanol]
                              language[es]
                              stopmode

                              starttext
                              startmode[english]
                              I love you
                              stopmode
                              startmode[espanol]
                              Te quiero.
                              stopmode
                              stoptext


                              Paste this MWE in mwe.tex and compare the output of context --mode=english mwe.tex and context --mode=espanol mwe.tex. If you want to have the two texts next to another, context --mode=english,espanol mwe.tex will do it.






                              share|improve this answer























                              • Works smoothly too. Thank you :)
                                – i2_
                                Nov 27 at 11:44










                              • If you think my post was useful, please upvote it, this is the usual way to thank here. You can upvote as many answers as you want (including the one you accepted).
                                – sztruks
                                Nov 27 at 12:02













                              up vote
                              5
                              down vote










                              up vote
                              5
                              down vote









                              You can do it quite smoothly using ConTeXt, another TeX engine. It has a mode option that you can pass as an option. When compiling with mode=thismode, everything enclosed in the proper startmode[thismode] stopmode pair will be interpreted.



                              Here is a MWE



                              startmode[english]
                              language[en]
                              stopmode
                              startmode[espanol]
                              language[es]
                              stopmode

                              starttext
                              startmode[english]
                              I love you
                              stopmode
                              startmode[espanol]
                              Te quiero.
                              stopmode
                              stoptext


                              Paste this MWE in mwe.tex and compare the output of context --mode=english mwe.tex and context --mode=espanol mwe.tex. If you want to have the two texts next to another, context --mode=english,espanol mwe.tex will do it.






                              share|improve this answer














                              You can do it quite smoothly using ConTeXt, another TeX engine. It has a mode option that you can pass as an option. When compiling with mode=thismode, everything enclosed in the proper startmode[thismode] stopmode pair will be interpreted.



                              Here is a MWE



                              startmode[english]
                              language[en]
                              stopmode
                              startmode[espanol]
                              language[es]
                              stopmode

                              starttext
                              startmode[english]
                              I love you
                              stopmode
                              startmode[espanol]
                              Te quiero.
                              stopmode
                              stoptext


                              Paste this MWE in mwe.tex and compare the output of context --mode=english mwe.tex and context --mode=espanol mwe.tex. If you want to have the two texts next to another, context --mode=english,espanol mwe.tex will do it.







                              share|improve this answer














                              share|improve this answer



                              share|improve this answer








                              edited Nov 27 at 11:28

























                              answered Nov 27 at 11:18









                              sztruks

                              1,440717




                              1,440717












                              • Works smoothly too. Thank you :)
                                – i2_
                                Nov 27 at 11:44










                              • If you think my post was useful, please upvote it, this is the usual way to thank here. You can upvote as many answers as you want (including the one you accepted).
                                – sztruks
                                Nov 27 at 12:02


















                              • Works smoothly too. Thank you :)
                                – i2_
                                Nov 27 at 11:44










                              • If you think my post was useful, please upvote it, this is the usual way to thank here. You can upvote as many answers as you want (including the one you accepted).
                                – sztruks
                                Nov 27 at 12:02
















                              Works smoothly too. Thank you :)
                              – i2_
                              Nov 27 at 11:44




                              Works smoothly too. Thank you :)
                              – i2_
                              Nov 27 at 11:44












                              If you think my post was useful, please upvote it, this is the usual way to thank here. You can upvote as many answers as you want (including the one you accepted).
                              – sztruks
                              Nov 27 at 12:02




                              If you think my post was useful, please upvote it, this is the usual way to thank here. You can upvote as many answers as you want (including the one you accepted).
                              – sztruks
                              Nov 27 at 12:02










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