Non-breaking space in citet using natbib?












18















When adding citations in the body of a document I'm used to write



... in some interesting paper~cite{interesting}.


So that (if I'm using numbered references) the word “paper” and the citation number stick together and do not accidentally end up in two different lines.



It seems, however, that the citet command from natbib (which should produce something like “Authors [4]”), does not use a ~ between the names of the authors and the citation number so that, on a few rare occasions, I end up with something like



                                                  ... Authors
[4].


Which is annoying. Is there an easy way to make natbib use a non-breaking space there?










share|improve this question





























    18















    When adding citations in the body of a document I'm used to write



    ... in some interesting paper~cite{interesting}.


    So that (if I'm using numbered references) the word “paper” and the citation number stick together and do not accidentally end up in two different lines.



    It seems, however, that the citet command from natbib (which should produce something like “Authors [4]”), does not use a ~ between the names of the authors and the citation number so that, on a few rare occasions, I end up with something like



                                                      ... Authors
    [4].


    Which is annoying. Is there an easy way to make natbib use a non-breaking space there?










    share|improve this question



























      18












      18








      18


      2






      When adding citations in the body of a document I'm used to write



      ... in some interesting paper~cite{interesting}.


      So that (if I'm using numbered references) the word “paper” and the citation number stick together and do not accidentally end up in two different lines.



      It seems, however, that the citet command from natbib (which should produce something like “Authors [4]”), does not use a ~ between the names of the authors and the citation number so that, on a few rare occasions, I end up with something like



                                                        ... Authors
      [4].


      Which is annoying. Is there an easy way to make natbib use a non-breaking space there?










      share|improve this question
















      When adding citations in the body of a document I'm used to write



      ... in some interesting paper~cite{interesting}.


      So that (if I'm using numbered references) the word “paper” and the citation number stick together and do not accidentally end up in two different lines.



      It seems, however, that the citet command from natbib (which should produce something like “Authors [4]”), does not use a ~ between the names of the authors and the citation number so that, on a few rare occasions, I end up with something like



                                                        ... Authors
      [4].


      Which is annoying. Is there an easy way to make natbib use a non-breaking space there?







      spacing line-breaking natbib






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Aug 5 '11 at 15:34









      lockstep

      193k53593723




      193k53593723










      asked Oct 25 '10 at 14:40









      Juan A. NavarroJuan A. Navarro

      36.7k27116163




      36.7k27116163






















          3 Answers
          3






          active

          oldest

          votes


















          11














          Looks like NAT@spacechar needs to be redefined:



          documentclass{article}

          usepackage[numbers]{natbib}

          makeatletter
          % defNAT@spacechar{ }% OLD
          defNAT@spacechar{~}% NEW
          makeatother

          usepackage{filecontents}

          begin{filecontents}{jobname.bib}
          @misc{a01,
          author = {Author, A.},
          year = {2001},
          title = {Alpha},
          }
          end{filecontents}

          begin{document}

          Let's test if author and citation number end up in different lines: citet{a01}.

          bibliographystyle{plainnat}
          bibliography{jobname}

          end{document}





          share|improve this answer
























          • Thanks! It does the trick. I wonder why this isn't the default behavior of natbib or, at least, there is an option to more easily set this.

            – Juan A. Navarro
            Oct 25 '10 at 15:49






          • 1





            I guess the default behavior was chosen with author-year-citations in mind, where allowing a line break between author and year is acceptable.

            – lockstep
            Oct 25 '10 at 15:58






          • 2





            Hey! I realize this is an almost 4 year old question, but I just tried to solve exactly the same line-breaking citet{} problem, and trying your suggestion did not make any difference. (I inserted the re-definition in the document preamble). Do you have any idea why that might be, or what I might try?

            – penelope
            Jun 24 '14 at 12:48



















          6














          Since NAT@spacechar is used, this redefinition prevents such breaks:



          makeatletter
          renewcommand*{NAT@spacechar}{~}
          makeatother


          This could affect also places where a break could be desired. Thus, an easy way for your rare occasions would be to use just mbox around the citation:



          ... in the paper mbox{citet{interesting}}.





          share|improve this answer



















          • 1





            Also thanks for the suggestion. However note that the mbox wont always produce the desired result if the author name contains several words (or there are several authors), as there is nothing wrong with breaking the line between those names.

            – Juan A. Navarro
            Oct 25 '10 at 15:52











          • Stefans suggestion will also prevent hyphenation of author names.

            – lockstep
            Oct 25 '10 at 15:55











          • @Juan @lockstep: that's right! It's just intended to fix the line breaking for such occasions like in the question, where the author isn't hyphenated. Of course, such adjustment should be done at last, when the final version is being produced. This local correction avoids the global effect of changing NAT@spacechar to be unbreakable.

            – Stefan Kottwitz
            Oct 25 '10 at 16:37





















          2














          lockstep and Stefan Kottwitz suggest redefining NAT@spacechar. That may have worked at one time, but I find that it no longer works now, seven years later, using natbib 2010/09/13 8.31b (PWD, AO) from TeXLive 2016. A comment from @penelope also mentions that this approach was no longer working as of mid-2014.



          The following strategy does work for me as of now. Add the following to your document preamble somewhere after usepackage{natbib}:



          bibpunct{nolinebreak{}[}{]}{,}{n}{}{,}


          The key piece of this is the nolinebreak{}[, which discourages LaTeX from breaking a line before the [ that starts a group of bracketed citation numbers. The remaining arguments to bibpunct merely replicate the standard punctuation for bracketed, numbered citations.



          Note that the {} immediately after nolinebreak is not really an empty argument to nolinebreak. Rather, it simply prevents nolinebreak from mistaking the following [ for the start of an optional argument. That being said, nolinebreak does accept an optional argument that determines how strongly a break should be discouraged. So you could instead use something like bibpunct{nolinebreak[0][}{]}{,}{n}{}{,} to make the no-break directive merely a mild request, all the way up to bibpunct{nolinebreak[4][}{]}{,}{n}{}{,} for a strict demand. The latter is equivalent to the default treatment you get if you use the bibpunct{nolinebreak{}[}{]}{,}{n}{}{,} form I suggested initially.






          share|improve this answer


























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            3 Answers
            3






            active

            oldest

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            3 Answers
            3






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            11














            Looks like NAT@spacechar needs to be redefined:



            documentclass{article}

            usepackage[numbers]{natbib}

            makeatletter
            % defNAT@spacechar{ }% OLD
            defNAT@spacechar{~}% NEW
            makeatother

            usepackage{filecontents}

            begin{filecontents}{jobname.bib}
            @misc{a01,
            author = {Author, A.},
            year = {2001},
            title = {Alpha},
            }
            end{filecontents}

            begin{document}

            Let's test if author and citation number end up in different lines: citet{a01}.

            bibliographystyle{plainnat}
            bibliography{jobname}

            end{document}





            share|improve this answer
























            • Thanks! It does the trick. I wonder why this isn't the default behavior of natbib or, at least, there is an option to more easily set this.

              – Juan A. Navarro
              Oct 25 '10 at 15:49






            • 1





              I guess the default behavior was chosen with author-year-citations in mind, where allowing a line break between author and year is acceptable.

              – lockstep
              Oct 25 '10 at 15:58






            • 2





              Hey! I realize this is an almost 4 year old question, but I just tried to solve exactly the same line-breaking citet{} problem, and trying your suggestion did not make any difference. (I inserted the re-definition in the document preamble). Do you have any idea why that might be, or what I might try?

              – penelope
              Jun 24 '14 at 12:48
















            11














            Looks like NAT@spacechar needs to be redefined:



            documentclass{article}

            usepackage[numbers]{natbib}

            makeatletter
            % defNAT@spacechar{ }% OLD
            defNAT@spacechar{~}% NEW
            makeatother

            usepackage{filecontents}

            begin{filecontents}{jobname.bib}
            @misc{a01,
            author = {Author, A.},
            year = {2001},
            title = {Alpha},
            }
            end{filecontents}

            begin{document}

            Let's test if author and citation number end up in different lines: citet{a01}.

            bibliographystyle{plainnat}
            bibliography{jobname}

            end{document}





            share|improve this answer
























            • Thanks! It does the trick. I wonder why this isn't the default behavior of natbib or, at least, there is an option to more easily set this.

              – Juan A. Navarro
              Oct 25 '10 at 15:49






            • 1





              I guess the default behavior was chosen with author-year-citations in mind, where allowing a line break between author and year is acceptable.

              – lockstep
              Oct 25 '10 at 15:58






            • 2





              Hey! I realize this is an almost 4 year old question, but I just tried to solve exactly the same line-breaking citet{} problem, and trying your suggestion did not make any difference. (I inserted the re-definition in the document preamble). Do you have any idea why that might be, or what I might try?

              – penelope
              Jun 24 '14 at 12:48














            11












            11








            11







            Looks like NAT@spacechar needs to be redefined:



            documentclass{article}

            usepackage[numbers]{natbib}

            makeatletter
            % defNAT@spacechar{ }% OLD
            defNAT@spacechar{~}% NEW
            makeatother

            usepackage{filecontents}

            begin{filecontents}{jobname.bib}
            @misc{a01,
            author = {Author, A.},
            year = {2001},
            title = {Alpha},
            }
            end{filecontents}

            begin{document}

            Let's test if author and citation number end up in different lines: citet{a01}.

            bibliographystyle{plainnat}
            bibliography{jobname}

            end{document}





            share|improve this answer













            Looks like NAT@spacechar needs to be redefined:



            documentclass{article}

            usepackage[numbers]{natbib}

            makeatletter
            % defNAT@spacechar{ }% OLD
            defNAT@spacechar{~}% NEW
            makeatother

            usepackage{filecontents}

            begin{filecontents}{jobname.bib}
            @misc{a01,
            author = {Author, A.},
            year = {2001},
            title = {Alpha},
            }
            end{filecontents}

            begin{document}

            Let's test if author and citation number end up in different lines: citet{a01}.

            bibliographystyle{plainnat}
            bibliography{jobname}

            end{document}






            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Oct 25 '10 at 15:40









            locksteplockstep

            193k53593723




            193k53593723













            • Thanks! It does the trick. I wonder why this isn't the default behavior of natbib or, at least, there is an option to more easily set this.

              – Juan A. Navarro
              Oct 25 '10 at 15:49






            • 1





              I guess the default behavior was chosen with author-year-citations in mind, where allowing a line break between author and year is acceptable.

              – lockstep
              Oct 25 '10 at 15:58






            • 2





              Hey! I realize this is an almost 4 year old question, but I just tried to solve exactly the same line-breaking citet{} problem, and trying your suggestion did not make any difference. (I inserted the re-definition in the document preamble). Do you have any idea why that might be, or what I might try?

              – penelope
              Jun 24 '14 at 12:48



















            • Thanks! It does the trick. I wonder why this isn't the default behavior of natbib or, at least, there is an option to more easily set this.

              – Juan A. Navarro
              Oct 25 '10 at 15:49






            • 1





              I guess the default behavior was chosen with author-year-citations in mind, where allowing a line break between author and year is acceptable.

              – lockstep
              Oct 25 '10 at 15:58






            • 2





              Hey! I realize this is an almost 4 year old question, but I just tried to solve exactly the same line-breaking citet{} problem, and trying your suggestion did not make any difference. (I inserted the re-definition in the document preamble). Do you have any idea why that might be, or what I might try?

              – penelope
              Jun 24 '14 at 12:48

















            Thanks! It does the trick. I wonder why this isn't the default behavior of natbib or, at least, there is an option to more easily set this.

            – Juan A. Navarro
            Oct 25 '10 at 15:49





            Thanks! It does the trick. I wonder why this isn't the default behavior of natbib or, at least, there is an option to more easily set this.

            – Juan A. Navarro
            Oct 25 '10 at 15:49




            1




            1





            I guess the default behavior was chosen with author-year-citations in mind, where allowing a line break between author and year is acceptable.

            – lockstep
            Oct 25 '10 at 15:58





            I guess the default behavior was chosen with author-year-citations in mind, where allowing a line break between author and year is acceptable.

            – lockstep
            Oct 25 '10 at 15:58




            2




            2





            Hey! I realize this is an almost 4 year old question, but I just tried to solve exactly the same line-breaking citet{} problem, and trying your suggestion did not make any difference. (I inserted the re-definition in the document preamble). Do you have any idea why that might be, or what I might try?

            – penelope
            Jun 24 '14 at 12:48





            Hey! I realize this is an almost 4 year old question, but I just tried to solve exactly the same line-breaking citet{} problem, and trying your suggestion did not make any difference. (I inserted the re-definition in the document preamble). Do you have any idea why that might be, or what I might try?

            – penelope
            Jun 24 '14 at 12:48











            6














            Since NAT@spacechar is used, this redefinition prevents such breaks:



            makeatletter
            renewcommand*{NAT@spacechar}{~}
            makeatother


            This could affect also places where a break could be desired. Thus, an easy way for your rare occasions would be to use just mbox around the citation:



            ... in the paper mbox{citet{interesting}}.





            share|improve this answer



















            • 1





              Also thanks for the suggestion. However note that the mbox wont always produce the desired result if the author name contains several words (or there are several authors), as there is nothing wrong with breaking the line between those names.

              – Juan A. Navarro
              Oct 25 '10 at 15:52











            • Stefans suggestion will also prevent hyphenation of author names.

              – lockstep
              Oct 25 '10 at 15:55











            • @Juan @lockstep: that's right! It's just intended to fix the line breaking for such occasions like in the question, where the author isn't hyphenated. Of course, such adjustment should be done at last, when the final version is being produced. This local correction avoids the global effect of changing NAT@spacechar to be unbreakable.

              – Stefan Kottwitz
              Oct 25 '10 at 16:37


















            6














            Since NAT@spacechar is used, this redefinition prevents such breaks:



            makeatletter
            renewcommand*{NAT@spacechar}{~}
            makeatother


            This could affect also places where a break could be desired. Thus, an easy way for your rare occasions would be to use just mbox around the citation:



            ... in the paper mbox{citet{interesting}}.





            share|improve this answer



















            • 1





              Also thanks for the suggestion. However note that the mbox wont always produce the desired result if the author name contains several words (or there are several authors), as there is nothing wrong with breaking the line between those names.

              – Juan A. Navarro
              Oct 25 '10 at 15:52











            • Stefans suggestion will also prevent hyphenation of author names.

              – lockstep
              Oct 25 '10 at 15:55











            • @Juan @lockstep: that's right! It's just intended to fix the line breaking for such occasions like in the question, where the author isn't hyphenated. Of course, such adjustment should be done at last, when the final version is being produced. This local correction avoids the global effect of changing NAT@spacechar to be unbreakable.

              – Stefan Kottwitz
              Oct 25 '10 at 16:37
















            6












            6








            6







            Since NAT@spacechar is used, this redefinition prevents such breaks:



            makeatletter
            renewcommand*{NAT@spacechar}{~}
            makeatother


            This could affect also places where a break could be desired. Thus, an easy way for your rare occasions would be to use just mbox around the citation:



            ... in the paper mbox{citet{interesting}}.





            share|improve this answer













            Since NAT@spacechar is used, this redefinition prevents such breaks:



            makeatletter
            renewcommand*{NAT@spacechar}{~}
            makeatother


            This could affect also places where a break could be desired. Thus, an easy way for your rare occasions would be to use just mbox around the citation:



            ... in the paper mbox{citet{interesting}}.






            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Oct 25 '10 at 15:49









            Stefan KottwitzStefan Kottwitz

            179k65573762




            179k65573762








            • 1





              Also thanks for the suggestion. However note that the mbox wont always produce the desired result if the author name contains several words (or there are several authors), as there is nothing wrong with breaking the line between those names.

              – Juan A. Navarro
              Oct 25 '10 at 15:52











            • Stefans suggestion will also prevent hyphenation of author names.

              – lockstep
              Oct 25 '10 at 15:55











            • @Juan @lockstep: that's right! It's just intended to fix the line breaking for such occasions like in the question, where the author isn't hyphenated. Of course, such adjustment should be done at last, when the final version is being produced. This local correction avoids the global effect of changing NAT@spacechar to be unbreakable.

              – Stefan Kottwitz
              Oct 25 '10 at 16:37
















            • 1





              Also thanks for the suggestion. However note that the mbox wont always produce the desired result if the author name contains several words (or there are several authors), as there is nothing wrong with breaking the line between those names.

              – Juan A. Navarro
              Oct 25 '10 at 15:52











            • Stefans suggestion will also prevent hyphenation of author names.

              – lockstep
              Oct 25 '10 at 15:55











            • @Juan @lockstep: that's right! It's just intended to fix the line breaking for such occasions like in the question, where the author isn't hyphenated. Of course, such adjustment should be done at last, when the final version is being produced. This local correction avoids the global effect of changing NAT@spacechar to be unbreakable.

              – Stefan Kottwitz
              Oct 25 '10 at 16:37










            1




            1





            Also thanks for the suggestion. However note that the mbox wont always produce the desired result if the author name contains several words (or there are several authors), as there is nothing wrong with breaking the line between those names.

            – Juan A. Navarro
            Oct 25 '10 at 15:52





            Also thanks for the suggestion. However note that the mbox wont always produce the desired result if the author name contains several words (or there are several authors), as there is nothing wrong with breaking the line between those names.

            – Juan A. Navarro
            Oct 25 '10 at 15:52













            Stefans suggestion will also prevent hyphenation of author names.

            – lockstep
            Oct 25 '10 at 15:55





            Stefans suggestion will also prevent hyphenation of author names.

            – lockstep
            Oct 25 '10 at 15:55













            @Juan @lockstep: that's right! It's just intended to fix the line breaking for such occasions like in the question, where the author isn't hyphenated. Of course, such adjustment should be done at last, when the final version is being produced. This local correction avoids the global effect of changing NAT@spacechar to be unbreakable.

            – Stefan Kottwitz
            Oct 25 '10 at 16:37







            @Juan @lockstep: that's right! It's just intended to fix the line breaking for such occasions like in the question, where the author isn't hyphenated. Of course, such adjustment should be done at last, when the final version is being produced. This local correction avoids the global effect of changing NAT@spacechar to be unbreakable.

            – Stefan Kottwitz
            Oct 25 '10 at 16:37













            2














            lockstep and Stefan Kottwitz suggest redefining NAT@spacechar. That may have worked at one time, but I find that it no longer works now, seven years later, using natbib 2010/09/13 8.31b (PWD, AO) from TeXLive 2016. A comment from @penelope also mentions that this approach was no longer working as of mid-2014.



            The following strategy does work for me as of now. Add the following to your document preamble somewhere after usepackage{natbib}:



            bibpunct{nolinebreak{}[}{]}{,}{n}{}{,}


            The key piece of this is the nolinebreak{}[, which discourages LaTeX from breaking a line before the [ that starts a group of bracketed citation numbers. The remaining arguments to bibpunct merely replicate the standard punctuation for bracketed, numbered citations.



            Note that the {} immediately after nolinebreak is not really an empty argument to nolinebreak. Rather, it simply prevents nolinebreak from mistaking the following [ for the start of an optional argument. That being said, nolinebreak does accept an optional argument that determines how strongly a break should be discouraged. So you could instead use something like bibpunct{nolinebreak[0][}{]}{,}{n}{}{,} to make the no-break directive merely a mild request, all the way up to bibpunct{nolinebreak[4][}{]}{,}{n}{}{,} for a strict demand. The latter is equivalent to the default treatment you get if you use the bibpunct{nolinebreak{}[}{]}{,}{n}{}{,} form I suggested initially.






            share|improve this answer






























              2














              lockstep and Stefan Kottwitz suggest redefining NAT@spacechar. That may have worked at one time, but I find that it no longer works now, seven years later, using natbib 2010/09/13 8.31b (PWD, AO) from TeXLive 2016. A comment from @penelope also mentions that this approach was no longer working as of mid-2014.



              The following strategy does work for me as of now. Add the following to your document preamble somewhere after usepackage{natbib}:



              bibpunct{nolinebreak{}[}{]}{,}{n}{}{,}


              The key piece of this is the nolinebreak{}[, which discourages LaTeX from breaking a line before the [ that starts a group of bracketed citation numbers. The remaining arguments to bibpunct merely replicate the standard punctuation for bracketed, numbered citations.



              Note that the {} immediately after nolinebreak is not really an empty argument to nolinebreak. Rather, it simply prevents nolinebreak from mistaking the following [ for the start of an optional argument. That being said, nolinebreak does accept an optional argument that determines how strongly a break should be discouraged. So you could instead use something like bibpunct{nolinebreak[0][}{]}{,}{n}{}{,} to make the no-break directive merely a mild request, all the way up to bibpunct{nolinebreak[4][}{]}{,}{n}{}{,} for a strict demand. The latter is equivalent to the default treatment you get if you use the bibpunct{nolinebreak{}[}{]}{,}{n}{}{,} form I suggested initially.






              share|improve this answer




























                2












                2








                2







                lockstep and Stefan Kottwitz suggest redefining NAT@spacechar. That may have worked at one time, but I find that it no longer works now, seven years later, using natbib 2010/09/13 8.31b (PWD, AO) from TeXLive 2016. A comment from @penelope also mentions that this approach was no longer working as of mid-2014.



                The following strategy does work for me as of now. Add the following to your document preamble somewhere after usepackage{natbib}:



                bibpunct{nolinebreak{}[}{]}{,}{n}{}{,}


                The key piece of this is the nolinebreak{}[, which discourages LaTeX from breaking a line before the [ that starts a group of bracketed citation numbers. The remaining arguments to bibpunct merely replicate the standard punctuation for bracketed, numbered citations.



                Note that the {} immediately after nolinebreak is not really an empty argument to nolinebreak. Rather, it simply prevents nolinebreak from mistaking the following [ for the start of an optional argument. That being said, nolinebreak does accept an optional argument that determines how strongly a break should be discouraged. So you could instead use something like bibpunct{nolinebreak[0][}{]}{,}{n}{}{,} to make the no-break directive merely a mild request, all the way up to bibpunct{nolinebreak[4][}{]}{,}{n}{}{,} for a strict demand. The latter is equivalent to the default treatment you get if you use the bibpunct{nolinebreak{}[}{]}{,}{n}{}{,} form I suggested initially.






                share|improve this answer















                lockstep and Stefan Kottwitz suggest redefining NAT@spacechar. That may have worked at one time, but I find that it no longer works now, seven years later, using natbib 2010/09/13 8.31b (PWD, AO) from TeXLive 2016. A comment from @penelope also mentions that this approach was no longer working as of mid-2014.



                The following strategy does work for me as of now. Add the following to your document preamble somewhere after usepackage{natbib}:



                bibpunct{nolinebreak{}[}{]}{,}{n}{}{,}


                The key piece of this is the nolinebreak{}[, which discourages LaTeX from breaking a line before the [ that starts a group of bracketed citation numbers. The remaining arguments to bibpunct merely replicate the standard punctuation for bracketed, numbered citations.



                Note that the {} immediately after nolinebreak is not really an empty argument to nolinebreak. Rather, it simply prevents nolinebreak from mistaking the following [ for the start of an optional argument. That being said, nolinebreak does accept an optional argument that determines how strongly a break should be discouraged. So you could instead use something like bibpunct{nolinebreak[0][}{]}{,}{n}{}{,} to make the no-break directive merely a mild request, all the way up to bibpunct{nolinebreak[4][}{]}{,}{n}{}{,} for a strict demand. The latter is equivalent to the default treatment you get if you use the bibpunct{nolinebreak{}[}{]}{,}{n}{}{,} form I suggested initially.







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited 44 mins ago

























                answered Apr 15 '17 at 22:21









                Ben LiblitBen Liblit

                973816




                973816






























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