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Warn me when the equation number is pushed to the next line


aligning a multiline formula with the bullet of itemizeLeft aligning equations without align characterAn embarrassing Multline errorAdjusting the width of a displaymath environmentList of equations, including equation contents and captionHow to Position the Equation Number in begin{equation} environment for a parametric equation ( i.e. x = { a or b )How continue a equation next lineVertically center equation number in aligned equationAlign equations within one linemapsto and function definition / definition environment













6















Is it possible to let amsmath warn me when the equation is too long and pushes the number to the next line?



I expect either it prints Equation (1) too long to console or it makes the (1) part red.



documentclass[twocolumn]{article}

usepackage{amsmath}

begin{document}

begin{equation}
A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
end{equation}

end{document}











share|improve this question





























    6















    Is it possible to let amsmath warn me when the equation is too long and pushes the number to the next line?



    I expect either it prints Equation (1) too long to console or it makes the (1) part red.



    documentclass[twocolumn]{article}

    usepackage{amsmath}

    begin{document}

    begin{equation}
    A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
    end{equation}

    end{document}











    share|improve this question



























      6












      6








      6








      Is it possible to let amsmath warn me when the equation is too long and pushes the number to the next line?



      I expect either it prints Equation (1) too long to console or it makes the (1) part red.



      documentclass[twocolumn]{article}

      usepackage{amsmath}

      begin{document}

      begin{equation}
      A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
      end{equation}

      end{document}











      share|improve this question
















      Is it possible to let amsmath warn me when the equation is too long and pushes the number to the next line?



      I expect either it prints Equation (1) too long to console or it makes the (1) part red.



      documentclass[twocolumn]{article}

      usepackage{amsmath}

      begin{document}

      begin{equation}
      A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
      end{equation}

      end{document}








      equations amsmath






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 1 hour ago







      Symbol 1

















      asked 2 hours ago









      Symbol 1Symbol 1

      25.5k240122




      25.5k240122






















          1 Answer
          1






          active

          oldest

          votes


















          3














          I don't want to say it is impossible but it's definitely a hard problem, because amsmath relies on the eqno primitive to do this work for the equation environment.



          hsize=8cm
          $$A+B+C+D+R+F+G+H+I+J+L+M+N+O+Peqno(1)$$
          bye


          enter image description here



          So the only way I see is to override the eqno primitive and measure the penalties to see whether the number will be flushed to the next line.





          For the align family of environments it is a little easier because tag shifting is handled by macros, which you simply hook your custom error or warning into



          documentclass[twocolumn]{article}

          usepackage{amsmath}

          makeatletter
          defplace@tag{%
          iftagsleft@
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          rlap{vbox{%
          normalbaselines
          boxz@
          vbox tolineht@{}%
          raise@tag
          }}%
          else
          rlap{boxz@}%
          fi
          kerndisplaywidth@
          else
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          llap{vtop{%
          raise@tag
          normalbaselines
          setbox@nenull
          dp@nelineht@
          box@ne
          boxz@
          }}%
          else
          llap{boxz@}%
          fi
          fi
          }
          makeatother


          begin{document}

          begin{align}
          A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
          end{align}

          end{document}





          share|improve this answer


























          • Can we assume align gives the same result as equation does and throw things into align and test it? Or, test the height of vbox with and without eqno?

            – Symbol 1
            33 mins ago













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          1 Answer
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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          3














          I don't want to say it is impossible but it's definitely a hard problem, because amsmath relies on the eqno primitive to do this work for the equation environment.



          hsize=8cm
          $$A+B+C+D+R+F+G+H+I+J+L+M+N+O+Peqno(1)$$
          bye


          enter image description here



          So the only way I see is to override the eqno primitive and measure the penalties to see whether the number will be flushed to the next line.





          For the align family of environments it is a little easier because tag shifting is handled by macros, which you simply hook your custom error or warning into



          documentclass[twocolumn]{article}

          usepackage{amsmath}

          makeatletter
          defplace@tag{%
          iftagsleft@
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          rlap{vbox{%
          normalbaselines
          boxz@
          vbox tolineht@{}%
          raise@tag
          }}%
          else
          rlap{boxz@}%
          fi
          kerndisplaywidth@
          else
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          llap{vtop{%
          raise@tag
          normalbaselines
          setbox@nenull
          dp@nelineht@
          box@ne
          boxz@
          }}%
          else
          llap{boxz@}%
          fi
          fi
          }
          makeatother


          begin{document}

          begin{align}
          A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
          end{align}

          end{document}





          share|improve this answer


























          • Can we assume align gives the same result as equation does and throw things into align and test it? Or, test the height of vbox with and without eqno?

            – Symbol 1
            33 mins ago


















          3














          I don't want to say it is impossible but it's definitely a hard problem, because amsmath relies on the eqno primitive to do this work for the equation environment.



          hsize=8cm
          $$A+B+C+D+R+F+G+H+I+J+L+M+N+O+Peqno(1)$$
          bye


          enter image description here



          So the only way I see is to override the eqno primitive and measure the penalties to see whether the number will be flushed to the next line.





          For the align family of environments it is a little easier because tag shifting is handled by macros, which you simply hook your custom error or warning into



          documentclass[twocolumn]{article}

          usepackage{amsmath}

          makeatletter
          defplace@tag{%
          iftagsleft@
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          rlap{vbox{%
          normalbaselines
          boxz@
          vbox tolineht@{}%
          raise@tag
          }}%
          else
          rlap{boxz@}%
          fi
          kerndisplaywidth@
          else
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          llap{vtop{%
          raise@tag
          normalbaselines
          setbox@nenull
          dp@nelineht@
          box@ne
          boxz@
          }}%
          else
          llap{boxz@}%
          fi
          fi
          }
          makeatother


          begin{document}

          begin{align}
          A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
          end{align}

          end{document}





          share|improve this answer


























          • Can we assume align gives the same result as equation does and throw things into align and test it? Or, test the height of vbox with and without eqno?

            – Symbol 1
            33 mins ago
















          3












          3








          3







          I don't want to say it is impossible but it's definitely a hard problem, because amsmath relies on the eqno primitive to do this work for the equation environment.



          hsize=8cm
          $$A+B+C+D+R+F+G+H+I+J+L+M+N+O+Peqno(1)$$
          bye


          enter image description here



          So the only way I see is to override the eqno primitive and measure the penalties to see whether the number will be flushed to the next line.





          For the align family of environments it is a little easier because tag shifting is handled by macros, which you simply hook your custom error or warning into



          documentclass[twocolumn]{article}

          usepackage{amsmath}

          makeatletter
          defplace@tag{%
          iftagsleft@
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          rlap{vbox{%
          normalbaselines
          boxz@
          vbox tolineht@{}%
          raise@tag
          }}%
          else
          rlap{boxz@}%
          fi
          kerndisplaywidth@
          else
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          llap{vtop{%
          raise@tag
          normalbaselines
          setbox@nenull
          dp@nelineht@
          box@ne
          boxz@
          }}%
          else
          llap{boxz@}%
          fi
          fi
          }
          makeatother


          begin{document}

          begin{align}
          A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
          end{align}

          end{document}





          share|improve this answer















          I don't want to say it is impossible but it's definitely a hard problem, because amsmath relies on the eqno primitive to do this work for the equation environment.



          hsize=8cm
          $$A+B+C+D+R+F+G+H+I+J+L+M+N+O+Peqno(1)$$
          bye


          enter image description here



          So the only way I see is to override the eqno primitive and measure the penalties to see whether the number will be flushed to the next line.





          For the align family of environments it is a little easier because tag shifting is handled by macros, which you simply hook your custom error or warning into



          documentclass[twocolumn]{article}

          usepackage{amsmath}

          makeatletter
          defplace@tag{%
          iftagsleft@
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          rlap{vbox{%
          normalbaselines
          boxz@
          vbox tolineht@{}%
          raise@tag
          }}%
          else
          rlap{boxz@}%
          fi
          kerndisplaywidth@
          else
          kern-tagshift@
          if1shift@tagrow@relax
          errmessage{Equation too wide}%
          llap{vtop{%
          raise@tag
          normalbaselines
          setbox@nenull
          dp@nelineht@
          box@ne
          boxz@
          }}%
          else
          llap{boxz@}%
          fi
          fi
          }
          makeatother


          begin{document}

          begin{align}
          A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
          end{align}

          end{document}






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 42 mins ago

























          answered 50 mins ago









          Henri MenkeHenri Menke

          76.3k8167282




          76.3k8167282













          • Can we assume align gives the same result as equation does and throw things into align and test it? Or, test the height of vbox with and without eqno?

            – Symbol 1
            33 mins ago





















          • Can we assume align gives the same result as equation does and throw things into align and test it? Or, test the height of vbox with and without eqno?

            – Symbol 1
            33 mins ago



















          Can we assume align gives the same result as equation does and throw things into align and test it? Or, test the height of vbox with and without eqno?

          – Symbol 1
          33 mins ago







          Can we assume align gives the same result as equation does and throw things into align and test it? Or, test the height of vbox with and without eqno?

          – Symbol 1
          33 mins ago




















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