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

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}

edited 1 hour ago

asked 2 hours ago

Symbol 1

25.5k240122

add a comment |

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}

edited 1 hour ago

asked 2 hours ago

Symbol 1

25.5k240122

add a comment |

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}

edited 1 hour ago

asked 2 hours ago

Symbol 1

25.5k240122

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

edited 1 hour ago

asked 2 hours ago

Symbol 1

25.5k240122

edited 1 hour ago

asked 2 hours ago

Symbol 1

25.5k240122

edited 1 hour ago

asked 2 hours ago

Symbol 1

25.5k240122

asked 2 hours ago

Symbol 1

25.5k240122

asked 2 hours ago

Symbol 1

25.5k240122

add a comment |

1 Answer
1

active

oldest

votes

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}

edited 43 mins ago

answered 51 mins ago

Henri Menke

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
34 mins ago

add a comment |

Your Answer

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "85"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});

}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2ftex.stackexchange.com%2fquestions%2f479016%2fwarn-me-when-the-equation-number-is-pushed-to-the-next-line%23new-answer', 'question_page');
}
);

Post as a guest

Name

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

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}

edited 43 mins ago

answered 51 mins ago

Henri Menke

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
34 mins ago

add a comment |

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}

edited 43 mins ago

answered 51 mins ago

Henri Menke

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
34 mins ago

add a comment |

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}

edited 43 mins ago

answered 51 mins ago

Henri Menke

76.3k8167282

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}

edited 43 mins ago

answered 51 mins ago

Henri Menke

76.3k8167282

edited 43 mins ago

answered 51 mins ago

Henri Menke

76.3k8167282

answered 51 mins ago

Henri Menke

76.3k8167282

answered 51 mins ago

Henri Menke

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
34 mins ago

add a comment |

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
34 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
34 mins ago

add a comment |

draft saved

draft discarded

Thanks for contributing an answer to TeX - LaTeX Stack Exchange!

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

This page is only for reference, If you need detailed information, please check here

搜尋此網誌

Gfyuki