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

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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 beginequation 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

usepackageamsmath

begindocument

 beginequation
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endequation

enddocument

equations amsmath

share|improve this question

edited 1 hour ago

Symbol 1

asked 2 hours ago

Symbol 1Symbol 1

25.5k240122

add a comment | 

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

usepackageamsmath

begindocument

 beginequation
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endequation

enddocument

equations amsmath

share|improve this question

edited 1 hour ago

Symbol 1

asked 2 hours ago

Symbol 1Symbol 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

usepackageamsmath

begindocument

 beginequation
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endequation

enddocument

equations amsmath

share|improve this question

edited 1 hour ago

Symbol 1

asked 2 hours ago

Symbol 1Symbol 1

25.5k240122

documentclass[twocolumn]article

usepackageamsmath

begindocument

 beginequation
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endequation

enddocument

share|improve this question

edited 1 hour ago

Symbol 1

asked 2 hours ago

Symbol 1Symbol 1

25.5k240122

share|improve this question

edited 1 hour ago

Symbol 1

asked 2 hours ago

Symbol 1Symbol 1

25.5k240122

asked 2 hours ago

Symbol 1Symbol 1

25.5k240122

asked 2 hours ago

Symbol 1Symbol 1

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

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

usepackageamsmath

makeatletter
defplace@tag%
 iftagsleft@
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 rlapvbox%
 normalbaselines
 boxz@
 vbox tolineht@%
 raise@tag
 %
 else
 rlapboxz@%
 fi
 kerndisplaywidth@
 else
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 llapvtop%
 raise@tag
 normalbaselines
 setbox@nenull
 dp@nelineht@
 box@ne
 boxz@
 %
 else
 llapboxz@%
 fi
 fi

makeatother


begindocument

 beginalign
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endalign

enddocument

share|improve this answer

edited 1 hour ago

answered 1 hour ago

Henri MenkeHenri 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
  1 hour ago
  
  

  
  
  
  

add a comment | 

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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

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

usepackageamsmath

makeatletter
defplace@tag%
 iftagsleft@
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 rlapvbox%
 normalbaselines
 boxz@
 vbox tolineht@%
 raise@tag
 %
 else
 rlapboxz@%
 fi
 kerndisplaywidth@
 else
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 llapvtop%
 raise@tag
 normalbaselines
 setbox@nenull
 dp@nelineht@
 box@ne
 boxz@
 %
 else
 llapboxz@%
 fi
 fi

makeatother


begindocument

 beginalign
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endalign

enddocument

share|improve this answer

edited 1 hour ago

answered 1 hour ago

Henri MenkeHenri 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
  1 hour ago
  
  

  
  
  
  

add a comment | 

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

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

usepackageamsmath

makeatletter
defplace@tag%
 iftagsleft@
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 rlapvbox%
 normalbaselines
 boxz@
 vbox tolineht@%
 raise@tag
 %
 else
 rlapboxz@%
 fi
 kerndisplaywidth@
 else
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 llapvtop%
 raise@tag
 normalbaselines
 setbox@nenull
 dp@nelineht@
 box@ne
 boxz@
 %
 else
 llapboxz@%
 fi
 fi

makeatother


begindocument

 beginalign
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endalign

enddocument

share|improve this answer

edited 1 hour ago

answered 1 hour ago

Henri MenkeHenri 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
  1 hour 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

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

usepackageamsmath

makeatletter
defplace@tag%
 iftagsleft@
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 rlapvbox%
 normalbaselines
 boxz@
 vbox tolineht@%
 raise@tag
 %
 else
 rlapboxz@%
 fi
 kerndisplaywidth@
 else
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 llapvtop%
 raise@tag
 normalbaselines
 setbox@nenull
 dp@nelineht@
 box@ne
 boxz@
 %
 else
 llapboxz@%
 fi
 fi

makeatother


begindocument

 beginalign
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endalign

enddocument

share|improve this answer

edited 1 hour ago

answered 1 hour ago

Henri MenkeHenri Menke

76.3k8167282

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

documentclass[twocolumn]article

usepackageamsmath

makeatletter
defplace@tag%
 iftagsleft@
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 rlapvbox%
 normalbaselines
 boxz@
 vbox tolineht@%
 raise@tag
 %
 else
 rlapboxz@%
 fi
 kerndisplaywidth@
 else
 kern-tagshift@
 if1shift@tagrow@relax
 errmessageEquation too wide%
 llapvtop%
 raise@tag
 normalbaselines
 setbox@nenull
 dp@nelineht@
 box@ne
 boxz@
 %
 else
 llapboxz@%
 fi
 fi

makeatother


begindocument

 beginalign
 A+B+C+D+R+F+G+H+I+J+L+M+N+O+P
 endalign

enddocument

share|improve this answer

edited 1 hour ago

answered 1 hour ago

Henri MenkeHenri Menke

76.3k8167282

answered 1 hour ago

Henri MenkeHenri Menke

76.3k8167282

answered 1 hour ago

Henri MenkeHenri Menke

76.3k8167282