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Is this way of adding a horizontal line after the frame title stupid?

How to change default theme title style (bold, color, margin) of title in the beginning of each slideUnwanted space between beamer colorboxeslatex beamer appendix numberingNumerical conditional within tikz keys?Beamer: handout/article mode - produce multiple copies of a frame with distinct overlay numberstitleformat (in titlesec) doesn't show any horizontal line for chaptertwo-line frame title error in beamerLaTeX beamer: pagenumbering appendixHow beamer notices an empty line between title and subtitle?beamer full width hrule below frame title

2

I use the default beamer theme, where the defbeamertemplate*{frametitle} has:

strutinsertframetitlestrutpar%

so I ignore the par using ignorepar command in the following code:

documentclass{beamer}



newcommand{ignorepar}[3]{#2#1}

addtobeamertemplate{frametitle}{%

    letoldinsftinsertframetitle%

    renewcommand{insertframetitle}{oldinsftignoreparhrule}%

}{}



begin{document}



begin{frame}{Frametitle}{Framesubtitle}

end{frame}



end{document}

The result is:

Without ignorepar, there would be an empty line between the horizontal line and the subtitle, if it exists:

beamer rules frame-title

share|improve this question

edited 50 mins ago

LaTeX rulez

asked 3 hours ago

LaTeX rulezLaTeX rulez

113110

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  with just posting fragments it is hard to see the intent of this code or test it. What do you mean by "empty paragraph"? tex can't really have an empty paragraph. you surely need the par after thestrut (or hrule will force one anyway)
  
  – David Carlisle
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle added screenshots
  
  – LaTeX rulez
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it would be much better to add a small test file.
  
  – David Carlisle
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle done
  
  – LaTeX rulez
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  the example code doesn't produce the image shown but I assume the blank line is a paragraph that just consists of strut not really from par
  
  – David Carlisle
  3 hours ago
  

  
  
  
  

 | 
show 9 more comments

2

I use the default beamer theme, where the defbeamertemplate*{frametitle} has:

strutinsertframetitlestrutpar%

so I ignore the par using ignorepar command in the following code:

documentclass{beamer}



newcommand{ignorepar}[3]{#2#1}

addtobeamertemplate{frametitle}{%

    letoldinsftinsertframetitle%

    renewcommand{insertframetitle}{oldinsftignoreparhrule}%

}{}



begin{document}



begin{frame}{Frametitle}{Framesubtitle}

end{frame}



end{document}

The result is:

Without ignorepar, there would be an empty line between the horizontal line and the subtitle, if it exists:

beamer rules frame-title

share|improve this question

edited 50 mins ago

LaTeX rulez

asked 3 hours ago

LaTeX rulezLaTeX rulez

113110

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  with just posting fragments it is hard to see the intent of this code or test it. What do you mean by "empty paragraph"? tex can't really have an empty paragraph. you surely need the par after thestrut (or hrule will force one anyway)
  
  – David Carlisle
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle added screenshots
  
  – LaTeX rulez
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  it would be much better to add a small test file.
  
  – David Carlisle
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @DavidCarlisle done
  
  – LaTeX rulez
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  the example code doesn't produce the image shown but I assume the blank line is a paragraph that just consists of strut not really from par
  
  – David Carlisle
  3 hours ago
  

  
  
  
  

 | 
show 9 more comments

I use the default beamer theme, where the defbeamertemplate*{frametitle} has:

strutinsertframetitlestrutpar%

so I ignore the par using ignorepar command in the following code:

documentclass{beamer}



newcommand{ignorepar}[3]{#2#1}

addtobeamertemplate{frametitle}{%

    letoldinsftinsertframetitle%

    renewcommand{insertframetitle}{oldinsftignoreparhrule}%

}{}



begin{document}



begin{frame}{Frametitle}{Framesubtitle}

end{frame}



end{document}

The result is:

Without ignorepar, there would be an empty line between the horizontal line and the subtitle, if it exists:

beamer rules frame-title

share|improve this question

edited 50 mins ago

LaTeX rulez

asked 3 hours ago

LaTeX rulezLaTeX rulez

113110

strutinsertframetitlestrutpar%

documentclass{beamer}



newcommand{ignorepar}[3]{#2#1}

addtobeamertemplate{frametitle}{%

    letoldinsftinsertframetitle%

    renewcommand{insertframetitle}{oldinsftignoreparhrule}%

}{}



begin{document}



begin{frame}{Frametitle}{Framesubtitle}

end{frame}



end{document}

share|improve this question

edited 50 mins ago

LaTeX rulez

asked 3 hours ago

LaTeX rulezLaTeX rulez

113110

share|improve this question

edited 50 mins ago

LaTeX rulez

asked 3 hours ago

LaTeX rulezLaTeX rulez

113110

asked 3 hours ago

LaTeX rulezLaTeX rulez

113110

asked 3 hours ago

LaTeX rulezLaTeX rulez

113110

1 Answer
1

active

oldest

votes

2

As far as I can tell, the intent of dropping #3 in ignorepar is to generate

strutinsertframetitlestruthrule

instead of

strutinsertframetitlestrutparhrule

However the second form is preferable. hrule is a vertical mode construct so if used after the strut it is essentially an error condition from which TeX will silently recover by automatically inserting par and then re-reading the hrule token.

---

With texlive 2019 the subtitle argument is not processed at all, but using texlive 2016 you can see that the effect is not due to ignoring par you get the same output if you re-insert par (which is #3) and define the command as

newcommand{ignorepar}[3]{#2#3#1}

The important point is to do the hrule after the strutpar not before.

share|improve this answer

edited 2 hours ago

answered 3 hours ago

David CarlisleDavid Carlisle

497k4111441891

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Instead of strutinsertframetitlehrulestrutpar! The ignorepar command swaps the arguments.
  
  – LaTeX rulez
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez you make it hard to trace since you provided no usable example. hrulestrut would be bad OK you want the hrule after the strut but as I say putting it after the par would be better
  
  – David Carlisle
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez I adjusted the wording to clarify that I was just discussing the dropping of par
  
  – David Carlisle
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez sorry I rejected your edit, you removed the par from before the hrule leaving the following paragraph saying why the par is better meaningless.
  
  – David Carlisle
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But your "instead of" is wrong... If I replace y in xyz with yw, I'll get xywz, not xyzw
  
  – LaTeX rulez
  3 hours ago
  

  
  
  
  

 | 
show 3 more comments

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2

As far as I can tell, the intent of dropping #3 in ignorepar is to generate

strutinsertframetitlestruthrule

instead of

strutinsertframetitlestrutparhrule

However the second form is preferable. hrule is a vertical mode construct so if used after the strut it is essentially an error condition from which TeX will silently recover by automatically inserting par and then re-reading the hrule token.

---

With texlive 2019 the subtitle argument is not processed at all, but using texlive 2016 you can see that the effect is not due to ignoring par you get the same output if you re-insert par (which is #3) and define the command as

newcommand{ignorepar}[3]{#2#3#1}

The important point is to do the hrule after the strutpar not before.

share|improve this answer

edited 2 hours ago

answered 3 hours ago

David CarlisleDavid Carlisle

497k4111441891

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Instead of strutinsertframetitlehrulestrutpar! The ignorepar command swaps the arguments.
  
  – LaTeX rulez
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez you make it hard to trace since you provided no usable example. hrulestrut would be bad OK you want the hrule after the strut but as I say putting it after the par would be better
  
  – David Carlisle
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez I adjusted the wording to clarify that I was just discussing the dropping of par
  
  – David Carlisle
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez sorry I rejected your edit, you removed the par from before the hrule leaving the following paragraph saying why the par is better meaningless.
  
  – David Carlisle
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But your "instead of" is wrong... If I replace y in xyz with yw, I'll get xywz, not xyzw
  
  – LaTeX rulez
  3 hours ago
  

  
  
  
  

 | 
show 3 more comments

2

As far as I can tell, the intent of dropping #3 in ignorepar is to generate

strutinsertframetitlestruthrule

instead of

strutinsertframetitlestrutparhrule

However the second form is preferable. hrule is a vertical mode construct so if used after the strut it is essentially an error condition from which TeX will silently recover by automatically inserting par and then re-reading the hrule token.

---

With texlive 2019 the subtitle argument is not processed at all, but using texlive 2016 you can see that the effect is not due to ignoring par you get the same output if you re-insert par (which is #3) and define the command as

newcommand{ignorepar}[3]{#2#3#1}

The important point is to do the hrule after the strutpar not before.

share|improve this answer

edited 2 hours ago

answered 3 hours ago

David CarlisleDavid Carlisle

497k4111441891

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Instead of strutinsertframetitlehrulestrutpar! The ignorepar command swaps the arguments.
  
  – LaTeX rulez
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez you make it hard to trace since you provided no usable example. hrulestrut would be bad OK you want the hrule after the strut but as I say putting it after the par would be better
  
  – David Carlisle
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez I adjusted the wording to clarify that I was just discussing the dropping of par
  
  – David Carlisle
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @LaTeXrulez sorry I rejected your edit, you removed the par from before the hrule leaving the following paragraph saying why the par is better meaningless.
  
  – David Carlisle
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  But your "instead of" is wrong... If I replace y in xyz with yw, I'll get xywz, not xyzw
  
  – LaTeX rulez
  3 hours ago
  

  
  
  
  

 | 
show 3 more comments

As far as I can tell, the intent of dropping #3 in ignorepar is to generate

strutinsertframetitlestruthrule

instead of

strutinsertframetitlestrutparhrule

However the second form is preferable. hrule is a vertical mode construct so if used after the strut it is essentially an error condition from which TeX will silently recover by automatically inserting par and then re-reading the hrule token.

---

With texlive 2019 the subtitle argument is not processed at all, but using texlive 2016 you can see that the effect is not due to ignoring par you get the same output if you re-insert par (which is #3) and define the command as

newcommand{ignorepar}[3]{#2#3#1}

The important point is to do the hrule after the strutpar not before.

share|improve this answer

edited 2 hours ago

answered 3 hours ago

David CarlisleDavid Carlisle

497k4111441891

strutinsertframetitlestruthrule

strutinsertframetitlestrutparhrule

newcommand{ignorepar}[3]{#2#3#1}

share|improve this answer

edited 2 hours ago

answered 3 hours ago

David CarlisleDavid Carlisle

497k4111441891

answered 3 hours ago

David CarlisleDavid Carlisle

497k4111441891

answered 3 hours ago

David CarlisleDavid Carlisle

497k4111441891