RMarkdown can't keep authors in separate lines

[bobtao]

I have mutiple authors with different affiliations. I am not able to keep them in separate lines. Also see warning message shown at end of this posting.
I actually had it workign file before I upgraded to R3.6.2 with tinytex_0.20 rmarkdown_2.1 .

Any help is appreciated.

the code in Rmd file:

################

title: Summary Report
author:

• "John Doe, Mike Mistery, Nance Mistery, Sam Excellent"
• "North America Explorer Team"
• "Christie Outstanding, Jon Goodfellow"
• "North America New Development"
  date: "r format(Sys.time(), '%B %d, %Y')"
  header-includes:
• \usepackage{titling}
• \pretitle{\begin{center}\LARGE\includegraphics[width=8cm]{blue_sky.png}\[\bigskipamount]}
• \posttitle{\end{center}}
• \usepackage{fancyhdr}
• \usepackage{xcolor}
• \pagestyle{fancy}
• \rhead{\includegraphics[width = .05\textwidth]{blue_sky.png}}
• \fancyfoot[CO,CE]{X Company Confidential}
• \fancyfoot[LE,RO]{\thepage}
• \fancypagestyle{plain}{\pagestyle{fancy}}
  output:
  pdf_document:
  toc: true

---

################

the output in PDF:

################
test1.pdf (311.1 KB)
################

I also see
Warning message:
Package Fancyhdr Warning: \fancyfoot's E' option without twoside option is use less on input line 109. Package Fancyhdr Warning: \fancyfoot's E' option without twoside option is use
less on input line 110.
Package Fancyhdr Warning: \headheight is too small (12.0pt):
Make it at least 23.6612pt.
We now make it that large for the rest of the document.
This may cause the page layout to be inconsistent, however.

[cderv]

This discussion here:

default template does not work with multiple authors

The default latex template is now the one from Pandoc directly and it does put the authors with an \and. See the template.

If you want multiple author differently organized, I think you need to provide your own template. There is also a trick to change the meaning of the \and latex command in the discussion on GH.

[bobtao]

Thanks @cderv !

I am not familar with pdf code and not sure how to change template. Looks like I need to downgrading RMarkdown.

[cderv]

@bobtao

I am not familar with pdf code and not sure how to change template. Looks like I need to downgrading RMarkdown.

If you downgrade, you may encounter other issue. You can try the trick I posted on the GH issue

---
title: "R Markdown v2 Demo"
author:
  - John
  - Joe
date: "2015/01/01"
output: pdf_document
header-includes: 
  - \renewcommand{\and}{\\}
---

Hello world.

Could work for you if you don't use the \and command elsewhere than in author.

[bobtao]

Excellent, That solved my problem!
Glad I have not downgraded RMarkdown as I am concerned it may cause other issues.

Thanks so much!

[cderv]

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