Creating a footer for every page (including first!) using R markdown

Question

I'd like to add to the question Creating a footer for every page using R markdown: how do I do this for the first page of the document in addition to all the following pages?

In RStudio, this code:

---
title: "Test"
author: "Author Name"
header-includes:
- \usepackage{fancyhdr}
- \usepackage{lipsum}
- \pagestyle{fancy}
- \fancyhead[CO,CE]{This is fancy header}
- \fancyfoot[CO,CE]{And this is a fancy footer}
- \fancyfoot[LE,RO]{\thepage}
output: pdf_document
---
\lipsum[1-30]

Produces this at the bottom of pg1:

and this (oddly, shouldn't this go on the left because of the \fancyfoot[LE,RO]{\thepage}?) at the bottom of pg2:

and this at the bottom of pg3:

Solution

Use

---
title: "Test"
author: "Author Name"
header-includes:
- \usepackage{fancyhdr}
- \usepackage{lipsum}
- \pagestyle{fancy}
- \fancyhead[CO,CE]{This is fancy header}
- \fancyfoot[CO,CE]{And this is a fancy footer}
- \fancyfoot[LE,RO]{\thepage}
- \fancypagestyle{plain}{\pagestyle{fancy}}
output: pdf_document
---
\lipsum[1-30]

which should override the plain page style - used on the first page with an issue of \maketitle - to be equivalent to fancy.

Remark that \fancypagestyle{plain}{} has the same effect as \fancypagestyle{plain}{\pagestyle{fancy}}.