deal with redirected URLs

CONTRIBUTING.md

@@ -2,7 +2,7 @@ We welcome contributions to the **tufte** package. To submit a contribution:
 
 1. [Fork](https://github.com/rstudio/tufte/fork) the repository and make your changes.
 
-2. Ensure that you have signed the [individual](http://www.rstudio.com/wp-content/uploads/2014/06/RStudioIndividualContributorAgreement.pdf) or [corporate](http://www.rstudio.com/wp-content/uploads/2014/06/RStudioCorporateContributorAgreement.pdf) contributor agreement as appropriate. You can send the signed copy to [email protected].
+2. Ensure that you have signed the [individual](https://www.rstudio.com/wp-content/uploads/2014/06/RStudioIndividualContributorAgreement.pdf) or [corporate](https://www.rstudio.com/wp-content/uploads/2014/06/RStudioCorporateContributorAgreement.pdf) contributor agreement as appropriate. You can send the signed copy to [email protected].
 
 3. Submit a [pull request](https://help.github.com/articles/using-pull-requests).
 

NEWS.md

@@ -44,7 +44,7 @@
 
 ## BUG FIXES
 
-- When `link-citations: no` in YAML, citations should not be moved into the page margin in the HTML output (http://stackoverflow.com/q/39053097/559676).
+- When `link-citations: no` in YAML, citations should not be moved into the page margin in the HTML output (https://stackoverflow.com/q/39053097/559676).
 
 - Horizontal lines could bisect margin notes and footnotes (thanks, @ajdamico, #32).
 

R/handout.R

@@ -10,7 +10,7 @@
 #'   \code{\link{html_document}} (note you cannot use the \code{template}
 #'   argument in \code{tufte_handout} or the \code{theme} argument in
 #'   \code{tufte_html()}; these arguments have been set internally)
-#' @references See \url{http://rstudio.github.io/tufte} for an example.
+#' @references See \url{https://rstudio.github.io/tufte/} for an example.
 #' @export
 #' @examples library(tufte)
 tufte_handout = function(

README.md

@@ -1,6 +1,6 @@
 # tufte
 
 [![Build Status](https://travis-ci.org/rstudio/tufte.svg)](https://travis-ci.org/rstudio/tufte)
-[![Downloads from the RStudio CRAN mirror](http://cranlogs.r-pkg.org/badges/tufte)](https://cran.r-project.org/package=tufte)
+[![Downloads from the RStudio CRAN mirror](https://cranlogs.r-pkg.org/badges/tufte)](https://cran.r-project.org/package=tufte)
 
 This R package provides a few R Markdown output formats that use the Tufte style. See https://rstudio.github.io/tufte/ for a comprehensive example. To install the development version of this package from Github, you may use `devtools::install_github('rstudio/tufte')`. You can also install it from [CRAN](https://cran.r-project.org/package=tufte) (`install.packages('tufte')`).

inst/rmarkdown/templates/tufte_html/skeleton/skeleton.Rmd

@@ -41,13 +41,13 @@ There are two goals of this package:
 1. To produce both PDF and HTML output with similar styles from the same R Markdown document;
 1. To provide simple syntax to write elements of the Tufte style such as side notes and margin figures, e.g. when you want a margin figure, all you need to do is the chunk option `fig.margin = TRUE`, and we will take care of the details for you, so you never need to think about `\begin{marginfigure} \end{marginfigure}` or `<span class="marginfigure"> </span>`; the LaTeX and HTML code under the hood may be complicated, but you never need to learn or write such code.
 
-If you have any feature requests or find bugs in **tufte**, please do not hesitate to file them to https://github.com/rstudio/tufte/issues. For general questions, you may ask them on StackOverflow: http://stackoverflow.com/tags/rmarkdown.
+If you have any feature requests or find bugs in **tufte**, please do not hesitate to file them to https://github.com/rstudio/tufte/issues. For general questions, you may ask them on StackOverflow: https://stackoverflow.com/tags/rmarkdown.
 
 # Headings
 
 This style provides first and second-level headings (that is, `#` and `##`), demonstrated in the next section. You may get unexpected output if you try to use `###` and smaller headings.
 
-`r newthought('In his later books')`^[[Beautiful Evidence](http://www.edwardtufte.com/tufte/books_be)], Tufte starts each section with a bit of vertical space, a non-indented paragraph, and sets the first few words of the sentence in small caps. To accomplish this using this style, call the `newthought()` function in **tufte** in an _inline R expression_ `` `r ` `` as demonstrated at the beginning of this paragraph.^[Note you should not assume **tufte** has been attached to your R session. You should either `library(tufte)` in your R Markdown document before you call `newthought()`, or use `tufte::newthought()`.]
+`r newthought('In his later books')`^[[Beautiful Evidence](https://www.edwardtufte.com/tufte/books_be)], Tufte starts each section with a bit of vertical space, a non-indented paragraph, and sets the first few words of the sentence in small caps. To accomplish this using this style, call the `newthought()` function in **tufte** in an _inline R expression_ `` `r ` `` as demonstrated at the beginning of this paragraph.^[Note you should not assume **tufte** has been attached to your R session. You should either `library(tufte)` in your R Markdown document before you call `newthought()`, or use `tufte::newthought()`.]
 
 # Figures
 
@@ -105,7 +105,7 @@ Any _full width_ content here.
 Below is an example:
 
 ::: {.fullwidth}
-_R is free software and comes with ABSOLUTELY NO WARRANTY._ You are welcome to redistribute it under the terms of the GNU General Public License versions 2 or 3. For more information about these matters see http://www.gnu.org/licenses/.
+_R is free software and comes with ABSOLUTELY NO WARRANTY._ You are welcome to redistribute it under the terms of the GNU General Public License versions 2 or 3. For more information about these matters see https://www.gnu.org/licenses/.
 :::
 
 ## Main Column Figures
@@ -124,7 +124,7 @@ If you'd like to place ancillary information in the margin without the sidenote
 
 # References
 
-References can be displayed as margin notes for HTML output. For example, we can cite R here [@R-base]. To enable this feature, you must set `link-citations: yes` in the YAML metadata, and the version of `pandoc-citeproc` should be at least 0.7.2. You can always install your own version of Pandoc from http://pandoc.org/installing.html if the version is not sufficient. To check the version of `pandoc-citeproc` in your system, you may run this in R:
+References can be displayed as margin notes for HTML output. For example, we can cite R here [@R-base]. To enable this feature, you must set `link-citations: yes` in the YAML metadata, and the version of `pandoc-citeproc` should be at least 0.7.2. You can always install your own version of Pandoc from https://pandoc.org/installing.html if the version is not sufficient. To check the version of `pandoc-citeproc` in your system, you may run this in R:
 
 ```{r eval=FALSE}
 system2('pandoc-citeproc', '--version')
@@ -250,7 +250,7 @@ output:
     css: "my_style.css"
 ```
 
-There is also a variant of the Tufte style in HTML/CSS named "[Envisoned CSS](http://nogginfuel.com/envisioned-css/)". This style can be used by specifying the argument `tufte_variant = 'envisioned'` in `tufte_html()`^[The actual Envisioned CSS was not used in the **tufte** package. We only changed the fonts, background color, and text color based on the default Tufte style.], e.g.
+There is also a variant of the Tufte style in HTML/CSS named "[Envisoned CSS](https://github.com/nogginfuel/envisioned-css)". This style can be used by specifying the argument `tufte_variant = 'envisioned'` in `tufte_html()`^[The actual Envisioned CSS was not used in the **tufte** package. We only changed the fonts, background color, and text color based on the default Tufte style.], e.g.
 
 ```yaml
 output:
@@ -268,7 +268,7 @@ file.edit(
 )
 ```
 
-This document is also available in [Chinese](http://rstudio.github.io/tufte/cn/), and its `envisioned` style can be found [here](http://rstudio.github.io/tufte/envisioned/).
+This document is also available in [Chinese](https://rstudio.github.io/tufte/cn/), and its `envisioned` style can be found [here](https://rstudio.github.io/tufte/envisioned/).
 
 ```{r bib, include=FALSE}
 # create a bib file for the R packages used in this document