pandoc_convert() will throw an error if Pandoc is
not available (thanks, @brianperdomo, #2600).
Use the argument --syntax-highlighting=none for
Pandoc >= 3.8 since --no-highlight has been deprecated
(#2602).
Dropped the temporary workaround that used to support syntax
highlighting of |> and =>. The
workaround has no longer been necessary since Pandoc 2.18,
which was released more than 3 years ago (#2290).
convert_ipynb() no longer drops raw cells with no
format in metadata (thanks, @katrinabrock, #2587).
Fixed a bug that prevents render() from working when
converting .md input to PDF (thanks, @mrainers, #2599).
find_external_resources() now correctly detects
knitr child document provided with option like
child = c("child.Rmd") (thanks, @rempsyc, #2574).
knit_params_ask() uses a select input
for parameters which allow multiple selected values. Previously, a
radio input was incorrectly used when the parameter had a
small number of choices.
params:
primaries:
choices: ["red", "yellow", "blue"]
multiple: trueWhen multiple is not enabled, parameter configuration
still uses radio when there are fewer than five
choices.
The input parameter field can still be used to force the
configuration control.
params:
grade:
input: radio
choices: ["A", "B", "C", "D", "F"]Add classes odd, even, and
header back to table rows for Pandoc >= 3.2.1, so tables
can be styled properly (thanks, @therealgenna, #2567).
beamer_presentation support handling latex
dependencies via the new extra_dependencies argument and
declarations within chunks (e.g.,
knitr::asis_output("", meta = list(rmarkdown::latex_dependency("longtable"))))
(thanks, @cderv, @atusy, #2478).
Provide a global option rmarkdown.files.suffix to
configure the suffix of the directory for auxiliary files (thanks, @certara-tzweers,
#2550). By default, this suffix is _files, which can cause
HTML output files to be deleted automatically on Microsoft OneDrive or
Google Drive. If that is the case for you, you may set a different
suffix in your .Rprofile, e.g.,
options(rmarkdown.files.suffix = "_rmdfiles").
Fix a regression in 2.26 regarding image paths post-processing in
html_document_base(). Now absolute paths to image in the
output directory (output_dir) are correctly made relative
to the output directory again.
rmarkdown now requires knitr >= 1.43.
Get rid of the superfluous warning in find_pandoc()
(thanks, @jszhao,
#2527).
Removed the stringr dependency since it is used only once in the package and the equivalent base R code is simple enough (thanks, @etiennebacher, #2530).
For the output format option fig_crop: auto, it will
now use the same logic as in knitr to decide if
cropping is possible (yihui/knitr#2246).
Avoid corrupting input files by accident (thanks, @J-Moravec, #2534).
Fixed a bug that filenames beginning with - cause
incorrect invocation of Pandoc (thanks, @mbaynton, #2503).
Documented how to merge output_format_dependency()
to the output format (thanks, @atusy, #2508).
ioslides_presentation() now correctly works with new
shiny 1.7.5 (thanks, @nicolasgaraycoa, #2514, @gadenbuie,
#2516).
Added a new argument metadata to the
pre_knit function in output_format() so that
users will have access to the YAML metadata of the input document before
knitting it (#2485). Please note that if you define
pre_knit for a custom output format, you are strongly
recommended to leave a ... argument in
pre_knit, so we (rmarkdown package
authors) are free to add more arguments to pre_knit without
breaking your code. If your pre_knit function does not have
the ... argument, you will get a warning.
Fixed file_scope being lost when extending output
formats that considers the file_scope using
output_format(). Merge behavior is to apply overlay
file_scope function onto the result of
base_format’s file_scope function. This
implies that file_scope gains second argument which
receives the returned values of the base file_scope
(thanks, @atusy,
#2488).
Added output_format_dependency() which allows
extending output format from within chunks (thanks, @atusy, #2462)
Fix an issue with shiny prerendered document where dependencies context were written twice leasing to parsing error (thanks, @gadenbuie, rstudio/learn#597, #2500).
find_external_resources() works with formats
defining there own theme argument, like
cleanrmd::html_document_clean(), not related to
bslib supports (thanks, @gadenbuie, #2493,
r-lib/pkgdown#2319).
Fixed version number comparison problems as requested by CRAN.
Using css with .scss and
.sass file, or with a bslib theme, now works as expected
with a shiny runtime (thanks, @cpsievert, #2443, #2447).
Add a pandoc_metadata_file_arg() function to match
Pandoc’s CLI flag --metadata-file.
Mentions that webshot or
webshot2 is required to take screenshot of HTML widget.
When not installed, an error message mentioning
always_allow_html: true solution will be shown, but setting
this is not the solution (quarto-dev/quarto-cli#4225).
html_dependency_jqueryui() updated to 1.13.2 from
version bundled in shiny (thanks, @daschnerm, #2477).
Fix an issue with YAML header ending with a commented line containing incomplete yaml (thanks, @keithnewman, #2483).
When code folding is enabled in html_document(), the
text on the button to show the content has been changed from “Code” to
“Show”, because the content to show is not necessarily code, e.g.,
yihui/knitr#2227.
Now HTML output formats use the Font Awesome HTML dependency from the fontawesome package instead of shipping an outdated version of Font Awesome in rmarkdown (thanks, @rich-iannone, #2451).
Fixed a bug caused by a change in the is_blank()
function in xfun 0.38 (thanks, @andreahgsin, #2469).
The defunct tufte_handout() has been removed from
rmarkdown. Please use
tufte::tufte_handout() instead.
If an input path to rmarkdown::render() is a
symbolic link, it is no longer resolved to its real path (thanks, @SamDM @jmw86069, #1508).
Make sure to avoid creating invalid paths when copying resources (thanks, @mnazarov, #2429).
Make sure logo is properly embedded in
ioslides_presentation() when
self_contained = TRUE (thanks, @mnazarov, #2428).
xfun::isFALSE() internally.rmarkdown::render() argument
output_file is now used for all output formats, if there is
only one name for multiple output formats (thanks, @MaelAstruc,
#2421).
Custom output formats can provide a custom function to convert
Markdown input to the desired output format now. To do so, define the
output format via
output_format(pandoc = pandoc_options(convert_fun = function(...) {})).
The default converting function is pandoc_convert() in this
package. See the help page ?pandoc_options for more
details.
rmarkdown::render_site() will now also look for
index.rmd in addition to index.Rmd for custom
site generator in YAML with site: (thanks, @kamalsacranie,
#2409).
Icons in tabset dropdown are now correctly shown, including when
self_contained: false (thanks, @cpsievert, #1697).
Pandoc 2.19 has deprecated the argument
--self-contained. If you have installed Pandoc 2.19+,
rmarkdown will use
--embed-resources --standalone as recommended by Pandoc for
output formats that use the option self_contained = TRUE
(#2382).
pandoc_version() returns a version number of the
form X.Y.Z.YYYY.MM.DD for the nightly build of Pandoc now,
where YYYY.MM.DD is its build date. Previously it would
return X.Y.Z.9999 to indicate the nightly version.
Fix navbar issue with website when using Boostrap 5 with bslib (thanks, @guasi, #2379, @cpsievert, #2384).
The tufte_handout() function inside
rmarkdown is defunct now. Its codebase was moved to the
tufte package in 2016, and this function was marked as
deprecated in 2021. Please use tufte::tufte_handout()
instead of rmarkdown::tufte_handout(). The latter will be
removed eventually from this package.
github_document() gains
math_method = "default" and defaults to it. No special
processing will be done to inline maths in $ and block
maths in $$ as now Github
supports it and will render using Mathjax (thanks, @kylebutts,
#2361).
Improved highlighting theme arrow regarding
accessibility.
Fixed an issue with site_generator() detection of a
site project (thanks, @bhattmaulik, #2344).
Fixed an issue with Shiny prerendered documents and Pandoc not correctly rendering last Markdown paragraph in HTML (thanks, @gadenbuie, #2336).
Fixed a bug that site_generator() fails to detect
the root dir of the site and causes infinite recursion (thanks, @fisher-j,
#2339).
html_vignette() gains code_folding
argument (thanks, @atusy, #2340).
html_document() can opt-out
code_folding = "show" or "hide" for individual
code blocks by adding the fold-none class to the code
blocks (thanks, @atusy,
#2348).
When using a development version of Pandoc, a .9999
suffix is appended to version number so that
pandoc_available() can correctly compared version with last
release.
Fix an issue with older R version and vignette building (#2324).
Fix an issue with older R version and
preserve_yaml = TRUE in md_document()
(#2325).
Long title in ioslides_presentation failed to work
with Pandoc 2.17.x (thanks, @Am386DX-40, #2327).
html_document() and
html_document_base() gains the math_method
argument to support all the
math rendering engines from Pandoc: “mathjax”, “katex”, “mathml”,
“webtex”, and “gladtex”. For backward compatibility, the
mathjax argument still works and will take precedence over
math_method, but we recommend using the new
math_method argument instead of the mathjax
argument, and the latter could be deprecated in the future.
You can specify a math engine via math_method as an
engine name, e.g.,
output:
html_document:
math_method: katexor provide both a name and a URL (for mathjax,
katex and webtex):
output:
html_document:
math_method:
engine: mathjax
url: https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml-full.jsFor math_method = "katex", KaTeX CDN will be inserted in
version 0.15.2 by default (from jsdelivr). A custom URL toward another
CDN can be passed as url.
For math_method = "webtex", it will default to inset SVG
using https://latex.codecogs.com/svg.image?. Use
https://latex.codecogs.com/png.image? for PNG. See
https://latex.codecogs.com for supported options (dpi, background,
…).
Most HTML output format using html_document() or
html_document_base() as based format should benefit from
this new feature. See ?rmarkdown::html_document() for
details (thanks, @atusy, #1940).
github_document() also gains the
math_method argument set to "webtex" by
default so that LaTeX equations can be rendered in the Github Markdown
document as images. Previously, LaTeX equations were not rendered. Set
math_method = NULL to deactivate.
Added support for katex R
package as a math engine with math_method = "r-katex" in
HTML documents. This method offers server-side rendering of all the
equations, which means no JS processing is needed in the browser as with
usual KaTeX or MathJaX methods. (thanks, @jeroen, #2304).
anchor_sections can now be easily customized using
style or depth element for
anchor_sections. For example:
output:
html_document:
anchor_sections:
style: symbol # use symbol style ("hash", "symbol", "icon")
depth: 2 # max depth to apply anchor on (default to max which is 6)Customizing using a CSS rule is still possible. Detailed explanation
and examples have been added to the help page
?html_document.
Improved the highlighting mechanism in formats that supports
highlight argument:
.theme
in highlight argument for customizing the syntax
highlighting style used by Pandoc.highlight: arrow a theme optimized for accessibility and
color contrast (thanks to @apreshill), and
highlight: rstudio to mimic the RStudio editor theme.html_document() for R syntax highlighting and autolinking.
Use highlight_downlit = TRUE to activate it (same argument
as in distill). This features require the
downlit package.Templates for html_document() and
ioslides_presentation() gained a new CSS rule to display
single line <summary> content inline
(rstudio/rstudio#10589).
md_document() gained a new standalone
argument, which is FALSE by default unless
toc = TRUE. This allows to output authors, date and other
metadata per the Pandoc’s template. Due to limitation in how Pandoc is
handling metadata blocks in its extensions
yaml_metadata_block, preserve_yaml = TRUE now
deactivate any extension to let rmarkdown directly
handle the keeping of YAML block - this means it does not set
standalone = TRUE by default. Meanwhile,
github_document() gained the preserve_yaml
argument (thanks, @florisvdh, #2297).
Added available_templates() to list all the
templates from a specific package that can be used with
rmarkdown::draft().
Following support in Pandoc 2.15,
powerpoint_presentation() gained a incremental
argument as other slide formats. As a reminder, setting
incremental = TRUE will make lists to display
incrementally. See more in Pandoc’s
MANUAL.
Added support for Pandoc’s dir variable in HTML
templates. This is the second Language
Variables after lang.
Added a global option
rmarkdown.html_dependency.header_attr (TRUE by
default). It can be set to FALSE to opt-out the HTML
dependency html_dependency_header_attrs() in documents
based on html_document_base() (thanks, @salim-b
rstudio/bookdown#865, @maelle r-lib/downlit#1538).
Rendering using runtime: shiny_prerendered or
runtime: shinyrmd now natively supports custom templates.
Previously since 2.8, developers had to add a special comment,
<!-- HEAD_CONTENT -->, conditionally to
shiny-prerendered variable. (See also NEWS from 2.8 for the
previous behavior). The new behavior inserts required special comment
<!-- HEAD_CONTENT --> as a last element of
$header-includes$. If templates rely on the old behavior
and require some contents between $header-includes$ and
<!-- HEAD_CONTENT -->, consider including them with
$header-includes$ (thanks, @atusy, @gadenbuie #2249).
A shiny prerendered document with only a empty server context
does not error anymore. Document will be rendered with a empty server
function and server.R file will be ignored. To use
server.R, no server context should be present in the Rmd
document (thanks, @jcheng5, #2305).
Fixed a regression with rendering shiny_prerendered
document (thanks, @aronatkins, @gadenbuie, #2218).
Fixed an issue in beamer_presentation() where
header-includes would be overwritten by
includes = list(in_header =) (thanks, @samcarter, #2294). Same
fix as for pdf_document() (#1359).
Fixed broken links to section headers when
number_sections = TRUE is specified in
md_document and github_document (thanks, @atusy, #2093).
draft() now works with
devtools::load_all() and testthat when
used in other packages.
Lua Filters: Added two more functions in shared.lua
for other package to use:
type() function backward compatible following
Pandoc 2.17 changes.print_debug() for easier logging during
debug.Add opt-in tabset option to the
html_vignette. In contrast to the similar feature from
html_document, this feature supports navigation from ToC
and URL. Any custom formats can introduce this feature by using an
exported function html_dependency_tabset() (thanks, @atusy, #2313).
Relative paths in parent directories in the css
argument of html_document() were incorrectly normalized to
absolute paths by #2095 in v2.8. Now relative paths in parent
directories will no longer be converted to absolute paths (thanks, @daijiang,
yihui/xaringan#331).
It is possible to specify the version of jQuery via a global
option now, e.g., options(rmarkdown.jquery.version = 2)
(note that the default major version is 3). This is mainly
for advanced users and developers to test different versions of
jQuery.
pandoc_citeproc_convert() now handles correctly bib
file containing specific UTF-8 characters on non default UTF-8 systems
like Windows (thanks, @mitchelloharawild,
#2195).
Shiny prerendered documents are now pre-rendered in a child environment to avoid allowing the results of static code chunks to exist in the Shiny app environment (@gadenbuie, #2203).
The previously unexported function convert_ipynb()
is exported now (thanks, @acircleda).
md_document() will now handle correctly
preserve_yaml value for all variants and all pandoc
versions (#2190).
preserve_yaml = TRUE, markdown output will keep
the YAML metadata block from the Rmd file.preserve_yaml = FALSE, markdown output will have
no YAML metadata block.This fixes a breaking change in Pandoc 2.13 regarding
gfm, commonmark and commonmark_x
which now supports yaml_metadata_block by default
(#2118).
New supported syntax for Shiny prerendered documents: you can now
use server: shiny or
server: type: shiny.
Ability to inject additional functions into Shiny prerendered server scope using the “server-extras” context.
Fixed the syntax highlighting issue with R’s pipe operator
|> (thanks, @edzer, rstudio/bookdown#1157).
Fix a regression in version 2.8 when a url is used in
css argument (thanks, @vnijs, #2163).
All HTML dependencies are now correctly supported, included those
with only an href component but not file
component in their src attribute. Previously,
rmarkdown would throw the error
'path for html_dependency not provided' when rendering
documents containing HTML dependencies with href components
(thanks, @crazycapivara, @matthewstrasiotto, #1805, #1948,
#2151).
Fix an error thrown with output format using a
file_scope function (like in bookdown)
(thanks, @rfaelens,
#2149).
Fix an issue with copy_ressource = TRUE in
html_document_base where very long HTML documents were
truncated during post processing (thanks, @oliviermeslin, #2145).
When run()-ing a runtime: shiny
document, an extra temp folder will be used in the output path. With the
extra temp random folder in the path, predictable output file names may
be used. (#2137)
When run()-ing a runtime: shiny
document with a {bslib} theme, the global theme value
wasn’t being restored properly. (#2160)
Floating ToC in html_document can now hide headings
with unnumbered and unlisted classes (thanks, @atusy, #1993).
Fix prefix handling in R Markdown website’s navbar for
Fontawesome V5 and compatibility with V4. For icon only available in V5,
the full prefix + name should be use, especially with new
fab prefix (e.g. fab fa-r-project). If no
prefix is used (e.g fa-home instead of
fas fa-home), the fa prefix will be added for
V4 compatibility as it has been deprecated in V5. We advice to use the
full prefix + name for icons following Fontawesome documentation.
(#1994)
rmarkdown::site_generator() can hang session waiting
for input when the site field is not found in the YAML
frontmatter of index.Rmd (thanks, @kevinushey @mirh, #2043).
Fix a issue with Pandoc 2.5 and latex-div.lua -
documents can now be rendered as expected without error (thanks, @davidwales,
#2121).
Fix an issue with styling and code folding button behavior when
default is code-folding: show. The Button can now be
correctly style according to state as aria-expanded
attributes is correctly updated. Also, new classes has been added on the
button to allow styling during transition: btn-collapsing
and btn-expanding are respectively applied during
transition Show to Hide and Hide to Show. (This follow Bootstrap
behavior for the collapsible block) (thanks, @steveharoz, #2085).
Fix an issue with citation_package having no effect
when using .md file as input to render() with
latex and PDF output formats (thanks, @andrewheiss, #2113).
A new internal option rmarkdown.knit.ext has been
added to control the extension of the intermediary knit output during a
rendering. It defaults to md to produce
*.knit.md. Only useful for very advanced usage
(#2098).
render() won’t produce any *.utf8.md
intermediary file anymore. This was a leftover from previous versions of
rmarkdown. Since knitr 1.24 and
rmarkdown 2.0, only UTF-8 input files are allowed.
(#2098).
Fix an Invalid cross-device link error when
tempdir() is used for intermediates_dir in
render() (thanks, @gorgitko, #2096).
Fix a regression in HTML default template with floating toc incorrectly placed on small size window (thanks, @grimbough, #2071)
Provided a runtime: shiny fix for output formats
that pass a modified bslib::bs_theme() object to
html_document_base()’s theme (thanks, @cpsievert,
#2049).
Rendering using runtime: shiny_prerendered or
runtime: shinyrmd will now produce valid HTML by not
inserting anymore the full document as body in the resulting shiny apps
(thanks, @dakep,
#1912). Header content usually containing html dependencies will be
inserted in the HTML document at the end of the head before
</head>, unless the rendered HTML contains
<!-- HEAD_CONTENT --> special comment (see
htmltools::renderDocument()). A new Pandoc variable is set
in for shiny prerendered document to allow conditional insertion of such
content in the the HTML template using
$if(shiny-prerendered)$. This has been done in all HTML
template in this package. Users of custom template should make this
change to provide support for this runtime. See
rmarkdown default template (default.html)
for an example (#2064).
Added tectonic as a supported LaTeX engine for
generating PDF output (thanks, @dpryan79, #2078). You can specify to use
this by adding engine: "tectonic" to your output format in
YAML, such as pdf_document.
When no output_format is provided in any way but an
output_file is provided in render(), the
default format will be determined based on the extension:
"pdf_document" for .pdf, or
"word_document" for .docx. Otherwise, it will
be "html_document" as previous version (thanks, @pearsonca,
#1569).
Added a new global option rmarkdown.render.message.
When set FALSE, render() will not output the
message starting by Output created: allowing RStudio IDE to
open a preview of the document. This is useful for package developers
that would need to emit there own output message for there custom
format. See ?render_site for more info on this special
message (#2092).
Internal changes regarding Lua filters. They have now an explicit
Pandoc version minimal requirement: A filter will be skipped with a
warning printed by the Lua filter if this requirement is not met. For
now, all filters work for Pandoc 2.1 and above (thanks, @atusy, #2088). There is also
now a new mechanism to have a share Lua filter script loadable by other
Lua files: render() will set the
RMARKDOWN_LUA_SHARED env var to the path of Lua filter
shared.lua so that other filters can access functions
defined in it using
dofile(os.getenv 'RMARKDOWN_LUA_SHARED'). This is for
internal usage only to avoid duplication (thanks, @tarleb, #2103).
html_document_base gains a css
argument, to which html_document’s css
argument is now passed. This also fix an issue when .sass
or .scss files are used with this css argument
when self_contained: FALSE. Moreover, sass
caching mechanism can now be used when passing .sass or
.scss files to the css argument (thanks, @cpsievert,
#2095).
The fig_crop option of PDF document formats (such as
pdf_document and beamer_presentation) supports
the value "auto" now, which means
fig_crop = TRUE when figure cropping tools
pdfcrop and ghostscript are
available.
The default value of the fig_crop option of PDF
output formats has been changed from TRUE to
"auto" (#2077).
rmarkdown::tufte_handout has been deprecated and
will be removed in the future from this package. It has been moved to
the tufte package since rmarkdown
0.9.5 (released on 2016-02-22). Please use
tufte::tufte_handout instead.
html_document (and
html_document_base)’s theme parameter now
understands bslib::bs_theme() objects/arguments, meaning
that one may opt-into Bootstrap 4 and more easily create custom themes.
For examples, see https://github.com/rstudio/rmarkdown/pull/1706, and for
context, see https://rstudio.github.io/bslib/ (thanks, @cpsievert,
#1706).
Files with .scss/.sass extension (i.e.,
Sass files) provided to html_document’s css
parameter are now compiled to CSS using the {sass} package.
Also, if theme is a {bslib} object, these Sass
files may utilize Sass code inside the theme (thanks, @cpsievert,
#1706).
Fix an issue with line numbering in code chunks when
.numberlines with Pandoc’s highlighting (thanks, @aosavi, #1876).
Fix an issue with shiny runtime and global.R
(thanks, @liaojiahui-r,
rstudio/flexdashboard#298).
Accept latex="{options}", latex=1, or
latex=true for Latex Divs.
Add output_format_filter function to
default_site_generator(). Enables custom site generators to
customize or even entirely replace the output format right before
rendering of each page.
Automatically exclude renv directory for
render_site() (thanks, @jmbuhr, #1996)
Do not force options(htmltools.preserve.raw = TRUE)
when this option has been set, otherwise it is impossible for other
packages to turn this option off, e.g., yihui/xaringan#293.
knitr_options_pdf() will now throw a warning when
fig_crop = TRUE but is disabled because required tools
pdfcrop and/or ghostscript are missing
(thanks, @netique,
#2016).
Eliminated the unnecessary padding in code blocks in the
html_document output with Bootstrap 4 themes (thanks, @atusy, #2019).
github_document() will produce a working TOC even if
some headers start with number (#2039).
Fix an issue with knit_print.data.frame. The
... arguments are no more passed to print() to
avoid passing knit_print() arguments options
and encoding to custom print() methods
(#2047).
Encoding is correctly handled now in html_vignette
when checking for identical title and vignette index entry (thanks,
@py-b, #1978).
clean_site() now default to
preview = TRUE and will no more remove files without
notice. This change will affect the “Clean All” button in the “Build”
pane for website project. clean_site(preview = FALSE) must
be run to effectively remove files (#1973).
The intermediate .tex file is now correctly deleted
if keep_tex = FALSE when the R Markdown document is not
rendered from the working directory (thanks, @vqv, #1308).
Fix a bug causing certain resources files to be deleted as
intermediate files when intermediates_dir is the same as
the input (thanks, @bellma-lilly, #1248).
Fix issues with anchor_sections = TRUE and
learnr (thanks, @gadenbuie, #1938).
Enable use of server.R and global.R
alongside runtime: shinyrmd documents.
pkg_file_lua() now works with
devtools::load_all() and testthat when
used in other packages.
Fix pandoc_convert(citeproc = TRUE) not supressing
the --natbib or --biblatex options (thanks,
@atusy,
#1932).
pandoc-citeproc is now activated if a
bibliography field is defined in another YAML block instead
of the first YAML block (thanks, @bwiernik, #1364).
Specify that htmltools::htmlPreserve() should use
the pandoc raw attribute rather than preservation tokens when pandoc
>= v2.0. Note that this option will have the intended effect only for
versions of htmltools >= 0.5.0.9003.
anchor_sections in html_documents() now
defaults to FALSE. It was introduced in previous version
with a default to TRUE, but it is reverted now after
hearing feedbacks from the community (thank you!). The # is
still used as the character for the anchor but you can easily change
that using CSS rules. Examples have been added to the help page
?html_document.
Using Pandoc’s default for --email-obfuscation now.
Previously, it was set to none explicitly, which is the
default for Pandoc 1.17.2+ anyway. Only users with a Pandoc version
before 1.17.2 may see a change in the content of the html source file
produced if the document contains email addresses. This change allows to
pass the Pandoc’s command line flag if you want to set it to another
value (thanks,@seankross, #1969).
output:
html_document:
pandoc_args: ["--email-obfuscation", "javascript"]See Pandoc’s manual for the meaning of this option.
Fix Fontawesome 5 icons in navbar by correctly handling new
prefix as fa has been deprecated in favor of
fas or fab (#1967)
Tables without header rows (wich can be possible in Pandoc’s simple
table) are now formatted correctly when using
html_document() format (thanks, @fkohrt, #1893).
html_document() gains the
anchor_sections argument, which is TRUE by
default, so that readers can get links to section headers easily—when
you mouse over a section header, you will see a hash symbol
# at the end of the header, which contains the anchor link
to this header. You can click on this link and get the URL in the addres
bar of your web browser, or right-click on it and copy the URL from the
context menu. The hash symbol is defined by the CSS rule
a.anchor-section::before {content: '#';}. You can customize
it by overriding this rule (e.g., via the css argument of
html_document) and use any other symbols or icons, e.g.,
content: "\02AD8;" (thanks, @atusy, #1884).
pkg_file_lua() should have thrown an error if the
expected Lua file does not exist.
Provide files_dir and intermediates_dir
as attributes on return from render() when
run_pandoc = FALSE.
Supports new Pandoc 2.11 --citeproc flags usage
instead of pandoc-citeproc external filter.
pandoc_convert() and pandoc_citeproc_convert()
will now use the correct flags according to the Pandoc version used. The
logic is exported in pandoc_citeproc_args(). See Pandoc release
note for more information about the new citeproc
processing (#1916).
Fixed the code highlighting when code block is hidden. Previous
version introduced a regression where non default code highlighting was
still shown when code_folding is activated and code block
is hidden (thanks, @matthewcarlucci, #1921).
The minimal required version for the xfun package (v0.15) has been specified for R Markdown Notebooks to work properly (thanks, @jmcphers, #1923).
Fixed a bug in convert_ipynb() when the language is
not specified in the .ipynb file (thanks, @acca3003,
#1925).
Introduce runtime: shinyrmd as a more user friendly
alias for runtime: shiny_prerendered.
Lua filters handling has been improved internally with some user-facing changes (#1899):
pandoc_lua_filter_args() to
return the Pandoc command-line argument to add a Lua filter.lua_filters in
pandoc_options() to pass the Lua filter paths to use with a
format. This allow output format authors to add filters for a custom
format using the pandoc argument of
output_format() and to get filters from a format using
fmt$pandoc$lua_filters.render(). By default, they are passed to Pandoc before any
other format-defined or user-defined Pandoc arguments (usually via the
pandoc_args option of an output format). This ensures that
filters of an output format are executed first. To change the default,
you need to deal with it in a custom format (i.e., modify the elements
in fmt$pandoc$lua_filters, such as reordering them).pkg_file_lua() to get the full
system path of a Lua filter included in a package source within the
inst/rmarkdown/lua folder (thanks, @atusy, #1903).Fixed the path separators for the css parameter in
YAML frontmatter for HTML output files under Windows. Previously,
forward slashes in css paths were converted to backslashes
(thanks, @jonathan-g, #1862).
Since rmarkdown 1.16, Pandoc’s fenced
Div’s are converted to LaTeX environments when the output
format is LaTeX, e.g., ::: {.center data-latex=""} is
converted to \begin{center}. The attribute
data-latex of the Div was mandatory, even if
it is empty. In rmarkdown 2.2, we silently drop this
requirement, which means ::: {.center} is converted to
\begin{center}. This turns out to be a bad idea, because
users have no control over which Div’s to be converted to LaTeX
environments. Previously, they could opt-in by the
data-latex attribute, but with rmarkdown
2.3, all Div’s are converted to LaTeX environments unconditionally.
What’s more, this change led to bugs like
https://stackoverflow.com/q/62340425/559676 and
https://github.com/rstudio/bookdown/issues/883. Therefore the
data-latex attribute became mandatory again in this
version. If the LaTeX environment does not need arguments, you may use
data-latex="".
The two Lua fitlers pagebreak.lua and
latex-div.lua (introduced in rmarkdown
1.16) are also applied to the output format
beamer_presentation now (thanks, @XiangyunHuang, #1815).
When customizing formats with the output_format
function, pre_knit, opts_hooks, and
knit_hooks can now refer to
rmarkdown::metadata. Previously,
rmarkdown::metadata returned list() in these
functions (thanks, @atusy, #1855).
rmarkdown::find_external_resources() now discovers
external template files. This in turn fixes the rendering issue of
html_document with the shiny runtime and
intermediate_dir set (thanks, @atusy, @cderv, #1865).
Added the number_sections argument to following
formats: github_document,
ioslides_presentation, md_document,
odt_document, powerpoint_presentation,
rtf_document, slidy_presentation,
word_document. These are powered by a Lua filter and
requires Pandoc > 2.0. It will silently have no effect has before
with previous pandoc version (thanks @atusy 1893). Pandoc >= 2.10.1 adds
--number-sections for docx format, and thus
word_document prefers the native feature to the Lua filter
(thanks, @jooyoungseo, #1869).
For the output format pdf_document, the option
fig_crop will not be enabled unless both the programs
pdfcrop and ghostscript are found (thanks,
@dalupus,
yihui/knitr#954).
Fixed a bug that a chunk with a class fold-hide
hides the rest of the chunks even the output format setting
html_document(code_folding = "show") (thanks, @atusy, #1906).
Updated documentation for render() to make it
clearer how options are set for the output_format parameter
(thanks, @jonathan-g, #1907 and
rstudio/bookdown#930).
Ported some CSS styles (e.g., underlines, small caps, and multi-column layouts) from the latest Pandoc’s HTML template into rmarkdowns HTML templates (thanks, @atusy, #1878, #1908).
Addressed an accessibility issue in highlighted code blocks of HTML output for screen reader users: screen readers no longer read out an unnecessary code line id values (thanks, @jooyoungseo and @atusy, #1833).
Added file_scope option to output format definition.
This enables handling of duplicate numeric footnote identifiers
(e.g. across bookdown chapters) via the pandoc --file-scope
option (#1837).
Added the customizable lang attribute to
ioslides_presentation output (thanks, @jooyoungseo,
#1841).
Added publish_site() function for “one-button”
publishing of R Markdown websites.
When the df_print option is kable and
the output format is not HTML,
<div class="kable-table"> is no longer added to the
kable() output, because recent versions of Pandoc will
convert the div to a LaTeX environment when the output
format is LaTeX (thanks, Laurens,
https://stackoverflow.com/q/62340425/559676).
html_vignette() only warns against differences in
the vignette title and the vignette index entry for R >= 3.6.0
(thanks, @krlmlr,
#1832).
html_document() can apply code_folding
on any chunk engines if the foldable class is added to a
source code block via the chunk options (class.source or
attr.source). You may apply this feature to all the source
code blocks, for example, by setting
knitr::opts_chunk$set(class.source = "foldable") at the
beginning of your document (thanks, @atusy, #1835).
Exported the internal function find_pandoc(), and
also added two arguments, dir and version, so
that users can provide a custom directory under which this function may
find Pandoc, as well as an expected version of Pandoc to be found
(thanks, @connorp,
#1785).
pandoc_metadata_arg() is a new Pandoc helper
function to generate --metadata argument for Pandoc command
line (thanks, @cderv,
#1789).
The output format html_vignette() now warns against
differences in the vignette title specified in the title
field in the YAML metadata and the one specified inside
\VignetteIndexEntry{}. Normally they are expected to be
identical (#1789).
Fixed a bug with encoding when rendering
html_notebook containing HTML widgets (thanks, @cderv, #1799).
TOC title can now be specified for html_document via
the top-level option toc-title in the YAML frontmatter
(thanks, @atusy,
#1771).
Floating TOC can now distinguish upper/lower-cases (thanks, @atusy, #1783).
When code_folding='show' for the output format
html_document, code blocks can be individually hidden
initially by specifying the chunk option
class.source='fold-hide' (thanks, @atusy, #1798).
For LaTeX/PDF output formats pdf_document,
beamer_presentation, and context_document, the
argument citation_package = 'none' was deprecated, and
citation_package = 'default' should be used instead if
citations are to be processed by pandoc-citeproc (thanks,
@njbart,
rstudio/bookdown#754).
output_format() can now inherit keep_md
and clean_supporting from base_format when
NULL is passed to these arguments. Previously, you must
explicitly specify keep_md and/or
clean_supporting as TRUE or FALSE
in output_format() since they could not inherit the
corresponding options of base_format. This behavior was not
consisent with other arguments of output_format() (thanks,
@atusy,
#1823).
The smart argument of most output formats has been
removed, because Pandoc’s smart extension is enabled by
default, and setting smart: false for an output format did
not really have any effect (which could be considered a bug, but we want
to get rid of this option since it existed only for a historical reason
for Pandoc 1.x, and Pandoc 2.x has been released for more than two
years). If you want to disable the smart extension, you can
use the option md_extensions: -smart of the output format
(thanks, @atusy,
#1774).
pdf_document() should not specify the
geometry variable when the documentclass
variable is passed to Pandoc (thanks, @jpcirrus, #1782).
render() now respects the YAML metadata in the R
script when rendering the script with Pandoc 2.8 or later (thanks, @nsoranzo #1740, @cderv #1741).
For pandoc_convert(), when the argument
to = 'pdf', it will be changed to 'latex'
internally (thanks, @JohannesFriedrich,
#1802).
render(run_pandoc = FALSE) no longer cleans up the
Markdown file (typically knitted from Rmd) (thanks, @BrianDiggs,
#1812).
Added the returned output from shiny::runApp()
within rmarkdown::run() (thanks, @schloerke, #1760).
YAML header is now correctly parsed in
html_notebook’s intermediate .knit.md file so
that features like adding bibliography works again (thanks, @everdark, @cderv, #1747).
ioslides_presentation template no longer generates
an empty <h2> tag when subtitle is not
specified in YAML (thanks, @jooyoungseo #1735, @cgrudz #1663).
No longer center the #header element in the
html_vignette() output (thanks, @EmilHvitfeldt, #1742).
Ensure the tempdir() exists (via
tempdir(TRUE)) when writing HTML dependencies to a
temporary file, because this directory might be erased by accident
(thanks, Kurt Hornik, and also @karawoo #1743).
Added the slide_level argument to
slidy_presentation()
(https://stackoverflow.com/q/59157211/559676).
Removed the jQuery dependency in
html_document_base() (#1723). To avoid bugs like #1723,
Pandoc 2.8 users have to upgrade to Pandoc 2.9+.
For pdf_document, horizontal rules generated by
Pandoc (before v2.8) stopped working in recent versions of TeX Live, and
the same fix as the one to https://github.com/jgm/pandoc/issues/5801
(i.e., hard-code \linethickness to 0.5pt) was
applied in rmarkdown (thanks, @cderv,
https://stackoverflow.com/a/58646915/559676).
For the output format pdf_document(), we no longer
adjust the vertical spacing of the title area. This means there will be
a larger spacing above the document title in PDF. If you prefers the old
(smaller) spacing, please download
https://github.com/rstudio/rmarkdown/blob/f6961af/inst/rmd/latex/compact-title.tex
and include it to the preamble via the includes option of
pdf_document. However, please note that this means you
won’t be able to have multiple authors in the author field
of the YAML frontmatter, unless you use a custom LaTeX template. With
the default LaTeX template, you will run into the error in #1716.
Besides, the compact-title option in YAML is no longer
supported.
R code in the header-includes field in the YAML
frontmatter stopped working in the previous version of
rmarkdown. The code should be evaluated before passing
to Pandoc (thanks, @mcol
#1709, @cderv
#1710).
The encoding argument is no longer passed to the
intermediates_generator of R Markdown output formats. The
intermediates_generator function can only accept arguments
input_file and intermediates_dir now (see
?rmarkdown::output_format). This is a breaking change to
developers. If you are an output format developer, you have to remove
the encoding argument in your
intermediates_generator if your output format uses this
function.
The encoding argument is no longer passed to the
render element of the site generator (see
?rmarkdown::render_site).
The encoding argument has been removed from many of
the internal functions in the rmarkdown package. Now
all input files are assumed to be encoded in UTF-8. If you see an error
message like “Error in FUN(arg = ...): unused argument
(arg = ...)”, please file an issue (with a reproducible
example) to https://github.com/rstudio/rmarkdown.
Added a new output format context_document() to
support ConTeXT output (thanks, @RLesur #1725, @jooyoungseo #1713).
render_site() can render R scripts in addition to
Rmd files if you set autospin: true in
_site.yml (thanks, @zeehio, #1564).
Added ext argument to md_document().
Its default value is “.md”. This argument is intended to be used
together with variant argument (e.g.,
variant = "context" and ext = ".pdf") (thanks,
@atusy,
#1715).
ioslides_presentation() stylesheet is updated for
printing. Browsers are notified that the presentation should
preferentially be printed in landscape orientation and without margin
(thanks, @RLesur,
#1718).
Reverted the fix #1703 and applied an alternative fix to #1700, because the original fix brought a new bug #1714 (thanks, @pablobernabeu @cderv @everron @aronatkins).
Tabsets don’t work with Pandoc 2.8 (thanks, @mnazarov, #1723).
The pdf_document format failed to work if the
header-includes field in YAML is an empty list (thanks,
@cderv,
#1728).
For pdf_document(), now we patch Pandoc’s built-in
LaTeX template to include the document subtitle (unnecessary with pandoc
2.6 onwards) and reduce the vertical spacing before title using
--include-in-header rather than overwriting the built-in
template, avoiding compability problems with newer versions of Pandoc
(thanks, @adunning,
#1563).
find_external_resources() works now when multiple
files are specified in the includes option of the output
format (thanks, @andrie, #1677).
find_external_resources() can find external
resources specified in the output format’s reference_doc or
reference_docx option now (thanks, @jmcphers, #1696).
rmarkdown::run(file = NULL, dir = "foo/") failed to
run Rmd files under the foo/ directory (thanks, @jenzopr, #1703).
Reverted the fix for #1692 since it is no longer necessary (https://github.com/yihui/tinytex/issues/152#issuecomment-552796864).
The header-includes field in the YAML metadata will
no longer be overwritten by the command-line option
--include-in-header (thanks, @crsh @mnazarov, #1359).
Removed the xmlns attribute in the
<html> tag in the default HTML template (thanks,
@grady #1640, @spgarbet #995).
html_vignette() passes self_contained
argument value to base format (thanks, @cderv, #1668).
find_external_resources() works for the
html_vignette type again, this fixes rendering vignettes
with external resources in pkgdown (regression introduced in rmarkdown
1.16, #1668).
render(..., clean = TRUE) may fail to clean the
*_files directory when the output format is
prettydoc::html_pretty (thanks, @yixuan, #1664).
For ioslides_presentation, images with atributes
(e.g., {width=80%}) can be correctly
embedded in the self-contained mode now (thanks, @hadley, #1687).
Fixed the Pandoc LaTeX templates to avoid the error
Filegrffile.sty’ not found`. This is because the LaTeX
grffile is no longer available in TeX Live (thanks,
@cderv #1691, @smmurphy #1692, @JacobD05
https://github.com/yihui/tinytex/issues/152).
The pandoc-citeproc binary can now be found
correctly on Windows. This fixes an issue with
pandoc_citeproc_convert() (thanks @cderv, #1651).
Added self_contained argument to
html_vignette to keep intermediate directory if
self_contained = FALSE (thanks, @cderv, #1641).
It is now possible to add pagebreak in HTML, Word, LaTeX, and ODT
documents using the \newpage or \pagebreak
command in an Rmd file. This is possible thanks to the Pandoc’s
pagebreak Lua filter. See
vignette("lua-filters", package = "rmarkdown") (thanks,
@cderv,
#1626).
The Pandoc extension ascii_identifiers is no longer
enabled by default. If you still need it, you may use the argument
md_extensions = "+ascii_identifiers" in the output format
function. However, please note that this will trigger an error in a
future version of Pandoc.
Output formats can be configured by arbitrary YAML files, which
used to be restricted to _output.yml or
_output.yaml. They can be specified via the
output_yaml argument of render() or the
output_yaml top-level parameter of YAML front matter, and
the first existing one will be used. If output_yaml is
specified both for render() and YAML front matter, then
render() has the priority. If none are found, then
_output.yml or _output.yaml will be used if
they exist (thanks, @atusy, #1634).
Added a Pandoc Lua filter to convert fenced Divs to LaTeX
environments when the output format is latex or
beamer. Basically a fenced Div
::: {.NAME data-latex="[OPTIONS]"} is converted to
\begin{NAME}[OPTIONS] \end{NAME} in LaTeX. The attribute
data-latex must be provided, even if it is an empty string
(meaning that the LaTeX environment does not have any optional
arguments). For example, ::: {.verbatim data-latex=""}
generates a verbatim environment, and
::: {.minipage data-latex="{.5\textwidth}"} generates
\begin{minipage}{.5\textwidth}. This Lua filter was
originally written by @RLesur at
https://github.com/yihui/bookdown-crc/issues/1. It will allow users to
create custom blocks that work for both HTML and LaTeX output (e.g.,
info boxes or warning boxes).
Added keep_html argument to
github_document so to save a preview HTML file in a working
directory (thanks, @atusy, #1650).
Exclude README.R?md from files processed by
render_site(),
html_document with code_folding: hide
supports showing individual source code chunks if they are assigned the
fold-show class via the chunk option
class.source="fold-show" (thanks, @atusy, #1602).
The extra_dependencies argument only works with
template: default in pdf_document. Now it
works with any Pandoc LaTeX templates as long as the template uses the
header-includes variable.
Fixed a regression in ioslides_presentation that
background colors via the data-background attribute on
slides stopped working (thanks, @ShKlinkenberg, #1265).
Fixed the bug #1577 introduced in rmarkdown
v1.12: tabsets, floating TOC, and code folding in the
html_document format no longer work with the
shiny runtime (thanks, @RLesur for the fix #1587, and @fawda123 @ColinChisholm @JasonAizkalns for
the bug report).
Added the keep_md argument to
pdf_document() to keep the intermediate .md
output file (thanks, @broomej, #1001).
For render(), if the input filename contains special
characters such as spaces or question marks (as defined in
rmarkdown:::.shell_chars_regex), the file will be
temporarily renamed with the special characters replaced by
- (dash) instead of _ (underscore, as in
previous versions of rmarkdown). This change will
affect users who render such files with caching (cache will be
invalidated and regenerated). The change is due to the fact that
- is generally a safer character than _,
especially for LaTeX output (#1396).
Added a pkgdown site for the rmarkdown package: https://rmarkdown.rstudio.com/docs/ (thanks, @apreshill, #1574).
Fixed the bug #1593: in HTML documents, when a MathJax URL is used with a custom template, the source code of the MathJax library is included in the document. This bug was first declared in bookdown (thanks, @topepo for the bug report rstudio/bookdown#683, and @RLesur for the fix #1594).
For pdf_document(), do not override margins to 1
inch when a custom document class or geometry settings are specified in
the YAML front matter (thanks, @adunning, #1550)
The default value of the encoding argument in all
functions in this package (such as render() and
render_site()) has been changed from
getOption("encoding") to UTF-8. We have been
hoping to support UTF-8 only in rmarkdown,
knitr, and other related packages in the future. For
more info, you may read
https://yihui.org/en/2018/11/biggest-regret-knitr/.
The option toc_float: true for
html_document now preserves the text formatting (thanks,
@codetrainee,
#1548).
For the output_file argument of
render(), a file extension will be automatically added if
the filename does not contain an extension (e.g.,
render('foo.Rmd', 'html_document', output_file = 'bar')
will generate bar.html); see the help page
?rmarkdown::render for details (thanks, @apreshill,
#1551).
TOC items are not correctly indented when toc_float
is enabled for the html_document format (thanks, @carolynwclayton
#1235 and @RLesur
#1243).
Fixed rstudio/shiny#2307 where the second execution of a
shiny_prerendred document with href
dependencies would cause a prerender check error (thanks, @schloerke,
#1562).
The *_files directory is not properly cleared due to
the inappropriate fix for #1503 and #1472 in the last version (thanks,
@wxli0 #1553, @cderv #1566).
Added an output_extensions argument to
pdf_document() to make it possible to enable/disable Pandoc
extensions for the LaTeX output format (thanks, @hongyuanjia,
rstudio/bookdown#687).
Fixed file extensions of output files when using non-markdown
Pandoc extensions such as docx+styles (#1494, @noamross).
Added a new argument extra_lines to
latex_dependency() to allow users to add extra lines of
LaTeX code after \usepackage{}. Also added a helper
function latex_dependency_tikz() based on
latex_dependency() (#1502, @malcolmbarrett).
Fixed #1529: when the path of an Rmd file contains Unicode
characters that cannot be represented in the system native encoding
(especially on Windows), rmarkdown::render() may
fail.
Applied a correct fix to an old plotly issue ropensci/plotly#463.
HTML widgets used to be hidden when printing ioslides to PDF in Chrome. Now they will be printed correctly.
render(output_format = 'all') may delete the figure
directories that are still needed by certain output formats when one
output format doesn’t need its figure directory (thanks, @rmcd1024 #1472, @cderv #1503).
The <em> tags in the subtitle, date, and
author are removed from the default HTML template (thanks, @royfrancis,
#1544).
Fixed #1483, which prevented the triangle to be displayed in
Firefox when
<details><summary>...</summary></details>
was used (#1485, @bisaloo)
Provided rmarkdown.pandoc.args as a
knitr package option in knitr::opts_knit
(#1468, @noamross).
Added the exported function pandoc_exec(), which
returns the path of the pandoc binary used by the package (#1465, #1466
@noamross).
new_session: true in _site.yml causes
render_site() to render each file in a new R session,
eliminating some cross-file difficulties, such as function masking
(#1326, #1443 @jennybc).
Added the LaTeX command \passthrough in the default
LaTeX template for the --listings flag of Pandoc
(rstudio/bookdown#591).
The icons in flexdashboard::valueBox() are not of
the full sizes due to the upgrade of FontAwesome in #1340 in the
previous version (#1388, rstudio/flexdashboard#189).
Added the ability to generate tabset dropdowns, usable by adding
the .tabset-dropdown class to a header (e.g.,
# Heading {.tabset .tabset-dropdown}) (#1405). Thanks @stefanfritsch for
contributing the necessary code for this (#1116).
The darkly theme (a darker variant of the Bootswatch
flatly theme) has been added to html_document
and html_notebook (#1409, #889).
Fixed a regression that caused scrollbars on code blocks when the syntax highlighting theme is not the default (#654, #1399).
Fixed #1407: reactive expressions can break the section headers of Shiny R Markdown documents.
Fixed #1431: render() with the
intermediates_dir argument when the output format is
powerpoint_presentation with a custom
reference_doc fails to find the reference
document.
Fixed the website navbar not being able to display submenus properly (#721, #1426).
Added checks for shiny-prerendered documents to find all html dependencies, match all execution packages, and match the major R version (#1420).
Added an argument cache = TRUE to the internal
function rmarkdown:::find_pandoc(), so that users can
invalidate the cached path of Pandoc via
rmarkdown:::find_pandoc(cache = FALSE) (thanks, @hammer, #1482).
Added an RStudio project template for simple R Markdown websites,
so that users can create such websites from RStudio:
New Project -> New Directory -> Simple R Markdown Website
(thanks, @kevinushey, #1470).
Fixed #1471: Pandoc’s (version 2.x) syntax highlighting themes don’t work well with the Bootstrap style (thanks, @gponce-ars #1471, @cderv #1489).
Fixed the warnings in #1224 and #1288 when calling
render() with an absolute output_dir or
intermediates_dir.
Fixed #1300: calling render() with
intermediates_dir may fail when the intermediate dir is on
a difference device or filesystem.
Fixed #1358: calling render() with
intermediates_dir will fail if the Rmd document contains
bibliography files that are dynamically generated.
Added a new argument slide_level to
powerpoint_presentation() (#1270).
The tinytex package has become a required dependency (to build R Markdown to PDF).
Added compact-title variable to the LaTeX default
templates to control use of LaTeX titling package; defaults
to true (#1284).
pdf_document(template = NULL) does not work
(#1295).
Restore ability to use any HTML format with R Markdown Websites (#1328).
Add options argument to paged_table()
to enable explicit passing of display options.
Add pandoc_citeproc_convert() function for
conversion of bibliography files (e.g. BibTeX files).
Update to Font Awesome version 5.0.13 (#1340).
Add site_resources() function for computing resource
files required for a website.
Export default_site_generator() function.
The latex_document() format should not clean up the
figure directory (thanks, @emiltb, rstudio/bookdown#582).
Enable post processors that change the output file to specify that the base post processor should still be applied to the original output file.
powerpoint_presentation. If you want to test it, you will
need Pandoc >= 2.1 (#1231).tinytex::latexmk(), otherwise it is generated
by rmarkdown:::latexmk(), which has been factored out and
improved in the tinytex package, so it is recommended
that you install the tinytex package (#1222).Temporary files created in render() may be cleaned
up prematurely, which can cause problems with Shiny R Markdown documents
(#1184).
Further improvements regarding compatibility with Pandoc 2.0, e.g. tabbed sections don’t work (https://community.rstudio.com/t/3019).
When preserve_yaml = TRUE in
md_document(), toc = TRUE fails to create the
table of contents (thanks, @stla, #1216).
Suppress confusing error messages from knitr::purl()
during rmarkdown::find_external_resources() (thanks, @aronatkins #1247, and
@paulobrecht
#1154).
Fixed the obscure error
Error: path for html_dependency not found:, which was due
to the HTML dependency of highlight.js (thanks, @bborgesr, #1213).
render_site() does not work with
_site.yml that does not have the output
setting (#1189).
The variables input and output do not
work in Shiny R Markdown documents (#1193).
ioslides_presentation fails to embed images
(#1197).
With Pandoc 2.x, github_document() generates the
wrong filename extension .gfm-ascii_identifiers instead of
.md, and line height of code blocks in the HTML preview is
too big (#1200).
Fixed an issue with df_print: paged where row names
where not printed and added support for rownames.print
option to control when they print.
Add smart option for word_document()
format.
Save render intermediates when generating beamer presentations (fixes #1106).
Fixed issues when specifying NULL/null/empty parameter values (#729 and #762).
Better error message when unable to prerender a document. (#1125)
shiny::renderText() does not work in Markdown
section headings (#133).
The value argument of
pandoc_variable_arg() can be missing now (#287).
Background colors and images are supported for ioslides presentations (#687).
HTML widgets in an Rmd document cannot be rendered if another Rmd
document is rendered via rmarkdown::render() in this
document (#993).
Try harder to clean up temporary files created during
render() (#820).
Wrong environment for evaluating R code chunks in Shiny R Markdown docs (#1162, #1124).
Do not call bibtex to create the bibliography when
there are no citations in the document and the output format is
pdf_document() with
citation_package = 'natbib' (#1113).
render() will stop if the output format is PDF but
there are any errors during building the index or bibliography
(#1166).
beamer_presentation() doesn’t work when
citation_package != 'none' (#1161).
File-based inputs don’t work in parameterized documents (#919).
rmarkdown is compatible with Pandoc 2.0 now (#1120).
render() with intermediates_dir fails
with R plots (#500).
Added two new output formats latex_document() and
latex_fragment() (#626).
Relative paths of images in HTML output should not be resolved to absolute paths (#808).
render_site() does not support multiple output
formats for a single Rmd (#793).
Unicode characters may be scrambled when downloading the Rmd
source file using the download button generated by
html_document(code_download = TRUE) (#722).
Upgraded highlight.js from v1.1 to v9.12.0 (#988, #907).
The argument keep_md = TRUE actually preserves the
Markdown output file from knitr::knit() now (as
documented). Previously, it generates a new Markdown file by
concatenating the YAML metadata (title, author, date) with the body of
the original Markdown output file (#450).
For md_document(), when
variant == 'markdown' and
perserve_yaml = TRUE, the Pandoc argument
--standalone should not be used (#656).
Fixed an issue where headers with non-ASCII text would not be linked to correctly in the table of contents.
Support code folding for bash, python, sql, Rcpp, and Stan chunks.
Provide rmarkdown.pandoc.id_prefix as Knit option
Fixed two issue with df_print: paged, one would
prevent rendering data with lists of lists and the other where the
column type would get cut off.
Better support for citation_package: biblatex in
pdf_document() (#1062).
On certain Windows platforms, compiling LaTeX to PDF may fail
because system2(stdout = FALSE) is not supported, in which
case the default system2() will be used (#1061).
Allow paged tables to render even when page load / visibility has a long delay
Fixed an issue where code within Shiny pre-rendered documents was not rendered correctly.
Add includes parameter to html_fragment
format.
Use RStudio redirection URL to replace deprecated MathJax CDN
data.table expressions involving := are
no longer automatically printed within R Markdown documents.
(#829)
Fix #910: the extra_dependencies argument of pdf_document() does not work when no code chunks contain LaTeX dependencies.
The extra_dependencies of pdf_document() can also take a character vector of LaTeX package names, or a named list of LaTeX package options (with names being package names), which makes it much easier to express LaTeX dependencies via YAML.
Automatically ignore packrat directory for render_site
Fix #943: escape end tags in shiny_prerendered code contexts
Add support for sticky tabs in html_document via tabset-sticky class
Process Rmd files with lowercase extension (.rmd) in render_site
Fix stack space consumption issues with large JS payloads in chunks
Add section_divs argument to html_document and
html_fragment to control generation of section tags/divs.
Remove data-context=“(data|server|server-start)” chunks from HTML served to client in shiny_prerendered
Fix v1.2 regression in ordering of CSS for ioslides_presentation.
Fix rendering of pagedtables within html_notebook format.
Ensure that html_prerendered UI is never cached.
Add citeproc argument to YAML header; controls
whether pandoc-citeproc is used (#831)
Add support for df_print to handle additional dplyr classes: grouped_df, rowwise_df and tbl_sql.
Add new runtime: shiny_prerendered mode for
interactive documents.
Prepend “section-” to ids in runtime: shiny[_prerendered] to eliminate potential conflicts with shiny output ids
Use html_dependencies for highlight.js, pagedtables, slidy, ioslides, & navigation (improved dependency behavior for runtime: shiny[_prerendered])
Serialize runtime: shiny[_prerendered] dependencies to JSON rather than .rds
ioslides: check for null before concatenating attr[“class”] (#836)
Add rmarkdown.onKnit/onKnitCompleted package hooks
Non-ASCII keys in yaml file should be marked to UTF8 as well, when read into R as the name of a list (#841)
Remove key-column special-case left alignment in pagedtables (#829)
Replace backslashes in floating TOC headings (#849)
Suggests rather than Imports for tibble (R 3.0 compatibility)
Add paged_table function for printing paged tables
within HTML documents
Support {.active} attribute for setting initially
active tab (#789)
Add knit_root_dir argument to render()
and YAML header, a convenience for setting knitr’s root.dir
option
Improve alignment of text in sub-topics for floating TOC
Bibliography file paths in YAML containing forward slashes could not be rendered (#875)
Fixed an issue where attempts to render an R Notebook could fail if the path contained multibyte characters.
Fixed an issue where the default Beamer template did not provide vertical padding between paragraphs with certain versions of pandoc (<= 1.17.2).
Try to install latexmk automatically on Windows
Added df_print option to html_document format for
optionally printing data frames using knitr::kable, the
tibble package, or an arbitrary function
Fix for render_site not showing Chinese characters correctly
Fix for ignoring knit_meta that is explicitly passed to render
Parameter editing: don’t allow NULL to overwrite previous state
Parameter editing: fix incorrect name for parameters with expressions
Parameter editing: allow multiple values when the parameter is configured to use a “multiple” selector
Switched the order in which format dependencies are added for
html_document so that extra_dependencies are
added at the end, after bootstrap, etc. (#737)
pdf_document(keep_tex = TRUE) will generate the .tex
document even if PDF conversion fails (#779).
Move latex header includes to just before \begin{document}
Special ‘global’ chunk label for runtime: shiny which designates a chunk to be run once and only once in the global environment (startup performance improvement for multi-user shiny documents)
Ensure supporting files are writeable (#800)
Make the “show code” buttons more CSS-friendly (#795)
Exclude output_dir from site files (#803)
Export navbar_html and
yaml_front_matter functions
toc_float no longer automatically sets
toc = TRUE
Added an argument error to
pandoc_available() to signal an error when (if
error = TRUE) pandoc with the required version is not
found.
Added html_notebook format for creating HTML
documents that include source code and output.
Added resolve_output_format function (useful for
front ends that need to mirror the default format resolution logic of
render).
Added code_download option to
html_document to provide an option to embed a downloadable
copy of the Rmd source code within the document.
Added slide_level option to ioslides_presentation to
set the level of heading used for individual slides.
Added hard_line_breaks option to
github_document to deal with change in behavior of GitHub’s
markdown renderer with respect to line breaks.
Use “markdown_strict” rather than “markdown” for
pandoc_self_contained_html when pandoc >= 1.17 (pandoc
hanging bug was fixed in this version)
Default highlighting engine for html_document now
highlights bash, c++, css, ini, javascript, perl, python, r, ruby,
scala, stan and xml
Added print sub-option to toc_float to
control whether the table of contents appears when user prints out the
HTML page.
Added readme option to html_vignette
which automatically creates a package level README.md (for GitHub) in
addition to rendering the vignette.
Support for keep_md in html_vignette
format.
Try to install the latexmk package automatically on Windows if the executable latexmk.exe exists.
Ability to set opts_hooks in
knitr_options() (#672)
Added render_site and related functions for
rendering collections of documents within a directory as a
website.
Ability to define html_document navigation bar using simple yaml format.
Added pre_knit and post_knit hooks for
output formats.
Discover LaTeX dependencies and add them to the
.tex preamble (#647)
Added new all_output_formats function to enumerate
all output formats registered for an Rmd.
Change fig_caption default to TRUE for all
formats
Change fig_retina to 2 for HTML formats (no longer
contingent on fig_caption)
Ensure pandoc binary exists before binding to pandoc directory (#632)
Handle relative paths for ‘default_output_format’ (#638)
Eliminate duplicate viewport meta tag from html_document
Added biblatex biblio-style support to the LaTeX template for Pandoc 1.15.2 (#643)
Allow override of header font-size in html_document custom css (#652)
Fix for horizontal scrollbars appearing w/ code folding (#654)
Specifying toc_float in html_document
now automatically sets toc = TRUE
Enable per-header opt-out of toc-float via
{.toc-ignore} attribute
Correctly handle soft line breaks in ioslides_presentation (#661)
Don’t use text-muted for code folding btns (text visibility in non-default themes)
Fix for rendering non-HTML formats from .md files (resolve runtime before knit)
html_dependency_bootstrap now accepts theme =
“default” argument
Use pandoc 1.17.0.2 compatible LaTeX template when pandoc >= 1.17.0.2
Support custom template for
ioslides_presentation
Added analytics option for
ioslides_presentation for Google Analytics
Removed the extra tag <p></p> around
HTML output (typically generated by htmltools) from code chunks, to
avoid invalid HTML like
<p><div>...</div><p>
(#685)
Added odt_document format for OpenDocument Text output
Added rtf_document format for Rich Text Format output
Added github_document format for GitHub Flavored Markdown output
Only apply white background for themed HTML documents (#588)
Added
to the default HTML template to make it work better with mobile browsers. (#589)
Specify –filter pandoc-citeproc after custom pandoc args
Long lines in code blocks will be wrapped in the
html_vignette() output (#595)
Added new arguments run_pandoc = TRUE and
knit_meta = NULL to render(). See the help
page of render for details. (#594)
The tufte_handout format now delegates to the
tufte package and no longer provides a base
template.
Use pandoc 1.15.2 compatible LaTeX template when pandoc >= 1.15.2
Fix issue with Beamer template and pandoc 1.15.2
Updated embedded JQuery to v1.11.3 and Bootstrap to v3.3.5.
Expose core HTML dependencies for use by custom R Markdown formats.
New html_document themes: “lumen”, “paper”,
“sandstone”, “simplex”, & “yeti”.
Ability to include bootstrap navbar for multi-page
html_document websites
Added support for abstract field to
html_document format
Added support for floating table of contents (via tocify) to
html_document
Added support for tabsets via use of {.tabset} class on top-level headings
Added support for folding/unfolding of R code chunks in
html_document
Support url references in CSS files for
runtime: shiny
Change name of common options file to
_output.yml
Tweak pandoc conversion used in
pandoc_self_contained_html to prevent hanging with large
script elements (use “markdown” rather than “markdown-strict” as input
format)
The filename extension .bib will be removed before bibliography files are passed to Pandoc when the output is LaTeX/PDF and the citation package natbib or biblatex is used on Windows. This is because bibtex in MikTeX will always add the extension .bib to bibliography files, e.g. it treats foo.bib as foo.bib.bib. (#623)
Render Shiny documents in a clean environment; fixes issue in which code in Shiny documents could access internal R Markdown state
Fix for a bug causing certain files to be deleted as intermediate files. (#580)
PDF/LaTeX output no longer uses natbib as the citation package by default. If you do want to use natbib or biblatex, you may still use the argument citation_package = ‘natbib’ or ‘biblatex’. (#577)
Fix for JS exception in slidy_presentation when served from the filesystem (don’t call pushState for file:// urls)
Escape single quotes in file paths
Fix for missing resources when rendering a filename with shell characters
For PDF/LaTeX output, citations are processed via natbib or
biblatex instead of pandoc-citeproc. The ciation package natbib or
biblatex can be chosen using the argument citation_package
in pdf_document(), beamer_presentation(), and
tufte_handout(). LaTeX is compiled to PDF via latexmk
(https://www.ctan.org/pkg/latexmk/); if it is not installed, a simple
emulation will be used (run pdflatex/xelatex/lualatex, bibtex, and
makeindex a few times). You are recommended to install latexmk, and
please note latexmk requires a Perl installation (this is important
especially for Windows users).
Always use the graphics package for PDF output
Fix for the error “cannot change value of locked binding for ‘metadata’” when one call of rmarkdown::render() is nested in another one (#248)
Fix for an issue causing image paths to be rendered incorrectly
in Windows when rendering an html_document with
self_contained: false and a path is passed in argument
output_dir. (#551)
Add always_allow_html option for preventing errors when html_dependencies are rendered in non-HTML formats (e.g. pdf_document or word_document).
Fix for an issue causing resources not to be discovered in some
documents containing an empty quoted string ("") in an R
chunk.
Support for table of contents in word_document (requires pandoc >= 1.14)
Support for opts_template in knitr options
Don’t implicitly discover directories when scanning for dependent resources
Fix for slide numbers not showing up in ioslides when served from the filesystem (don’t call pushState for file:// urls)
Remove inlining of bootstrap CSS (was workaround for bug now fixed in pandoc)
Allow specifying an R file in calls to find_all_resources
Add support for keep_md to word_document
Increase pandoc stack size to 512M (often required for base64 encoding e.g. larger embedded leaflet maps). Stack size can also be controlled by the pandoc.stack.size option.
Allow YAML front matter to be terminated with …
Automatically generate a user-interface (via a Shiny application) for user specification of values in parameterized reports.
Add tightlist macro for compatibility with pandoc >= 1.14
Bugfix: Don’t merge render params recursively with knit_params
Bugfix: Handle slashes correctly on Windows for slidy_presentation when self_contained = FALSE
Add latex_engine option to beamer_presentation format
Ensure that when LANG=en_US pandoc receives en_US.UTF-8 (prevent hang)
Generate MathJax compatible output when using html_fragment format.
Use pandoc built-in template for Beamer
Use pandoc 1.14 compatible LaTeX template when pandoc >= 1.14
Inline bootstrap.min.css to workaround pandoc 1.14 base64 encoding issue
Add support for discovering references to external resources when the document output format is PDF
Fix several issues causing pandoc errors when an intermediates directory is used, including during render for Shiny documents
Support for parameterized reports. Parameter names and default values are defined in YAML and can be specified via the ‘params’ argument to the render function
‘md_extensions’ option to enable/disable markdown extensions for input files
Automatically discover and include dependent resources (e.g. images, css, etc.) for interactive documents.
Added pandoc_version function.
Use VignetteEncoding directive in html_vignette format
Fix issues related to use of non-ASCII characters in ioslides_presentation
Non-ASCII characters in the YAML data are not marked with the
UTF-8 encoding when they are read into R, so character strings in
rmarkdown::metadata may be displayed incorrectly
(#420)
Various improvements to tufte_handout format
Add ‘dev’ option to output formats to specify output device for figures
Enable use of footnotes in titles of LaTeX documents
Various improvements related to directory detection/handling on Windows
Sync to the latest LaTeX and Beamer templates from pandoc-templates
Switched from the Bootstrap 2 web framework to Bootstrap 3. This is designed to work with Shiny >= 0.10.3, which has made the same switch
Add CSS to restore responsive image behavior from Bootstrap 2
Use a more subtle treatment for inline code in Bootstrap themed documents
Improved support for multiple authors in ioslides
Workaround for poor rendering of ioslides multi-columns lists in Safari 8
Serve index.html as fallback default file for rmarkdown::run
Initial release to CRAN
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