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commonmark

High Performance CommonMark and Github Markdown Rendering in R

CRAN_Status_BadgeCRAN RStudio mirror downloads

The CommonMark specification defines a rationalized version of markdown syntax. This package uses the 'cmark' reference implementation for converting markdown text into various formats including html, latex and groff man. In addition it exposes the markdown parse tree in xml format. The latest version of this package also adds support for Github extensions including tables, autolinks and strikethrough text.

Documentation

Basic Markdown

library(commonmark)
md<-"## TestAn *example* text for the `commonmark` package."# Convert to Latex
cat(markdown_latex(md))
\subsection{Test}
An \emph{example} text for the \texttt{commonmark} package.

# Convert to HTML
cat(markdown_html(md))
<h2>Test</h2>
<p>An <em>example</em> text for the <code>commonmark</code> package.</p>

# Convert to 'groff' man 
cat(markdown_man(md))
.SS
Test
.PP
An \f[I]example\f[] text for the \f[C]commonmark\f[] package.

# Convert back to (normalized) markdown
cat(markdown_commonmark(md))
## Test
An *example* text for the `commonmark` package.

# The markdown parse tree
cat(markdown_xml(md))
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
<heading level="2">
<text>Test</text>
</heading>
<paragraph>
<text>An </text>
<emph>
<text>example</text>
</emph>
<text> text for the </text>
<code>commonmark</code>
<text> package.</text>
</paragraph>
</document>

Github Extensions

Commonmark includes several 'extensions' to enable features which are not (yet) part of the official specification. The current version of the commonmark R package offers 4 such extensions:

  • table support rendering of tables
  • strikethough via ~sometext~ syntax
  • autolink automatically turn URLs into hyperlinks
  • tagfilter blacklist html tags: titletextareastylexmpiframenoembednoframesscriptplaintext.
  • tasklist turns certain list items into checkboxes

These extensions were added by Github to support GitHub Flavored Markdown.

table<-'aaa | bbb | ccc | ddd | eee:-- | --- | :-: | --- | --:fff | ggg | hhh | iii | jjj'
cat(markdown_latex(table, extensions=TRUE))
\begin{table}
\begin{tabular}{llclr}
aaa & bbb & ccc & ddd & eee \\
fff & ggg & hhh & iii & jjj \\
\end{tabular}
\end{table}

cat(markdown_html(table, extensions=TRUE))
<table>
<thead>
<tr>
<th align="left">aaa</th>
<th>bbb</th>
<th align="center">ccc</th>
<th>ddd</th>
<th align="right">eee</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">fff</td>
<td>ggg</td>
<td align="center">hhh</td>
<td>iii</td>
<td align="right">jjj</td>
</tr></tbody></table>

About

High Performance CommonMark and Github Markdown Rendering in R

docs.ropensci.org/commonmark/

Topics

cmarkcmark-gfmgfmmarkdown

Resources

Readme
License
Activity
Custom properties

Stars

102 stars

Watchers

7 watching

Forks

12 forks
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
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Repository files navigation
commonmark
High Performance CommonMark and Github Markdown Rendering in R
CRAN_Status_BadgeCRAN RStudio mirror downloads
The CommonMark specification defines a rationalized version of markdown
syntax. This package uses the 'cmark' reference implementation for converting
markdown text into various formats including html, latex and groff man. In
addition it exposes the markdown parse tree in xml format. The latest version of
this package also adds support for Github extensions including tables, autolinks
and strikethrough text.
Documentation
Basic Markdown
library(commonmark)
md<-"## TestAn *example* text for the `commonmark` package."# Convert to Latex
cat(markdown_latex(md))
\subsection{Test}
An \emph{example} text for the \texttt{commonmark} package.

# Convert to HTML
cat(markdown_html(md))
<h2>Test</h2>
<p>An <em>example</em> text for the <code>commonmark</code> package.</p>

# Convert to 'groff' man 
cat(markdown_man(md))
.SS
Test
.PP
An \f[I]example\f[] text for the \f[C]commonmark\f[] package.

# Convert back to (normalized) markdown
cat(markdown_commonmark(md))
## Test
An *example* text for the `commonmark` package.

# The markdown parse tree
cat(markdown_xml(md))
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
<heading level="2">
<text>Test</text>
</heading>
<paragraph>
<text>An </text>
<emph>
<text>example</text>
</emph>
<text> text for the </text>
<code>commonmark</code>
<text> package.</text>
</paragraph>
</document>

Github Extensions
Commonmark includes several 'extensions' to enable features which are not (yet) part of the official specification. The current version of the commonmark R package offers 4 such extensions:
  • table support rendering of tables
  • strikethough via ~sometext~ syntax
  • autolink automatically turn URLs into hyperlinks
  • tagfilter blacklist html tags: titletextareastylexmpiframenoembednoframesscriptplaintext.
  • tasklist turns certain list items into checkboxes
These extensions were added by Github to support GitHub Flavored Markdown.
table<-'aaa | bbb | ccc | ddd | eee:-- | --- | :-: | --- | --:fff | ggg | hhh | iii | jjj'
cat(markdown_latex(table, extensions=TRUE))
\begin{table}
\begin{tabular}{llclr}
aaa & bbb & ccc & ddd & eee \\
fff & ggg & hhh & iii & jjj \\
\end{tabular}
\end{table}

cat(markdown_html(table, extensions=TRUE))
<table>
<thead>
<tr>
<th align="left">aaa</th>
<th>bbb</th>
<th align="center">ccc</th>
<th>ddd</th>
<th align="right">eee</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">fff</td>
<td>ggg</td>
<td align="center">hhh</td>
<td>iii</td>
<td align="right">jjj</td>
</tr></tbody></table>

About
High Performance CommonMark and Github Markdown Rendering in R
docs.ropensci.org/commonmark/
Topics
cmarkcmark-gfmgfmmarkdown
Resources
Readme
License
Activity
Custom properties
Stars
102 stars
Watchers
7 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
commonmark
High Performance CommonMark and Github Markdown Rendering in R
CRAN_Status_BadgeCRAN RStudio mirror downloads
The CommonMark specification defines a rationalized version of markdown
syntax. This package uses the 'cmark' reference implementation for converting
markdown text into various formats including html, latex and groff man. In
addition it exposes the markdown parse tree in xml format. The latest version of
this package also adds support for Github extensions including tables, autolinks
and strikethrough text.
Documentation
Basic Markdown
library(commonmark)
md<-"## TestAn *example* text for the `commonmark` package."# Convert to Latex
cat(markdown_latex(md))
\subsection{Test}
An \emph{example} text for the \texttt{commonmark} package.

# Convert to HTML
cat(markdown_html(md))
<h2>Test</h2>
<p>An <em>example</em> text for the <code>commonmark</code> package.</p>

# Convert to 'groff' man 
cat(markdown_man(md))
.SS
Test
.PP
An \f[I]example\f[] text for the \f[C]commonmark\f[] package.

# Convert back to (normalized) markdown
cat(markdown_commonmark(md))
## Test
An *example* text for the `commonmark` package.

# The markdown parse tree
cat(markdown_xml(md))
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
<heading level="2">
<text>Test</text>
</heading>
<paragraph>
<text>An </text>
<emph>
<text>example</text>
</emph>
<text> text for the </text>
<code>commonmark</code>
<text> package.</text>
</paragraph>
</document>

Github Extensions
Commonmark includes several 'extensions' to enable features which are not (yet) part of the official specification. The current version of the commonmark R package offers 4 such extensions:
  • table support rendering of tables
  • strikethough via ~sometext~ syntax
  • autolink automatically turn URLs into hyperlinks
  • tagfilter blacklist html tags: titletextareastylexmpiframenoembednoframesscriptplaintext.
  • tasklist turns certain list items into checkboxes
These extensions were added by Github to support GitHub Flavored Markdown.
table<-'aaa | bbb | ccc | ddd | eee:-- | --- | :-: | --- | --:fff | ggg | hhh | iii | jjj'
cat(markdown_latex(table, extensions=TRUE))
\begin{table}
\begin{tabular}{llclr}
aaa & bbb & ccc & ddd & eee \\
fff & ggg & hhh & iii & jjj \\
\end{tabular}
\end{table}

cat(markdown_html(table, extensions=TRUE))
<table>
<thead>
<tr>
<th align="left">aaa</th>
<th>bbb</th>
<th align="center">ccc</th>
<th>ddd</th>
<th align="right">eee</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">fff</td>
<td>ggg</td>
<td align="center">hhh</td>
<td>iii</td>
<td align="right">jjj</td>
</tr></tbody></table>

About
High Performance CommonMark and Github Markdown Rendering in R
docs.ropensci.org/commonmark/
Topics
cmarkcmark-gfmgfmmarkdown
Resources
Readme
License
Activity
Custom properties
Stars
102 stars
Watchers
7 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
commonmark
High Performance CommonMark and Github Markdown Rendering in R
CRAN_Status_BadgeCRAN RStudio mirror downloads
The CommonMark specification defines a rationalized version of markdown
syntax. This package uses the 'cmark' reference implementation for converting
markdown text into various formats including html, latex and groff man. In
addition it exposes the markdown parse tree in xml format. The latest version of
this package also adds support for Github extensions including tables, autolinks
and strikethrough text.
Documentation
Basic Markdown
library(commonmark)
md<-"## TestAn *example* text for the `commonmark` package."# Convert to Latex
cat(markdown_latex(md))
\subsection{Test}
An \emph{example} text for the \texttt{commonmark} package.

# Convert to HTML
cat(markdown_html(md))
<h2>Test</h2>
<p>An <em>example</em> text for the <code>commonmark</code> package.</p>

# Convert to 'groff' man 
cat(markdown_man(md))
.SS
Test
.PP
An \f[I]example\f[] text for the \f[C]commonmark\f[] package.

# Convert back to (normalized) markdown
cat(markdown_commonmark(md))
## Test
An *example* text for the `commonmark` package.

# The markdown parse tree
cat(markdown_xml(md))
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
<heading level="2">
<text>Test</text>
</heading>
<paragraph>
<text>An </text>
<emph>
<text>example</text>
</emph>
<text> text for the </text>
<code>commonmark</code>
<text> package.</text>
</paragraph>
</document>

Github Extensions
Commonmark includes several 'extensions' to enable features which are not (yet) part of the official specification. The current version of the commonmark R package offers 4 such extensions:
  • table support rendering of tables
  • strikethough via ~sometext~ syntax
  • autolink automatically turn URLs into hyperlinks
  • tagfilter blacklist html tags: titletextareastylexmpiframenoembednoframesscriptplaintext.
  • tasklist turns certain list items into checkboxes
These extensions were added by Github to support GitHub Flavored Markdown.
table<-'aaa | bbb | ccc | ddd | eee:-- | --- | :-: | --- | --:fff | ggg | hhh | iii | jjj'
cat(markdown_latex(table, extensions=TRUE))
\begin{table}
\begin{tabular}{llclr}
aaa & bbb & ccc & ddd & eee \\
fff & ggg & hhh & iii & jjj \\
\end{tabular}
\end{table}

cat(markdown_html(table, extensions=TRUE))
<table>
<thead>
<tr>
<th align="left">aaa</th>
<th>bbb</th>
<th align="center">ccc</th>
<th>ddd</th>
<th align="right">eee</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">fff</td>
<td>ggg</td>
<td align="center">hhh</td>
<td>iii</td>
<td align="right">jjj</td>
</tr></tbody></table>

About
High Performance CommonMark and Github Markdown Rendering in R
docs.ropensci.org/commonmark/
Topics
cmarkcmark-gfmgfmmarkdown
Resources
Readme
License
Activity
Custom properties
Stars
102 stars
Watchers
7 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
commonmark
High Performance CommonMark and Github Markdown Rendering in R
CRAN_Status_BadgeCRAN RStudio mirror downloads
The CommonMark specification defines a rationalized version of markdown
syntax. This package uses the 'cmark' reference implementation for converting
markdown text into various formats including html, latex and groff man. In
addition it exposes the markdown parse tree in xml format. The latest version of
this package also adds support for Github extensions including tables, autolinks
and strikethrough text.
Documentation
Basic Markdown
library(commonmark)
md<-"## TestAn *example* text for the `commonmark` package."# Convert to Latex
cat(markdown_latex(md))
\subsection{Test}
An \emph{example} text for the \texttt{commonmark} package.

# Convert to HTML
cat(markdown_html(md))
<h2>Test</h2>
<p>An <em>example</em> text for the <code>commonmark</code> package.</p>

# Convert to 'groff' man 
cat(markdown_man(md))
.SS
Test
.PP
An \f[I]example\f[] text for the \f[C]commonmark\f[] package.

# Convert back to (normalized) markdown
cat(markdown_commonmark(md))
## Test
An *example* text for the `commonmark` package.

# The markdown parse tree
cat(markdown_xml(md))
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
<heading level="2">
<text>Test</text>
</heading>
<paragraph>
<text>An </text>
<emph>
<text>example</text>
</emph>
<text> text for the </text>
<code>commonmark</code>
<text> package.</text>
</paragraph>
</document>

Github Extensions
Commonmark includes several 'extensions' to enable features which are not (yet) part of the official specification. The current version of the commonmark R package offers 4 such extensions:
  • table support rendering of tables
  • strikethough via ~sometext~ syntax
  • autolink automatically turn URLs into hyperlinks
  • tagfilter blacklist html tags: titletextareastylexmpiframenoembednoframesscriptplaintext.
  • tasklist turns certain list items into checkboxes
These extensions were added by Github to support GitHub Flavored Markdown.
table<-'aaa | bbb | ccc | ddd | eee:-- | --- | :-: | --- | --:fff | ggg | hhh | iii | jjj'
cat(markdown_latex(table, extensions=TRUE))
\begin{table}
\begin{tabular}{llclr}
aaa & bbb & ccc & ddd & eee \\
fff & ggg & hhh & iii & jjj \\
\end{tabular}
\end{table}

cat(markdown_html(table, extensions=TRUE))
<table>
<thead>
<tr>
<th align="left">aaa</th>
<th>bbb</th>
<th align="center">ccc</th>
<th>ddd</th>
<th align="right">eee</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">fff</td>
<td>ggg</td>
<td align="center">hhh</td>
<td>iii</td>
<td align="right">jjj</td>
</tr></tbody></table>

About
High Performance CommonMark and Github Markdown Rendering in R
docs.ropensci.org/commonmark/
Topics
cmarkcmark-gfmgfmmarkdown
Resources
Readme
License
Activity
Custom properties
Stars
102 stars
Watchers
7 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
commonmark
High Performance CommonMark and Github Markdown Rendering in R
CRAN_Status_BadgeCRAN RStudio mirror downloads
The CommonMark specification defines a rationalized version of markdown
syntax. This package uses the 'cmark' reference implementation for converting
markdown text into various formats including html, latex and groff man. In
addition it exposes the markdown parse tree in xml format. The latest version of
this package also adds support for Github extensions including tables, autolinks
and strikethrough text.
Documentation
Basic Markdown
library(commonmark)
md<-"## TestAn *example* text for the `commonmark` package."# Convert to Latex
cat(markdown_latex(md))
\subsection{Test}
An \emph{example} text for the \texttt{commonmark} package.

# Convert to HTML
cat(markdown_html(md))
<h2>Test</h2>
<p>An <em>example</em> text for the <code>commonmark</code> package.</p>

# Convert to 'groff' man 
cat(markdown_man(md))
.SS
Test
.PP
An \f[I]example\f[] text for the \f[C]commonmark\f[] package.

# Convert back to (normalized) markdown
cat(markdown_commonmark(md))
## Test
An *example* text for the `commonmark` package.

# The markdown parse tree
cat(markdown_xml(md))
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
<heading level="2">
<text>Test</text>
</heading>
<paragraph>
<text>An </text>
<emph>
<text>example</text>
</emph>
<text> text for the </text>
<code>commonmark</code>
<text> package.</text>
</paragraph>
</document>

Github Extensions
Commonmark includes several 'extensions' to enable features which are not (yet) part of the official specification. The current version of the commonmark R package offers 4 such extensions:
  • table support rendering of tables
  • strikethough via ~sometext~ syntax
  • autolink automatically turn URLs into hyperlinks
  • tagfilter blacklist html tags: titletextareastylexmpiframenoembednoframesscriptplaintext.
  • tasklist turns certain list items into checkboxes
These extensions were added by Github to support GitHub Flavored Markdown.
table<-'aaa | bbb | ccc | ddd | eee:-- | --- | :-: | --- | --:fff | ggg | hhh | iii | jjj'
cat(markdown_latex(table, extensions=TRUE))
\begin{table}
\begin{tabular}{llclr}
aaa & bbb & ccc & ddd & eee \\
fff & ggg & hhh & iii & jjj \\
\end{tabular}
\end{table}

cat(markdown_html(table, extensions=TRUE))
<table>
<thead>
<tr>
<th align="left">aaa</th>
<th>bbb</th>
<th align="center">ccc</th>
<th>ddd</th>
<th align="right">eee</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">fff</td>
<td>ggg</td>
<td align="center">hhh</td>
<td>iii</td>
<td align="right">jjj</td>
</tr></tbody></table>

About
High Performance CommonMark and Github Markdown Rendering in R
docs.ropensci.org/commonmark/
Topics
cmarkcmark-gfmgfmmarkdown
Resources
Readme
License
Activity
Custom properties
Stars
102 stars
Watchers
7 watching
Forks
12 forks
Report repository
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Used by
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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commonmark
High Performance CommonMark and Github Markdown Rendering in R
CRAN_Status_BadgeCRAN RStudio mirror downloads
The CommonMark specification defines a rationalized version of markdown
syntax. This package uses the 'cmark' reference implementation for converting
markdown text into various formats including html, latex and groff man. In
addition it exposes the markdown parse tree in xml format. The latest version of
this package also adds support for Github extensions including tables, autolinks
and strikethrough text.
Documentation
Basic Markdown
library(commonmark)
md<-"## TestAn *example* text for the `commonmark` package."# Convert to Latex
cat(markdown_latex(md))
\subsection{Test}
An \emph{example} text for the \texttt{commonmark} package.

# Convert to HTML
cat(markdown_html(md))
<h2>Test</h2>
<p>An <em>example</em> text for the <code>commonmark</code> package.</p>

# Convert to 'groff' man 
cat(markdown_man(md))
.SS
Test
.PP
An \f[I]example\f[] text for the \f[C]commonmark\f[] package.

# Convert back to (normalized) markdown
cat(markdown_commonmark(md))
## Test
An *example* text for the `commonmark` package.

# The markdown parse tree
cat(markdown_xml(md))
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
<heading level="2">
<text>Test</text>
</heading>
<paragraph>
<text>An </text>
<emph>
<text>example</text>
</emph>
<text> text for the </text>
<code>commonmark</code>
<text> package.</text>
</paragraph>
</document>

Github Extensions
Commonmark includes several 'extensions' to enable features which are not (yet) part of the official specification. The current version of the commonmark R package offers 4 such extensions:
  • table support rendering of tables
  • strikethough via ~sometext~ syntax
  • autolink automatically turn URLs into hyperlinks
  • tagfilter blacklist html tags: titletextareastylexmpiframenoembednoframesscriptplaintext.
  • tasklist turns certain list items into checkboxes
These extensions were added by Github to support GitHub Flavored Markdown.
table<-'aaa | bbb | ccc | ddd | eee:-- | --- | :-: | --- | --:fff | ggg | hhh | iii | jjj'
cat(markdown_latex(table, extensions=TRUE))
\begin{table}
\begin{tabular}{llclr}
aaa & bbb & ccc & ddd & eee \\
fff & ggg & hhh & iii & jjj \\
\end{tabular}
\end{table}

cat(markdown_html(table, extensions=TRUE))
<table>
<thead>
<tr>
<th align="left">aaa</th>
<th>bbb</th>
<th align="center">ccc</th>
<th>ddd</th>
<th align="right">eee</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">fff</td>
<td>ggg</td>
<td align="center">hhh</td>
<td>iii</td>
<td align="right">jjj</td>
</tr></tbody></table>

About
High Performance CommonMark and Github Markdown Rendering in R
docs.ropensci.org/commonmark/
Topics
cmarkcmark-gfmgfmmarkdown
Resources
Readme
License
Activity
Custom properties
Stars
102 stars
Watchers
7 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
commonmark
High Performance CommonMark and Github Markdown Rendering in R
CRAN_Status_BadgeCRAN RStudio mirror downloads
The CommonMark specification defines a rationalized version of markdown
syntax. This package uses the 'cmark' reference implementation for converting
markdown text into various formats including html, latex and groff man. In
addition it exposes the markdown parse tree in xml format. The latest version of
this package also adds support for Github extensions including tables, autolinks
and strikethrough text.
Documentation
Basic Markdown
library(commonmark)
md<-"## TestAn *example* text for the `commonmark` package."# Convert to Latex
cat(markdown_latex(md))
\subsection{Test}
An \emph{example} text for the \texttt{commonmark} package.

# Convert to HTML
cat(markdown_html(md))
<h2>Test</h2>
<p>An <em>example</em> text for the <code>commonmark</code> package.</p>

# Convert to 'groff' man 
cat(markdown_man(md))
.SS
Test
.PP
An \f[I]example\f[] text for the \f[C]commonmark\f[] package.

# Convert back to (normalized) markdown
cat(markdown_commonmark(md))
## Test
An *example* text for the `commonmark` package.

# The markdown parse tree
cat(markdown_xml(md))
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
<heading level="2">
<text>Test</text>
</heading>
<paragraph>
<text>An </text>
<emph>
<text>example</text>
</emph>
<text> text for the </text>
<code>commonmark</code>
<text> package.</text>
</paragraph>
</document>

Github Extensions
Commonmark includes several 'extensions' to enable features which are not (yet) part of the official specification. The current version of the commonmark R package offers 4 such extensions:
  • table support rendering of tables
  • strikethough via ~sometext~ syntax
  • autolink automatically turn URLs into hyperlinks
  • tagfilter blacklist html tags: titletextareastylexmpiframenoembednoframesscriptplaintext.
  • tasklist turns certain list items into checkboxes
These extensions were added by Github to support GitHub Flavored Markdown.
table<-'aaa | bbb | ccc | ddd | eee:-- | --- | :-: | --- | --:fff | ggg | hhh | iii | jjj'
cat(markdown_latex(table, extensions=TRUE))
\begin{table}
\begin{tabular}{llclr}
aaa & bbb & ccc & ddd & eee \\
fff & ggg & hhh & iii & jjj \\
\end{tabular}
\end{table}

cat(markdown_html(table, extensions=TRUE))
<table>
<thead>
<tr>
<th align="left">aaa</th>
<th>bbb</th>
<th align="center">ccc</th>
<th>ddd</th>
<th align="right">eee</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">fff</td>
<td>ggg</td>
<td align="center">hhh</td>
<td>iii</td>
<td align="right">jjj</td>
</tr></tbody></table>

About
High Performance CommonMark and Github Markdown Rendering in R
docs.ropensci.org/commonmark/
Topics
cmarkcmark-gfmgfmmarkdown
Resources
Readme
License
Activity
Custom properties
Stars
102 stars
Watchers
7 watching
Forks
12 forks
Report repository
Releases
Packages
Used by
Contributors
Languages