git subrepo clone --branch=0.30.3 https://github.com/commonmark/cmark.git deps/cmark

subrepo:
  subdir:   "deps/cmark"
  merged:   "5ba25ff"
upstream:
  origin:   "https://github.com/commonmark/cmark.git"
  branch:   "0.30.3"
  commit:   "5ba25ff"
git-subrepo:
  version:  "0.4.6"
  commit:   "d4444b563"

deps/cmark/man/man1/cmark.1

@@ -0,0 +1,73 @@
+.TH "cmark" "1" "February 11, 2020" "LOCAL" "General Commands Manual"
+.SH "NAME"
+\fBcmark\fR
+\- convert CommonMark formatted text to HTML
+.SH "SYNOPSIS"
+.HP 6n
+\fBcmark\fR
+[options]
+file*
+.SH "DESCRIPTION"
+\fBcmark\fR
+converts Markdown formatted plain text to either HTML, groff man,
+CommonMark XML, LaTeX, or CommonMark, using the conventions
+described in the CommonMark spec.  It reads input from \fIstdin\fR
+or the specified files (concatenating their contents) and writes
+output to \fIstdout\fR.
+.SH "OPTIONS"
+.TP 12n
+.B \-\-to, \-t \f[I]FORMAT\f[]
+Specify output format (\f[C]html\f[], \f[C]man\f[], \f[C]xml\f[],
+\f[C]latex\f[], \f[C]commonmark\f[]).
+.TP 12n
+.B \-\-width \f[I]WIDTH\f[]
+Specify a column width to which to wrap the output. For no wrapping, use
+the value 0 (the default).  This option currently only affects the
+commonmark, latex, and man renderers.
+.TP 12n
+.B \-\-hardbreaks
+Render soft breaks (newlines inside paragraphs in the CommonMark source)
+as hard line breaks in the target format.  If this option is specified,
+hard wrapping is disabled for CommonMark output, regardless of the value
+given with \-\-width.
+.TP 12n
+.B \-\-nobreaks
+Render soft breaks as spaces.  If this option is specified,
+hard wrapping is disabled for all output formats, regardless of the value
+given with \-\-width.
+.TP 12n
+.B \-\-sourcepos
+Include source position attribute.
+.TP 12n
+.B \-\-validate-utf8
+Validate UTF-8, replacing illegal sequences with U+FFFD.
+.TP 12n
+.B \-\-smart
+Use smart punctuation.  Straight double and single quotes will
+be rendered as curly quotes, depending on their position.
+\f[C]\-\-\f[] will be rendered as an en-dash.
+\f[C]\-\-\-\f[] will be rendered as an em-dash.
+\f[C]...\f[] will be rendered as ellipses.
+.TP 12n
+.B \-\-safe
+Omit raw HTML and potentially dangerous URLs (default).
+Raw HTML is replaced by a placeholder comment
+and potentially dangerous URLs are replaced by empty strings.
+Potentially dangerous URLs are those that begin with `javascript:`,
+`vbscript:`, `file:`, or `data:` (except for `image/png`,
+`image/gif`, `image/jpeg`, or `image/webp` mime types).
+.TP 12n
+.B \-\-unsafe
+Render raw HTML or potentially dangerous URLs, overriding
+the default (\-\-safe) behavior.
+.TP 12n
+.B \-\-help
+Print usage information.
+.TP 12n
+.B \-\-version
+Print version.
+.SH "AUTHORS"
+John MacFarlane, Vicent Marti, Kārlis Gaņģis, Nick Wellnhofer.
+.SH "SEE ALSO"
+.PP
+CommonMark spec:  \f[C]https://spec.commonmark.org\f[].