fletcher/MultiMarkdown-6
1
1
Fork 0
mirror of https://github.com/fletcher/MultiMarkdown-6.git synced 2024-10-04 18:47:31 +03:00
Code Issues Projects Releases Wiki Activity
119313e6d7
MultiMarkdown-6/QuickStart.fodt
Fletcher T. Penney d47d82c428 ADDED: Update QuickStart and EPUB code
2017-03-13 15:29:06 -04:00

589 lines
41 KiB
XML
Raw Blame History

<?xml version="1.0" encoding="UTF-8"?>
<office:document xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0"
xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0"
xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0"
xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0"
xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0"
xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0"
xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0"
xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0"
xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0"
xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0"
xmlns:math="http://www.w3.org/1998/Math/MathML"
xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0"
xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0"
xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0"
xmlns:ooo="http://openoffice.org/2004/office"
xmlns:ooow="http://openoffice.org/2004/writer"
xmlns:oooc="http://openoffice.org/2004/calc"
xmlns:dom="http://www.w3.org/2001/xml-events"
xmlns:xforms="http://www.w3.org/2002/xforms"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:rpt="http://openoffice.org/2005/report"
xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2"
xmlns:xhtml="http://www.w3.org/1999/xhtml"
xmlns:grddl="http://www.w3.org/2003/g/data-view#"
xmlns:tableooo="http://openoffice.org/2009/table"
xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0"
xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0"
xmlns:css3t="http://www.w3.org/TR/css3-text/"
office:version="1.2"
grddl:transformation="http://docs.oasis-open.org/office/1.2/xslt/odf2rdf.xsl"
office:mimetype="application/vnd.oasis.opendocument.text">
<office:font-face-decls>
<style:font-face style:name="Courier New" svg:font-family="'Courier New'"
style:font-adornments="Regular"
style:font-family-generic="modern"
style:font-pitch="fixed"/>
</office:font-face-decls>
<office:styles>
<style:style style:name="Standard" style:family="paragraph" style:class="text">
<style:paragraph-properties fo:margin-top="0in" fo:margin-bottom="0.15in" fo:text-align="justify" style:justify-single-word="false"/>
</style:style>
<style:style style:name="Preformatted_20_Text" style:display-name="Preformatted Text"
style:family="paragraph"
style:parent-style-name="Standard"
style:class="html">
<style:paragraph-properties fo:margin-top="0in" fo:margin-bottom="0in" fo:text-align="start"
style:justify-single-word="false"/>
<style:text-properties style:font-name="Courier New" fo:font-size="11pt"
style:font-name-asian="Courier New"
style:font-size-asian="11pt"
style:font-name-complex="Courier New"
style:font-size-complex="11pt"/>
</style:style>
<style:style style:name="Source_20_Text" style:display-name="Source Text"
style:family="text">
<style:text-properties style:font-name="Courier New" style:font-name-asian="Courier New"
style:font-name-complex="Courier New"
fo:font-size="11pt"/>
</style:style>
<style:style style:name="List" style:family="paragraph"
style:parent-style-name="Standard"
style:class="list">
<style:paragraph-properties fo:text-align="start" style:justify-single-word="false"/>
<style:text-properties style:font-size-asian="12pt"/>
</style:style>
<style:style style:name="Quotations" style:family="paragraph"
style:parent-style-name="Standard"
style:class="html">
<style:paragraph-properties fo:margin-left="0.3937in" fo:margin-right="0.3937in" fo:margin-top="0in"
fo:margin-bottom="0.1965in"
fo:text-align="justify" style:justify-single-word="false" fo:text-indent="0in"
style:auto-text-indent="false"/>
</style:style>
<style:style style:name="Table_20_Heading" style:display-name="Table Heading"
style:family="paragraph"
style:parent-style-name="Table_20_Contents"
style:class="extra">
<style:paragraph-properties fo:text-align="center" style:justify-single-word="false"
text:number-lines="false"
text:line-number="0"/>
<style:text-properties fo:font-weight="bold" style:font-weight-asian="bold"
style:font-weight-complex="bold"/>
</style:style>
<style:style style:name="Horizontal_20_Line" style:display-name="Horizontal Line"
style:family="paragraph"
style:parent-style-name="Standard"
style:class="html">
<style:paragraph-properties fo:margin-top="0in" fo:margin-bottom="0.1965in"
style:border-line-width-bottom="0.0008in 0.0138in 0.0008in"
fo:padding="0in"
fo:border-left="none"
fo:border-right="none"
fo:border-top="none"
fo:border-bottom="0.0154in double #808080"
text:number-lines="false"
text:line-number="0"
style:join-border="false"/>
<style:text-properties fo:font-size="6pt" style:font-size-asian="6pt" style:font-size-complex="6pt"/>
</style:style>
<style:style style:name="Footnote_20_anchor" style:display-name="Footnote anchor" style:family="text"> <style:text-properties style:text-position="super 58%"/> </style:style>
<style:style style:name="TOC_Item" style:family="paragraph" style:parent-style-name="Standard">
<style:paragraph-properties>
<style:tab-stops>
<style:tab-stop style:position="6.7283in" style:type="right" style:leader-style="dotted" style:leader-text="."/>
</style:tab-stops>
</style:paragraph-properties>
</style:style>
<text:notes-configuration text:note-class="footnote" text:default-style-name="Footnote" text:citation-style-name="Footnote_20_Symbol" text:citation-body-style-name="Footnote_20_anchor" text:master-page-name="Footnote" style:num-format="a" text:start-value="0" text:footnotes-position="page" text:start-numbering-at="page"/>
<text:notes-configuration text:note-class="endnote" text:default-style-name="Endnote" text:citation-style-name="Endnote_20_Symbol" text:citation-body-style-name="Endnote_20_anchor" text:master-page-name="Endnote" style:num-format="1" text:start-value="0"/>
</office:styles>
<office:automatic-styles> <style:style style:name="MMD-Italic" style:family="text">
<style:text-properties fo:font-style="italic" style:font-style-asian="italic"
style:font-style-complex="italic"/>
</style:style>
<style:style style:name="MMD-Bold" style:family="text">
<style:text-properties fo:font-weight="bold" style:font-weight-asian="bold"
style:font-weight-complex="bold"/>
</style:style>
<style:style style:name="MMD-Superscript" style:family="text">
<style:text-properties style:text-position="super 58%"/>
</style:style>
<style:style style:name="MMD-Subscript" style:family="text">
<style:text-properties style:text-position="sub 58%"/>
</style:style>
<style:style style:name="Strike" style:family="text">
<style:text-properties style:text-line-through-style="solid" />
</style:style>
<style:style style:name="Underline" style:family="text">
<style:text-properties style:text-underline-style="solid" style:text-underline-color="font-color"/>
</style:style>
<style:style style:name="Highlight" style:family="text">
<style:text-properties fo:background-color="#FFFF00" />
</style:style>
<style:style style:name="Comment" style:family="text">
<style:text-properties fo:color="#0000BB" />
</style:style>
<style:style style:name="MMD-Table" style:family="paragraph" style:parent-style-name="Standard">
<style:paragraph-properties fo:margin-top="0in" fo:margin-bottom="0.05in"/>
</style:style>
<style:style style:name="MMD-Table-Center" style:family="paragraph" style:parent-style-name="MMD-Table">
<style:paragraph-properties fo:text-align="center" style:justify-single-word="false"/>
</style:style>
<style:style style:name="MMD-Table-Right" style:family="paragraph" style:parent-style-name="MMD-Table">
<style:paragraph-properties fo:text-align="right" style:justify-single-word="false"/>
</style:style>
<style:style style:name="P2" style:family="paragraph" style:parent-style-name="Standard"
style:list-style-name="L2">
<style:paragraph-properties fo:text-align="start" style:justify-single-word="false"/>
</style:style>
<style:style style:name="fr1" style:family="graphic" style:parent-style-name="Frame">
<style:graphic-properties style:print-content="true" style:vertical-pos="top"
style:vertical-rel="baseline"
fo:padding="0in"
fo:border="none"
style:shadow="none"/>
</style:style>
<style:style style:name="P1" style:family="paragraph" style:parent-style-name="Standard"
style:list-style-name="L1"/>
<text:list-style style:name="L1">
<text:list-level-style-bullet text:level="1" text:style-name="Numbering_20_Symbols" style:num-suffix="." text:bullet-char="•">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.5in" fo:text-indent="-0.25in" fo:margin-left="0.5in"/>
</style:list-level-properties>
</text:list-level-style-bullet>
<text:list-level-style-bullet text:level="2" text:style-name="Numbering_20_Symbols" style:num-suffix="." text:bullet-char="◦">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.75in" fo:text-indent="-0.25in" fo:margin-left="0.75in"/>
</style:list-level-properties>
</text:list-level-style-bullet>
<text:list-level-style-bullet text:level="3" text:style-name="Numbering_20_Symbols" style:num-suffix="." text:bullet-char="▪">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1in" fo:text-indent="-0.25in" fo:margin-left="1in"/>
</style:list-level-properties>
</text:list-level-style-bullet>
<text:list-level-style-number text:level="4" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1.25in" fo:text-indent="-0.25in" fo:margin-left="1.25in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="5" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1.5in" fo:text-indent="-0.25in" fo:margin-left="1.5in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="6" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1.75in" fo:text-indent="-0.25in" fo:margin-left="1.75in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="7" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="2in" fo:text-indent="-0.25in" fo:margin-left="2in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="8" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="2.25in" fo:text-indent="-0.25in" fo:margin-left="2.25in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="9" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="2.5in" fo:text-indent="-0.25in" fo:margin-left="2.5in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="10" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="2.75in" fo:text-indent="-0.25in" fo:margin-left="2.75in"/>
</style:list-level-properties>
</text:list-level-style-number>
</text:list-style>
<text:list-style style:name="L2">
<text:list-level-style-number text:level="1" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.5in" fo:text-indent="-0.25in" fo:margin-left="0.5in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="2" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.75in" fo:text-indent="-0.25in" fo:margin-left="0.75in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="3" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1in" fo:text-indent="-0.25in" fo:margin-left="1in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="4" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1.25in" fo:text-indent="-0.25in" fo:margin-left="1.25in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="5" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1.5in" fo:text-indent="-0.25in" fo:margin-left="1.5in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="6" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1.75in" fo:text-indent="-0.25in" fo:margin-left="1.75in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="7" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="2in" fo:text-indent="-0.25in" fo:margin-left="2in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="8" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="2.25in" fo:text-indent="-0.25in" fo:margin-left="2.25in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="9" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="2.5in" fo:text-indent="-0.25in" fo:margin-left="2.5in"/>
</style:list-level-properties>
</text:list-level-style-number>
<text:list-level-style-number text:level="10" text:style-name="Standard" style:num-suffix="." style:num-format="1">
<style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
<style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="2.75in" fo:text-indent="-0.25in" fo:margin-left="2.75in"/>
</style:list-level-properties>
</text:list-level-style-number>
</text:list-style>
</office:automatic-styles>
<office:master-styles>
<style:master-page style:name="Endnote" >
<style:header><text:h text:outline-level="2">Bibliography</text:h></style:header></style:master-page>
<style:master-page style:name="Footnote" style:page-layout-name="pm2"/>
</office:master-styles>
<office:meta>
<dc:title>MultiMarkdown v6 Quick Start Guide</dc:title>
<meta:user-defined meta:name="author">Fletcher T. Penney</meta:user-defined>
<meta:user-defined meta:name="version">6.0-b</meta:user-defined>
<meta:user-defined meta:name="uuid">0d6313fa-9135-477e-9c14-7d62c1977833</meta:user-defined>
</office:meta>
<office:body>
<office:text>
<text:table-of-content text:style-name="Sect1" text:protected="true" text:name="Table of Contents1">
<text:table-of-content-source text:outline-level="10">
<text:index-title-template text:style-name="Contents_20_Heading">Table of Contents</text:index-title-template>
</text:table-of-content-source>
<text:index-body>
<text:index-title text:style-name="Sect1" text:name="Table of Contents1_Head">
<text:p text:style-name="Contents_20_Heading">Table of Contents</text:p>
</text:index-title>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#introduction" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Introduction <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#performance" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Performance <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#parsetree" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Parse Tree <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#features" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Features <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#abbreviationsoracronyms" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Abbreviations (Or Acronyms) <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#citations" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Citations <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#criticmarkup" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">CriticMarkup <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#emphandstrong" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Emph and Strong <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#epub3support" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">EPUB 3 Support <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#fencedcodeblocks" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Fenced Code Blocks <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#glossaryterms" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Glossary Terms <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#internationalization" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Internationalization <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#metadata" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Metadata <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#tableofcontents" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Table of Contents <text:tab/>1</text:a></text:p>
<text:p text:style-name="TOC_Item"><text:a xlink:type="simple" xlink:href="#futuresteps" text:style-name="Index_20_Link" text:visited-style-name="Index_20_Link">Future Steps <text:tab/>1</text:a></text:p>
</text:index-body>
</text:table-of-content>
<text:h text:outline-level="3"><text:bookmark text:name="introduction"/>Introduction </text:h>
<text:p text:style-name="Standard">Version: 6.0-b</text:p>
<text:p text:style-name="Standard">This document serves as a description of MultiMarkdown (MMD) v6, as well as a sample
document to demonstrate the various features. Specifically, differences from
MMD v5 will be pointed out.</text:p>
<text:h text:outline-level="3"><text:bookmark text:name="performance"/>Performance </text:h>
<text:p text:style-name="Standard">A big motivating factor leading to the development of MMD v6 was
performance. When MMD first migrated from Perl to C (based on <text:a xlink:type="simple" xlink:href="https://github.com/jgm/peg-markdown">peg-
markdown</text:a>), it was among the fastest
Markdown parsers available. That was many years ago, and the &#8220;competition&#8221;
has made a great deal of progress since that time.</text:p>
<text:p text:style-name="Standard">When developing MMD v6, one of my goals was to keep MMD at least in the
ballpark of the fastest processors. Of course, being <text:span text:style-name="MMD-Italic">the</text:span> fastest would be
fantastic, but I was more concerned with ensuring that the code was easily
understood, and easily updated with new features in the future.</text:p>
<text:p text:style-name="Standard">MMD v3 &#8211; v5 used a PEG<text:note text:id="gn1" text:note-class="glossary"><text:note-body><text:p text:style-name="Footnote">Parsing Expression Grammar <text:a xlink:type="simple" xlink:href="https://en.wikipedia.org/wiki/Parsing_expression_grammar">https://en.wikipedia.org/wiki/Parsing_expression_grammar</text:a></text:p></text:note-body></text:note> to handle the parsing. This made it easy to
understand the relationship between the MMD grammar and the parsing code,
since they were one and the same. However, the parsing code generated by
the parsers was not particularly fast, and was prone to troublesome edge
cases with terrible performance characteristics.</text:p>
<text:p text:style-name="Standard">The first step in MMD v6 parsing is to break the source text into a series
of tokens, which may consist of plain text, whitespace, or special characters
such as &#8216;*&#8217;, &#8216;[&#8217;, etc. This chain of tokens is then used to perform the
actual parsing.</text:p>
<text:p text:style-name="Standard">MMD v6 divides the parsing into two separate phases, which actually fits
more with Markdown&#8217;s design philosophically.</text:p>
<text:list text:style-name="L2">
<text:list-item>
<text:p text:style-name="Standard">Block parsing consists of identifying the &#8220;type&#8221; of each line of the
source text, and grouping the lines into blocks (e.g. paragraphs, lists,
blockquotes, etc.) Some blocks are a single line (e.g. ATX headers), and
others can be many lines long. The block parsing in MMD v6 is handled
by a parser generated by <text:a xlink:type="simple" xlink:href="http://www.hwaci.com/sw/lemon/">lemon</text:a>. This
parser allows the block structure to be more readily understood by
non-programmers, but the generated parser is still fast.</text:p></text:list-item>
<text:list-item>
<text:p text:style-name="Standard">Span parsing consists of identifying Markdown/MMD structures that occur
inside of blocks, such as links, images, strong, emph, etc. Most of these
structures require matching pairs of tokens to specify where the span starts
and where it ends. Most of these spans allow arbitrary levels of nesting as
well. This made parsing them correctly in the PEG-based code difficult and
slow. MMD v6 uses a different approach that is accurate and has good
performance characteristics even with edge cases. Basically, it keeps a stack
of each &#8220;opening&#8221; token as it steps through the token chain. When a &#8220;closing&#8221;
token is found, it is paired with the most recent appropriate opener on the
stack. Any tokens in between the opener and closer are removed, as they are
not able to be matched any more. To avoid unnecessary searches for non-
existent openers, the parser keeps track of which opening tokens have been
discovered. This allows the parser to continue moving forwards without having
to go backwards and re-parse any previously visited tokens.</text:p></text:list-item>
</text:list>
<text:p text:style-name="Standard">The result of this redesigned MMD parser is that it can parse short
documents more quickly than <text:a xlink:type="simple" xlink:href="http://commonmark.org/">CommonMark</text:a>, and takes
only 15% &#8211; 20% longer to parse long documents. I have not delved too deeply
into this, but I presume that CommonMark has a bit more &#8220;set-up&#8221; time that
becomes expensive when parsing a short document (e.g. a paragraph or two). But
this cost becomes negligible when parsing longer documents (e.g. file sizes of
1 MB). So depending on your use case, CommonMark may well be faster than
MMD, but we&#8217;re talking about splitting hairs here&#8230;. Recent comparisons
show MMD v6 taking approximately 4.37 seconds to parse a 108 MB file
(approximately 24.8 MB/second), and CommonMark took 3.72 seconds for the same
file (29.2 MB/second). For comparison, MMD v5.4 took approximately 94
second for the same file (1.15 MB/second).</text:p>
<text:p text:style-name="Standard">For a more realistic file of approx 28 kb (the source of the Markdown Syntax
web page), both MMD and CommonMark parse it too quickly to accurately
measure. In fact, it requires a file consisting of the original file copied
32 times over (0.85 MB) before <text:span text:style-name="Source_20_Text">/usr/bin/env time</text:span> reports a time over the
minimum threshold of 0.01 seconds for either program.</text:p>
<text:p text:style-name="Standard">There is still potentially room for additional optimization in MMD.
However, even if I can&#8217;t close the performance gap with CommonMark on longer
files, the additional features of MMD compared with Markdown in addition to
the increased legibility of the source code of MMD (in my biased opinion
anyway) make this project worthwhile.</text:p>
<text:h text:outline-level="3"><text:bookmark text:name="parsetree"/>Parse Tree </text:h>
<text:p text:style-name="Standard">MMD v6 performs its parsing in the following steps:</text:p>
<text:list text:style-name="L2">
<text:list-item>
<text:p text:style-name="Standard">Start with a null-terminated string of source text (C style string)</text:p></text:list-item>
<text:list-item>
<text:p text:style-name="Standard">Lex string into token chain</text:p></text:list-item>
<text:list-item>
<text:p text:style-name="Standard">Parse token chain into blocks</text:p></text:list-item>
<text:list-item>
<text:p text:style-name="Standard">Parse tokens within each block into span level structures (e.g. strong,
emph, etc.)</text:p></text:list-item>
<text:list-item>
<text:p text:style-name="Standard">Export the token tree into the desired output format (e.g. HTML, LaTeX,
etc.) and return the resulting C style string</text:p>
<text:p text:style-name="Standard"><text:span text:style-name="MMD-Bold">OR</text:span></text:p></text:list-item>
<text:list-item>
<text:p text:style-name="Standard">Use the resulting token tree for your own purposes.</text:p></text:list-item>
</text:list>
<text:p text:style-name="Standard">The token tree (AST<text:note text:id="gn2" text:note-class="glossary"><text:note-body><text:p text:style-name="Footnote">Abstract Syntax Tree <text:a xlink:type="simple" xlink:href="https://en.wikipedia.org/wiki/Abstract_syntax_tree">https://en.wikipedia.org/wiki/Abstract_syntax_tree</text:a></text:p></text:note-body></text:note>) includes starting offsets and length of each token,
allowing you to use MMD as part of a syntax highlighter. MMD v5 did not
have this functionality in the public version, in part because the PEG parsers
used did not provide reliable offset positions, requiring a great deal of
effort when I adapted MMD for use in <text:a xlink:type="simple" xlink:href="http://multimarkdown.com/">MultiMarkdown
Composer</text:a>.</text:p>
<text:p text:style-name="Standard">These steps are managed using the <text:span text:style-name="Source_20_Text">mmd_engine</text:span> &#8220;object&#8221;. An individual
<text:span text:style-name="Source_20_Text">mmd_engine</text:span> cannot be used by multiple threads simultaneously, so if
libMultiMarkdown is to be used in a multithreaded program, a separate
<text:span text:style-name="Source_20_Text">mmd_engine</text:span> should be created for each thread. Alternatively, just use the
slightly more abstracted <text:span text:style-name="Source_20_Text">mmd_convert_string()</text:span> function that handles creating
and destroying the <text:span text:style-name="Source_20_Text">mmd_engine</text:span> automatically.</text:p>
<text:h text:outline-level="3"><text:bookmark text:name="features"/>Features </text:h>
<text:h text:outline-level="4"><text:bookmark text:name="abbreviationsoracronyms"/>Abbreviations (Or Acronyms) </text:h>
<text:p text:style-name="Standard">This file includes the use of MMD as an abbreviation for MultiMarkdown. The
abbreviation will be expanded on the first use, and the shortened form will be
used on subsequent occurrences.</text:p>
<text:p text:style-name="Standard">Abbreviations can be specified using inline or reference syntax. The inline
variant requires that the abbreviation be wrapped in parentheses and
immediately follows the <text:span text:style-name="Source_20_Text">&gt;</text:span>.</text:p>
<text:p text:style-name="Preformatted Text">[>MMD] is an abbreviation. So is [>(MD) Markdown].<text:line-break/><text:line-break/>[>MMD]: MultiMarkdown<text:line-break/></text:p>
<text:p text:style-name="Standard">There is also a &#8220;shortcut&#8221; method for abbreviations that is similar to the
approach used in prior versions of MMD. You specify the definition for the
abbreviation in the usual manner, but MMD will automatically identify each
instance where the abbreviation is used and substitute it automatically. In
this case, the abbreviation is limited to a more basic character set which
includes letters, numbers, periods, and hyphens, but not much else. For more
complex abbreviations, you must explicitly mark uses of the abbreviation.</text:p>
<text:h text:outline-level="4"><text:bookmark text:name="citations"/>Citations </text:h>
<text:p text:style-name="Standard">Citations can be specified using an inline syntax, just like inline footnotes.</text:p>
<text:h text:outline-level="4"><text:bookmark text:name="criticmarkup"/>CriticMarkup </text:h>
<text:p text:style-name="Standard">MMD v6 has improved support for <text:a xlink:type="simple" xlink:href="http://criticmarkup.com/">CriticMarkup</text:a>, both in terms of parsing, and
in terms of support for each output format. You can <text:span text:style-name="Underline">insert text</text:span>,
<text:span text:style-name="Strike">delete text</text:span>, substitute <text:span text:style-name="Strike">one thing</text:span><text:span text:style-name="Underline">for another</text:span>, <text:span text:style-name="Highlight">highlight text</text:span>,
and <text:span text:style-name="Comment">leave comments</text:span> in the text.</text:p>
<text:p text:style-name="Standard">If you don&#8217;t specify any command line options, then MMD will apply special
formatting to the CriticMarkup formatting as in the preceding paragraph.
Alternatively, you can use the <text:span text:style-name="Source_20_Text">-a\--accept</text:span> or <text:span text:style-name="Source_20_Text">-r\--reject</text:span> options to cause
MMD to accept or reject, respectively, the proposed changes within the CM
markup. When doing this, CM will work across blank lines. Without either of
these two options, then CriticMarkup that spans a blank line is not recognized
as such. I working on options for this for the future.</text:p>
<text:h text:outline-level="4"><text:bookmark text:name="emphandstrong"/>Emph and Strong </text:h>
<text:p text:style-name="Standard">The basics of emphasis and strong emphasis are unchanged, but the parsing
engine has been improved to be more accurate, particularly in various edge
cases where proper parsing can be difficult.</text:p>
<text:h text:outline-level="4"><text:bookmark text:name="epub3support"/>EPUB 3 Support </text:h>
<text:p text:style-name="Standard">MMD v6 now provides support for direct creation of <text:a xlink:type="simple" xlink:href="https://en.wikipedia.org/wiki/EPUB">EPUB 3</text:a> files. Previously
a separate tool was required to create EPUB files from MMD. It&#8217;s now built-
in. Currently, EPUB 3 files are built using the usual HTML 5 output. No
extra CSS is applied, so the default from the reader will be used. Images are
not yet supported, but are planned for the future.</text:p>
<text:p text:style-name="Standard">EPUB files can be highly customized with other tools, and I recommend doing
that for production quality files. For example, apparently performance is
improved when the content is divided into multiple files (e.g. one file per
chapter). MMD creates EPUB 3 files using a single file. Tools like <text:a xlink:type="simple" xlink:href="https://sigil-ebook.com/">Sigil</text:a>
are useful for improving your EPUB files, and I recommend doing that.</text:p>
<text:p text:style-name="Standard">Not all EPUB readers support v3 files. I don&#8217;t plan on adding support for
older versions of the EPUB format, but other tools can convert to other
document formats you need. Same goes for Amazon&#8217;s ebook formats &#8211; the
<text:a xlink:type="simple" xlink:href="https://calibre-ebook.com/">Calibre</text:a> program can also be used to interconvert between formats.</text:p>
<text:p text:style-name="Standard">**NOTE: Because EPUB documents are binary files, MMD only creates them when
**run in batch mode (using the <text:span text:style-name="Source_20_Text">-b\--batch</text:span> options). Otherwise, it simply
**outputs the HTML 5 file that would serve as the primary content for the
**EPUB.</text:p>
<text:h text:outline-level="4"><text:bookmark text:name="fencedcodeblocks"/>Fenced Code Blocks </text:h>
<text:p text:style-name="Standard">Fenced code blocks are fundamentally the same as MMD v5, except:</text:p>
<text:list text:style-name="L2">
<text:list-item>
<text:p text:style-name="Standard">The leading and trailing fences can be 3, 4, or 5 backticks in length. That
should be sufficient to account for complex documents without requiring a more
complex parser.</text:p></text:list-item>
<text:list-item>
<text:p text:style-name="Standard">If there is no trailing fence, then everything after the leading fence is
considered to be part of the code block.</text:p></text:list-item>
</text:list>
<text:h text:outline-level="4"><text:bookmark text:name="glossaryterms"/>Glossary Terms </text:h>
<text:p text:style-name="Standard">If there are terms in your document you wish to define in a glossary<text:note text:id="gn3" text:note-class="glossary"><text:note-body><text:p text:style-name="Footnote">The
glossary collects information about important terms used in your document</text:p></text:note-body></text:note> at
the end of your document, you can define them using the glossary syntax.</text:p>
<text:p text:style-name="Standard">Glossary terms can be specified using inline or reference syntax. The inline
variant requires that the abbreviation be wrapped in parentheses and
immediately follows the <text:span text:style-name="Source_20_Text">?</text:span>.</text:p>
<text:p text:style-name="Preformatted Text">[?(glossary) The glossary collects information about important<text:line-break/>terms used in your document] is a glossary term.<text:line-break/><text:line-break/>[?glossary] is also a glossary term.<text:line-break/><text:line-break/>[?glossary]: The glossary collects information about important<text:line-break/>terms used in your document<text:line-break/></text:p>
<text:p text:style-name="Standard">Much like abbreviations, there is also a &#8220;shortcut&#8221; method that is similar to
the approach used in prior versions of MMD. You specify the definition for
the glossary term in the usual manner, but MMD will automatically identify
each instance where the term is used and substitute it automatically. In this
case, the term is limited to a more basic character set which includes
letters, numbers, periods, and hyphens, but not much else. For more complex
glossary terms, you must explicitly mark uses of the term.</text:p>
<text:h text:outline-level="4"><text:bookmark text:name="internationalization"/>Internationalization </text:h>
<text:p text:style-name="Standard">MMD v6 includes support for substituting certain text phrases in other
languages. This only affects the HTML format.</text:p>
<text:h text:outline-level="4"><text:bookmark text:name="metadata"/>Metadata </text:h>
<text:p text:style-name="Standard">Metadata in MMD v6 includes new support for LaTeX &#8211; the <text:span text:style-name="Source_20_Text">latex config</text:span> key
allows you to automatically setup of multiple <text:span text:style-name="Source_20_Text">latex include</text:span> files at once.
The default setups that I use would typically consist of one LaTeX file to be
included at the top of the file, one to be included right at the beginning of
the document, and one to be included at the end of the document. If you want
to specify the latex files separately, you can use <text:span text:style-name="Source_20_Text">latex leader</text:span>, <text:span text:style-name="Source_20_Text">latex<text:line-break/>begin</text:span>, and <text:span text:style-name="Source_20_Text">latex footer</text:span>.</text:p>
<text:h text:outline-level="4"><text:bookmark text:name="tableofcontents"/>Table of Contents </text:h>
<text:p text:style-name="Standard">By placing <text:span text:style-name="Source_20_Text">{{TOC}}</text:span> in your document, you can insert an automatically
generated Table of Contents in your document. As of MMD v6, the native
Table of Contents functionality is used when exporting to LaTeX or
OpenDocument formats.</text:p>
<text:h text:outline-level="3"><text:bookmark text:name="futuresteps"/>Future Steps </text:h>
<text:p text:style-name="Standard">Some features I plan to implement at some point:</text:p>
<text:list text:style-name="L2">
<text:list-item>
<text:p text:style-name="Standard">OPML export support is not available in v6. I plan on adding improved
support for this at some point. I was hoping to be able to re-use the
existing v6 parser but it might be simpler to use the approach from v5 and
earlier, which was to have a separate parser tuned to only identify headers
and &#8220;stuff between headers&#8221;.</text:p></text:list-item>
<text:list-item>
<text:p text:style-name="Standard">Improved EPUB support. Currently, EPUB support is provided by a separate
<text:a xlink:type="simple" xlink:href="https://github.com/fletcher/MMD-ePub">tool</text:a>. At some point, I would like to
better integrate this into MMD itself.</text:p></text:list-item>
</text:list>
</office:text>
</office:body>
</office:document>
Reference in New Issue View Git Blame Copy Permalink