Support Pandoc-style attributes for diagram code blocks - #50
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Add support for ```{.mermaid width=700} syntax and apply width/height
attributes as CSS max-width/max-height on the rendered container element.
Applies to mermaid, svg, and plantuml blocks.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Closes #49
Summary
{.lang}and{.lang key=value ...}(Pandoc-style) in addition to the plain```langformwidthandheightattributes and apply them asmax-width/max-heightinline CSS on the rendered container (<pre class="mermaid">,<div class="svg-container">,<div class="plantuml-container">)width=abc) are silently ignoredmermaid,svg,plantumlTest plan
{.mermaid width=700}renders withmax-width: 700px{.mermaid width=50%}renders withmax-width: 50%{.mermaid height=400}renders withmax-height: 400px{.mermaid width=700 height=400}renders both constraints{.mermaid width=abc}produces no style attribute{.mermaid}(no attrs) produces no style attribute{.svg width=300}applies style to svg-container{.plantuml width=600}applies style to plantuml-container```mermaidstill works unchanged🤖 Generated with Claude Code