@phoenix-plugin-registry/brackets-markdown-preview/tests/test-highlight-html-fragment.html

Markdown live preview incl. detached window, code syntax highlighting, output themes, adaptive preview width, graphical checkboxes, activation on start...

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<pre><code>
function _updateSettings() {
    console.log("_updateSettings()");
    // if using GFM while the adaptive width mode is active, then disable the "break" option.
    var useGFM = PreviewPreferences.useGFM;
    var useAdaptiveWidth = PreviewPreferences.adaptiveWidth;
    var useBreaks = useGFM && !useAdaptiveWidth;
    marked.setOptions({
        breaks: useBreaks,
        gfm: useGFM
    });
    // Re-render 
    _loadDoc(currentDoc);
}        
</code></pre>