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fix: pretty url toc highlighting #3028

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fix: pretty url toc highlighting #3028

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c99b81f
pretty url fix
bens-schreiber Feb 9, 2026
07cda66
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bens-schreiber Feb 9, 2026
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3 changes: 2 additions & 1 deletion crates/mdbook-html/front-end/templates/toc.js.hbs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,8 @@ class MDBookSidebarScrollbox extends HTMLElement {
link.href = path_to_root + href;
}
// The 'index' page is supposed to alias the first chapter in the book.
if (link.href === current_page
// Check both with and without the '.html' suffix to be robust against pretty URLs
if (link.href.replace(/\.html$/, '') === current_page.replace(/\.html$/, '')
|| i === 0
&& path_to_root === ''
&& current_page.endsWith('/index.html')) {
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