Add hreflang alternate links to sitemap.xml#99
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Closes #83. When enabled, <link rel="alternate" hreflang="..." href="..."> tags found on each page are added to that page's sitemap entry as <xhtml:link> alternates, following Google's localized-versions sitemap format.
Following the same opt-out convention as noindex/canonical handling. Use --no-hreflang to disable adding <xhtml:link> alternates read from <link rel="alternate" hreflang="..."> tags. Verified pages without a hreflang attribute (no <link> tags, stylesheet/canonical/RSS alternate links) produce no <xhtml:link> output, so there's no regression for sites that don't use hreflang.
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Summary
<link rel="alternate" hreflang="..." href="...">tags are now read and added to that page's sitemap entry as<xhtml:link rel="alternate" hreflang="..." href="..."/>, following Google's localized-versions sitemap formatxmlns:xhtmlnamespace to the sitemap header, required for<xhtml:link>elements--no-hreflangto disable itTest plan
hreflangalternate links and confirmed the correct<xhtml:link>entries appear in the output sitemaphreflangattribute (no<link>tags at all,rel="stylesheet",rel="canonical", andrel="alternate"RSS links withouthreflang) produce no<xhtml:link>output — no regression for sites that don't use hreflang--no-hreflangdisables the feature entirelyGenerated by Claude Code