From 8af7c551ffb45e31d545373f88c78b38f660cf8d Mon Sep 17 00:00:00 2001
From: Aditya Telange <21258296+adityatelange@users.noreply.github.com>
Date: Sun, 13 Dec 2020 16:36:30 +0530
Subject: [PATCH] head: add support for Canonical URLs

cc:  #104

usage =>
  in site config.yml (used for home page only) =>
     canonical: ["https://www.example.com" , "https://blog.example.com"]
  in per-page vars =>
     canonical: ["https://www.example.com/page1" , "https://blog.example.com/pages/page1"]
---
 layouts/partials/head.html | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index 4a4d4665..408cee02 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -17,6 +17,10 @@
     {{- with .Site.Params.description }}{{ . }}{{- end }}{{- end }}{{- end -}}">
 <meta name="author" content="{{ (partial "author.html" . ) }}">
 <link rel="canonical" href="{{ .Permalink }}" />
+{{- $canonical := cond (.IsHome) .Site.Params.canonical .Params.canonical }}
+{{- range $canonical }}
+<link rel="canonical" href="{{ trim . " " }}" />
+{{- end }}
 {{- if .Site.Params.analytics.google.SiteVerificationTag }}
 <meta name="google-site-verification" content="{{ .Site.Params.analytics.google.SiteVerificationTag }}" />
 {{- end}}