add meta elements and fix title

CHANGELOG.md

@@ -1 +1,5 @@
-- initial release
+- ENHANCEMENT
+  - allow setting some common meta elements e.g. description and authors
+  - prevent duplicate title on the start page
+- BUGFIX
+  - dont display duplicate title on home page

exampleSite/content/posts/how-to-use.md

@@ -128,6 +128,14 @@ enableGitInfo = true
   [geekblogContentLicense]
     name = "CC BY-SA 4.0"
     link = "https://creativecommons.org/licenses/by-sa/4.0/"
+
+  # (Optional, default none) Default meta description used for the start page and as a fallback for
+  # every site without an own description.
+  geekblogDescription = "This is my personal blog about tech."
+
+  # (Optional, default none) Default meta keywords used for the start page and as a fallback for
+  # every site without own keywords. Note: Meta keywords seems to be ignored by most modern search engines.
+  geekblogKeywords =
 ```
 
 {{< /tab >}}
@@ -231,6 +239,14 @@ params:
   geekblogContentLicense:
     name: CC BY-SA 4.0
     link: https://creativecommons.org/licenses/by-sa/4.0/
+
+  # (Optional, default none) Default meta description used for the start page and as a fallback for
+  # every site without an own description.
+  geekblogDescription: "This is my personal blog about tech."
+
+  # (Optional, default none) Default meta keywords used for the start page and as a fallback for
+  # every site without own keywords. Note: Meta keywords seems to be ignored by most modern search engines.
+  geekblogKeywords: []
 ```
 
 {{< /tab >}}

exampleSite/content/posts/post-with-image/index.md

@@ -3,6 +3,7 @@ title: "Post with image"
 date: 2020-06-22T20:00:00+02:00
 authors:
   - richard-roe
+  - john-doe
 tags:
   - Open Source
   - Development

layouts/partials/head.html

@@ -1,8 +1,26 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
-<meta name="description" content="{{ partial "title" . }}">
+{{ $description := default .Site.Params.GeekblogDescription (default .Summary .Description) }}
+{{ $keywords := default .Site.Params.GeekblogKeywords .Keywords }}
+{{ $author := default (slice .Site.Params.GeekblogAuthor) .Params.authors }}
+{{ with $description }}
+<meta name="description" content="{{ . }}">
+{{ end }}
+{{ with $keywords }}
+<meta name="keywords" content="{{ delimit . "," }}">
+{{ end }}
+{{ with $author }}
+    {{ $authors := slice }}
+    {{ range sort . }}
+        {{ $author := index $.Site.Data.authors . }}
+        {{ $authors = $authors | append $author.name }}
+    {{ end }}
 
-<title>{{ partial "title" . }} | {{ .Site.Title -}}</title>
+    {{ with $authors }}
+    <meta name="author" content="{{ delimit . "," }}">
+    {{ end }}
+{{ end }}
+<title>{{ if not (eq .Kind "home") }}{{ partial "title" . }} | {{ end }}{{ .Site.Title -}}</title>
 
 <link rel="icon" href="{{ "favicon/favicon-32x32.png" | relURL }}" type="image/x-icon">
 <link rel="stylesheet" href="{{ "main.min.css" | relURL }}" media="screen">

layouts/partials/title.html

@@ -1,11 +1,15 @@
 {{ $title := "" }}
 
 {{ if .Title }}
-  {{ $title = .Title }}
+    {{ $title = .Title }}
 {{ else if and .IsSection .File }}
-  {{ $title = path.Base .File.Dir | humanize | title }}
+    {{ $title = path.Base .File.Dir | humanize | title }}
 {{ else if and .IsPage .File }}
-  {{ $title = .File.BaseFileName | humanize | title }}
+    {{ $title = .File.BaseFileName | humanize | title }}
+{{ end }}
+
+{{ if eq .Kind "term" }}
+    {{ $title = $title | humanize | title }}
 {{ end }}
 
 {{ return $title }}