Add the titleSeparator parameter. (#448)

* Add the titleSeparator parameter

* Add a description for the titleSeparator parameter

Author: razonyang

exampleSite/config.toml

@@ -15,6 +15,7 @@ defaultContentLanguageInSubdir= true
   showVisitedLinks = true
   disableBreadcrumb = false
   disableNextPrev = false
+  titleSeparator = "::"
 
 [outputs]
 home = [ "HTML", "RSS", "JSON"]

exampleSite/content/basics/configuration/_index.en.md

@@ -43,6 +43,8 @@ Note that some of these parameters are explained in details in other sections of
   themeVariant = ""
   # Provide a list of custom css files to load relative from the `static/` folder in the site root.
   custom_css = ["css/foo.css", "css/bar.css"]
+  # Change the title separator. Default to "::".
+  titleSeparator = "-"
 ```
 
 ## Activate search

layouts/partials/header.html

@@ -6,7 +6,7 @@
     {{ hugo.Generator }}
     {{ partial "meta.html" . }}
     {{ partial "favicon.html" . }}
-    <title>{{ .Title }} :: {{ .Site.Title }}</title>
+    <title>{{ .Title }} {{ default "::" .Site.Params.titleSeparator }} {{ .Site.Title }}</title>
 
     {{ $assetBusting := not .Site.Params.disableAssetsBusting }}
     <link href="{{"css/nucleus.css" | relURL}}{{ if $assetBusting }}?{{ now.Unix }}{{ end }}" rel="stylesheet">