trailing slash or no trailing slash for .BaseUrl?

When in develop mode, that is, hugo server at http://localhost:1313, .Site.BaseUrl has no trailing slash, but when I configured a baseurl in config.yaml, and run hugo to build, the .BaseUrl is always trailed by a slash.

This makes it ugly when I want to do

{{ if .Params.otherlangs }}
  {{ range $index, $lang := .Params.otherlangs }}
    <a href="{{ $.Site.BaseUrl }}/{{ or (echoParam $.Params.otherurls $index) $lang }}">{{ index $.Site.Params.languages $lang }}</a>
    |
  {{ end }}
{{ end }}

Links generated:

    <a href="http://localhost:1313/en/abc">English</a>
    <a href="http://mysite.com/porfolio//en/abc">English</a>

gohugoio / hugo

trailing slash or no trailing slash for .BaseUrl? #221