diff --git a/README.md b/README.md
index 67b5ef8..41848d7 100644
--- a/README.md
+++ b/README.md
@@ -48,10 +48,11 @@ Missing features:
 - Excerpts
 - Pagination
 - Math
-- Plugins (except `jekyll-avatar` and `jekyll-gist`)
-- `site-static_files`, `site.html_files`, and `site.tags`
 - CSV and JSON data files
+- Plugins (except `jekyll-avatar`, `jekyll-gist`, and `jekyll-redirect-from`, which are simulated)
+- `site-static_files`, `site.html_files`, and `site.tags`
 - Jekyll liquid filters: `group_by_exp`, `cgi_escape`, `uri_escape`, `scssify`, and `smartify`
+- Windows compatibility
 
 For more detailed status:
 
@@ -63,6 +64,8 @@ For more detailed status:
 
 These will probably not change.
 
+- `uniq` doesn't work the same way as in Jekyll / Shopify Liquid. See the [Go Liquid differences](https://github.com/osteele/liquid#differences) for more on this.
+- Real Jekyll provides an (undocumented) `jekyll.version` variable to templates. Copying this didn't seem right.
 - `serve` generates pages on the fly; it doesn't write to the file system.
 - Files are cached to `/tmp/gojekyll-${USER}`, not `./.sass-cache`
 - Server live reload is always on.
@@ -171,14 +174,16 @@ Gojekyll uses these libraries:
 | [gopkg.in/alecthomas/kingpin.v2](https://github.com/alecthomas/kingpin)        | Alec Thomas                                            | command line and flag parser                          | MIT                               |
 | [gopkg.in/yaml.v2](https://github.com/go-yaml/yaml)                            | Canonical                                              | YAML support                                          | Apache License 2.0                |
 
-In addition to being totally and obviously inspired by Jekyll, Jekyll's *documentation* was solid and indispensible. Many of the filter test cases are taken directly from the Jekyll documentation, and during development the [Jekyll docs](https://jekyllrb.com/docs/home/) were always open in at least one tab.
+The text for `gojekyll help` was taken from the output of `jekyll help`, and is used under the terms of the MIT license.
 
-The text for `gojekyll help` was taken from the output of `jekyll help`.
+Many of the filter test cases are taken directly from the Jekyll documentation, and are used under the terms of the MIT license.
 
-The template for page redirections was adapted from the template in <https://github.com/jekyll/jekyll-redirect-from>.
+The template for `jekyll-redirect-from` page redirects was adapted from the template in <https://github.com/jekyll/jekyll-redirect-from>, and is used under the terms of the MIT license.
 
 The gopher image in the `testdata` directory is from [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Gophercolor.jpg). It is used under the [Creative Commons Attribution-Share Alike 3.0 Unported license](https://creativecommons.org/licenses/by-sa/3.0/deed.en).
 
+In addition to being totally and obviously inspired by Jekyll and its plugins, Jekyll's *documentation* was solid and indispensible. During development the [Jekyll docs](https://jekyllrb.com/docs/home/) were always open in at least one tab.
+
 ## Related
 
 [Hugo](https://gohugo.io) is *the* pre-eminent Go static site generator. It isn't Jekyll-compatible (-), but it's extraordinarily polished, performant, and productized (+++).
diff --git a/plugins/plugins.go b/plugins/plugins.go
index 672f07b..635c6a7 100644
--- a/plugins/plugins.go
+++ b/plugins/plugins.go
@@ -8,6 +8,8 @@ package plugins
 import (
 	"fmt"
 
+	"github.com/osteele/gojekyll/config"
+	"github.com/osteele/gojekyll/pages"
 	"github.com/osteele/liquid"
 	"github.com/osteele/liquid/render"
 )
@@ -18,6 +20,32 @@ type PluginContext interface {
 	TemplateEngine() liquid.Engine
 }
 
+// Site is the site interface that is available to a plugin.
+type Site interface {
+	AddDocument(pages.Document, bool)
+	Config() *config.Config
+	Pages() []pages.Page
+}
+
+// Plugin describes the hooks that a plugin can override.
+type Plugin interface {
+	PostRead(site Site) error
+}
+
+type plugin struct{}
+
+func (p plugin) PostRead(site Site) error { return nil }
+
+// Find looks up a plugin by name
+func Find(name string) (Plugin, bool) {
+	switch name {
+	case "jekyll-redirect-from":
+		return jekyllFeedPlugin{}, true
+	default:
+		return nil, false
+	}
+}
+
 // Install installs a plugin from the plugin directory.
 func Install(name string, ctx PluginContext) bool {
 	p, found := directory[name]
@@ -79,6 +107,6 @@ func (h pluginHelper) makeUnimplementedTag() liquid.Renderer {
 			fmt.Printf("The %q tag in the %q plugin has not been implemented.\n", ctx.TagName(), h.name)
 			warned = true
 		}
-		return "", nil
+		return fmt.Sprintf(`<!-- unimplemented tag: %q -->`, ctx.TagName()), nil
 	}
 }
diff --git a/plugins/redirect_from.go b/plugins/redirect_from.go
index 988255d..32bff39 100644
--- a/plugins/redirect_from.go
+++ b/plugins/redirect_from.go
@@ -3,35 +3,14 @@ package plugins
 import (
 	"bytes"
 	"fmt"
-	"html/template"
 	"io"
+	"strings"
+	"text/template"
 
 	"github.com/osteele/gojekyll/pages"
 )
 
-type Site interface {
-	AddDocument(pages.Document, bool)
-	Pages() []pages.Page
-}
-
-type Plugin interface {
-	PostRead(site Site) error
-}
-
-type plugin struct{}
-
-func (p plugin) PostRead(site Site) error { return nil }
-
-type jekyllFeedPlugin struct{}
-
-func Find(name string) (Plugin, bool) {
-	switch name {
-	case "jekyll-redirect-from":
-		return jekyllFeedPlugin{}, true
-	default:
-		return nil, false
-	}
-}
+type jekyllFeedPlugin struct{ plugin }
 
 var redirectTemplate *template.Template
 
@@ -78,7 +57,9 @@ func (p jekyllFeedPlugin) PostRead(site Site) error {
 		if ok {
 			switch rd := rd.(type) {
 			case string:
-				var p = redirector{From: rd, To: p.Permalink()}
+				siteurl := site.Config().AbsoluteURL
+				baseurl := site.Config().BaseURL
+				var p = redirector{From: rd, To: strings.Join([]string{siteurl, baseurl, p.Permalink()}, "")}
 				redirections = append(redirections, &p)
 			default:
 				fmt.Printf("unimplemented redirect_from type: %T\n", rd)
@@ -102,15 +83,14 @@ func (p jekyllFeedPlugin) PostRead(site Site) error {
 }
 
 // Adapted from https://github.com/jekyll/jekyll-redirect-from
-var redirectFromText = `
-<!DOCTYPE html>
+var redirectFromText = `<!DOCTYPE html>
 <html lang="en-US">
   <meta charset="utf-8">
-  <title>Redirecting&hellip;</title>
+  <title>Redirecting…</title>
   <link rel="canonical" href="{{ .To }}">
   <meta http-equiv="refresh" content="0; url={{ .To }}">
   <meta name="robots" content="noindex">
-  <h1>Redirecting&hellip;</h1>
+  <h1>Redirecting…</h1>
   <a href="{{ .To }}">Click here if you are not redirected.</a>
   <script>location="{{ .To }}"</script>
 </html>`