From f5194d35bf43786910c7aae0def05e21b1fbefc6 Mon Sep 17 00:00:00 2001
From: Thibaut Courouble <thibaut@me.com>
Date: Sun, 17 Sep 2017 12:36:31 -0400
Subject: [PATCH] Add automatic/fallback redirection for URLs with missing or
 incorrect trailing slash

---
 assets/javascripts/app/router.coffee | 13 +++++++++++--
 assets/javascripts/lib/page.coffee   |  7 ++++++-
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/assets/javascripts/app/router.coffee b/assets/javascripts/app/router.coffee
index 41870424..38617f12 100644
--- a/assets/javascripts/app/router.coffee
+++ b/assets/javascripts/app/router.coffee
@@ -66,14 +66,23 @@ class app.Router
 
   entry: (context, next) ->
     doc = app.docs.findBySlug(context.params.doc)
+    return next() unless doc
+    path = context.params.path
+    hash = context.hash
 
-    if entry = doc?.findEntryByPathAndHash(context.params.path, context.hash)
+    if entry = doc.findEntryByPathAndHash(path, hash)
       context.doc = doc
       context.entry = entry
       @triggerRoute 'entry'
       return
+    else if path.slice(-6) is '/index'
+      path = path.substr(0, path.length - 6)
+      return entry.fullPath() if entry = doc.findEntryByPathAndHash(path, hash)
     else
-      return next()
+      path = "#{path}/index"
+      return entry.fullPath() if entry = doc.findEntryByPathAndHash(path, hash)
+
+    return next()
 
   root: ->
     return '/' if app.isSingleDoc()
diff --git a/assets/javascripts/lib/page.coffee b/assets/javascripts/lib/page.coffee
index d8159094..8df7422e 100644
--- a/assets/javascripts/lib/page.coffee
+++ b/assets/javascripts/lib/page.coffee
@@ -53,7 +53,12 @@ page.replace = (path, state, skipDispatch, init) ->
   context = new Context(path, state or currentState)
   context.init = init
   currentState = context.state
-  page.dispatch(context) unless skipDispatch
+  result = page.dispatch(context) unless skipDispatch
+  if result
+    context = new Context(result)
+    context.init = init
+    currentState = context.state
+    page.dispatch(context)
   context.replaceState()
   updateCanonicalLink()
   track() unless skipDispatch