Improve URL search

Closes #434.

assets/javascripts/app/router.coffee

@@ -102,6 +102,9 @@ class app.Router
   isRoot: ->
     location.pathname is '/'
 
+  isDocIndex: ->
+    @context.doc and @context.entry is @context.doc.toEntry()
+
   setInitialPath: ->
     # Remove superfluous forward slashes at the beginning of the path
     if (path = location.pathname.replace /^\/{2,}/g, '/') isnt location.pathname

assets/javascripts/views/search/search.coffee

@@ -20,7 +20,7 @@ class app.views.Search extends app.View
 
   @routes:
     root: 'onRoot'
-    after: 'autoFocus'
+    after: 'afterRoute'
 
   init: ->
     @addSubview @scope = new app.views.SearchScope @el
@@ -84,8 +84,10 @@ class app.views.Search extends app.View
     return
 
   searchUrl: =>
-    return unless app.router.isRoot()
-    @scope.searchUrl()
+    if app.router.isRoot()
+      @scope.searchUrl()
+    else if not app.router.isDocIndex()
+      return
 
     return unless value = @extractHashValue()
     @input.value = @value = value
@@ -136,13 +138,18 @@ class app.views.Search extends app.View
 
   onRoot: (context) =>
     @reset() unless context.init
-    @delay @searchUrl if context.hash
     return
 
+  afterRoute: (name, context) =>
+    @delay @searchUrl if context.hash
+    @autoFocus()
+
   extractHashValue: ->
     if (value = @getHashValue())?
       app.router.replaceHash()
       value
 
+  HASH_RGX = new RegExp "^##{SEARCH_PARAM}=(.*)"
+
   getHashValue: ->
-    try (new RegExp "##{SEARCH_PARAM}=(.*)").exec($.urlDecode location.hash)?[1] catch
+    try HASH_RGX.exec($.urlDecode location.hash)?[1] catch

assets/javascripts/views/search/search_scope.coffee

@@ -32,19 +32,23 @@ class app.views.SearchScope extends app.View
   name: ->
     @doc?.name
 
-  search: (value) ->
-    unless @doc
-      @searcher.find app.docs.all(), 'text', value
+  search: (value, searchDisabled = false) ->
+    return if @doc
+    @searcher.find app.docs.all(), 'text', value
+    @searcher.find app.disabledDocs.all(), 'text', value if not @doc and searchDisabled
     return
 
   searchUrl: ->
     if value = @extractHashValue()
-      @search value
+      @search value, true
     return
 
   onResults: (results) =>
-    if results.length
-      @selectDoc results[0]
+    return unless doc = results[0]
+    if app.docs.contains(doc)
+      @selectDoc(doc)
+    else
+      @redirectToDoc(doc)
     return
 
   selectDoc: (doc) ->
@@ -63,6 +67,12 @@ class app.views.SearchScope extends app.View
     @trigger 'change', @doc, previousDoc
     return
 
+  redirectToDoc: (doc) ->
+    hash = location.hash
+    app.router.replaceHash('')
+    window.location = doc.fullPath() + hash
+    return
+
   reset: =>
     return unless @doc
     previousDoc = @doc
@@ -97,8 +107,10 @@ class app.views.SearchScope extends app.View
       app.router.replaceHash(newHash)
       value
 
+  HASH_RGX = new RegExp "^##{SEARCH_PARAM}=(.+?) ."
+
   getHashValue: ->
-    try (new RegExp "^##{SEARCH_PARAM}=(.+?) .").exec($.urlDecode location.hash)?[1] catch
+    try HASH_RGX.exec($.urlDecode location.hash)?[1] catch
 
   afterRoute: (name, context) =>
     if !app.isSingleDoc() and context.init and context.doc