diff --git a/resources/public/content/Simplified example gallery.md b/resources/public/content/Simplified example gallery.md
index eac0394..32dc0bc 100644
--- a/resources/public/content/Simplified example gallery.md	
+++ b/resources/public/content/Simplified example gallery.md	
@@ -13,7 +13,7 @@ That's all there is to it - a sequence of image links just as you'd write them a
 
 ## The Gallery
 
-This page holds another example Photoswipe gallery, this time using a simpler, Markdown-based specification. Processing this specification takes more work than the full syntax used in the other [[Example gallery]], so the gallery may be slower to load; but it's much easier to configure.
+This page holds another example Photoswipe gallery, this time using a simpler, Markdown-based specification. Processing this specification takes more work than the full syntax used in the other [[Example gallery]], so the gallery may be slower to load; but it's much easier to configure. To see it, <a href="edit?page=Simplified%20example%20gallery">edit this page.</a>
 
 ```pswp
 ![Frost on a gate, Laurieston](content/uploads/g1.jpg)
diff --git a/resources/templates/edit.html b/resources/templates/edit.html
index 44ee54a..840491d 100644
--- a/resources/templates/edit.html
+++ b/resources/templates/edit.html
@@ -11,7 +11,7 @@
 
 {% block content %}
         <div id="content" class="edit">
-            <form action="{{servlet-context}}/edit" method="POST">
+            <form id="edit-form" action="{{servlet-context}}/edit" method="POST">
                 {% csrf-field %}
                 <input type="hidden" name="page" value="{{page}}"/>
                 <textarea name="src" id="src" rows="25" cols="80">{{content}}</textarea>
@@ -21,12 +21,20 @@
                         value="{%if exists%}{%else%}New file {{page}}{%endif%}" required/>
                 </p>
                 <p class="widget">
-                    <label for="submit">{% i18n save-prompt %}</label>
-                    <input name="submit" id="submit" type="submit" class="action" value="{% i18n save-label %}"/>
+                    <label for="submit-button">{% i18n save-prompt %}</label>
+                    <input name="submit-button" id="submit-button" type="submit" class="action" value="{% i18n save-label %}"/>
                 </p>
             </form>
         </div>
         <script>
+          // intercept control-S (or on Mac meta-S) and submit the form. Saves much annoyance.
+          document.addEventListener("keydown", function(e) {
+            if (e.keyCode == 83 && (navigator.platform.match("Mac") ? e.metaKey : e.ctrlKey))      {
+              e.preventDefault();
+              document.getElementById('edit-form').submit();
+            }
+          }, false);
+          // initialise the editor
           var simplemde = new SimpleMDE({
             autosave: {
               enabled: true,
diff --git a/resources/templates/wiki.html b/resources/templates/wiki.html
index 81634ea..e1f5d2d 100644
--- a/resources/templates/wiki.html
+++ b/resources/templates/wiki.html
@@ -17,14 +17,4 @@
       {% endif %}
       {{content|safe}}
     </div>
-
-    <script>
-      //<![CDATA[
-      if (document.addEventListener) {
-          document.addEventListener("DOMContentLoaded", function(event) {
-          mermaid.initialize({startOnLoad:true});
-        });
-      }
-      //]]
-    </script>
 {% endblock %}
diff --git a/src/smeagol/extensions/mermaid.clj b/src/smeagol/extensions/mermaid.clj
index 6185b5d..60cf04f 100644
--- a/src/smeagol/extensions/mermaid.clj
+++ b/src/smeagol/extensions/mermaid.clj
@@ -79,7 +79,22 @@
     (log/info "Retrieved graph-spec from " (:from data) " `" ((:from data) data) "`")
     (str "<div class=\"mermaid data-visualisation\" id=\"mermaid" index "\">\n"
          graph-spec
-         "\n</div>")))
+         "\n</div>
+         <script>
+           //<![CDATA[
+              /* don't do this twice! */
+              if ( document.mermaidListenerAdded != true)
+              {
+                 if (document.addEventListener) {
+                     document.addEventListener(\"DOMContentLoaded\", function(event) {
+                       mermaid.initialize({startOnLoad:true});
+                   });
+                    document.mermaidListenerAdded = true;
+                 }
+              }
+            //]]
+          </script>
+         ")))
 
 ;; (fs/file? (str (nio/resource-path) "data/classes.mermaid"))
 ;;  (slurp (str (nio/resource-path) "data/classes.mermaid"))
diff --git a/src/smeagol/extensions/photoswipe.clj b/src/smeagol/extensions/photoswipe.clj
index d145943..766fef0 100644
--- a/src/smeagol/extensions/photoswipe.clj
+++ b/src/smeagol/extensions/photoswipe.clj
@@ -42,11 +42,14 @@
   specification based on that documented on the Photoswipe website."
   [^String spec ^Integer index]
   (str
-    "<div class=\"pswp\" id=\"pswp-"
+    "<div class='gallery'>
+    <div class=\"pswp\" id=\"pswp-"
     index "\" tabindex=\"-1\" role=\"dialog\" aria-hidden=\"true\">\n"
     (slurp
       (str (io/resource-path) "html-includes/photoswipe-boilerplate.html"))
     "</div>
+    <p><button id=\"open-gallery-" index "\" onclick=\"gallery" index
+    ".init(); document.getElementById(`open-gallery-" index "`).style.display = 'none';\">Open the gallery</button></p>
     <script>
     \n//<![CDATA[\n
     var pswpElement = document.getElementById('pswp-" index "');
@@ -56,11 +59,12 @@
     var gallery" index
     " = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, spec"
     index ".slides, spec" index ".options);
-    if (spec" index ".openImmediately) { gallery" index ".init(); }
+    if (spec" index ".openImmediately) {
+    document.getElementById(`open-gallery-" index "`).style.display = 'none';
+    gallery" index ".init();
+    }
     \n//]]\n
     </script>
-    <p><button onclick=\"gallery" index
-    ".init()\">Open the gallery</button></p>
     </div>"))
 
 
@@ -68,19 +72,25 @@
   "Parser to transform a sequence of Markdown image links into something we
   can build into JSON. Yes, this could all have been done with regexes, but
   they are very inscrutable."
-  (insta/parser "SLIDE := START-CAPTION title END-CAPTION src END-SRC;
+  (insta/parser "SLIDES := SLIDE | SLIDE SPACE SLIDES;
+                SLIDE := START-CAPTION title END-CAPTION src END-SRC;
                 START-CAPTION := '![' ;
                 END-CAPTION := '](' ;
                 END-SRC := ')' ;
                 title := #'[^]]*' ;
                 src := #'[^)]*' ;
-                SPACE := #'[\\r\\n\\W]*'"))
+                SPACE := #'[\\s]*'"))
 
-(defn- simplify
+
+(defn simplify
+  "Simplify a parse-`tree` created by `simple-grammar`, q.v."
   [tree]
   (if
     (coll? tree)
     (case (first tree)
+      :SLIDES (cons
+                (simplify (first (rest tree)))
+                (first (simplify (rest (rest tree)))))
       :SLIDE (remove empty? (map simplify (rest tree)))
       :title tree
       :src tree
@@ -89,6 +99,7 @@
       :END-SRC nil
       (remove empty? (map simplify tree)))))
 
+
 (defn slide-merge-dimensions
   "If this `slide` appears to be local, return it decorated with the
   dimensions of the image it references."
@@ -109,29 +120,40 @@
 ;;   {:title "Frost on a gate, Laurieston",
 ;;    :src "content/uploads/g1.jpg"})
 
-(defn- process-simple-slide
-  [slide-spec]
-  (let [s (simplify (simple-grammar slide-spec))
-        s'(zipmap (map first s) (map #(nth % 1) s))
+(defn find-thumb
+  [url thumbsize]
+  (if
+    (and
+      (uploaded? url)
+      thumbsize)
+    (let [p (str (cio/file "uploads" (name thumbsize) (fs/base-name url)))
+          p' (cio/file content-dir p)
+          r (str (cio/file "content" p))]
+      (if
+        (and (fs/exists? p') (fs/readable? p'))
+        r))))
+
+(defn process-simple-slide
+  "Process a single `slide`, as decoded by `simple-grammar`. At this stage a
+  slide is expected to be represented as a sequence of vectors, one for each
+  property of the slide (`:title`, `:src`). Each vector contains the name of
+  the property as a keyword as its first element, and the value of the
+  property as its second element.
+
+  Returns a map of these properties, with, if possible, `:w` (width), `:h`
+  (height), and `:msrc` (source URL of a low resolution variant) added."
+  [slide]
+  (let [s' (zipmap (map first slide) (map #(nth % 1) slide))
         thumbsizes (:thumbnails config)
         thumbsize (first
                     (sort
                       #(> (%1 thumbsizes) (%2 thumbsizes))
                       (keys thumbsizes)))
-        url (:url s')
-        thumb (if
-                (and
-                  (uploaded? url)
-                  thumbsize)
-                (let [p (str (cio/file "uploads" (name thumbsize) (fs/base-name url)))
-                      p' (cio/file content-dir p)]
-                  (if
-                    (and (fs/exists? p') (fs/readable? p'))
-                    p)))]
+        url (:src s')]
     (slide-merge-dimensions
-      (if thumb
-        (assoc s' :msrc thumb)
-        s'))))
+      (assoc s' :msrc (find-thumb url thumbsize)))))
+
+(process-simple-slide '([:title "Frost on a gate, Laurieston"] [:src "content/uploads/g1.jpg"]))
 
 (def process-simple-photoswipe
   "Process a simplified specification for a photoswipe gallery, comprising just
@@ -144,8 +166,7 @@
         (json/write-str
           {:slides (map
                      process-simple-slide
-                     (re-seq #"!\[[^(]*\([^)]*\)"  spec))
-           ;; TODO: better to split slides in instaparse
+                     (simplify (simple-grammar spec)))
            :options { :timeToIdle 100 }
            :openImmediately true}) index))))
 
@@ -157,12 +178,12 @@
 ;;           ![Feathered snow on log, Taliesin](content/uploads/g3.jpg)
 ;;           ![Crystaline growth on seed head, Taliesin](content/uploads/g4.jpg)"))
 
-;; (process-simple-photoswipe
-;;   "![Frost on a gate, Laurieston](content/uploads/g1.jpg)
-;;   ![Feathered crystals on snow surface, Taliesin](content/uploads/g2.jpg)
-;;   ![Feathered snow on log, Taliesin](content/uploads/g3.jpg)
-;;   ![Crystaline growth on seed head, Taliesin](content/uploads/g4.jpg)"
-;;   1)
+(process-simple-photoswipe
+  "![Frost on a gate, Laurieston](content/uploads/g1.jpg)
+  ![Feathered crystals on snow surface, Taliesin](content/uploads/g2.jpg)
+  ![Feathered snow on log, Taliesin](content/uploads/g3.jpg)
+  ![Crystaline growth on seed head, Taliesin](content/uploads/g4.jpg)"
+  1)
 
 (defn process-photoswipe
   "Process a Photoswipe specification which may conform either to the
diff --git a/src/smeagol/formatting.clj b/src/smeagol/formatting.clj
index 8f0d92b..a2d245e 100644
--- a/src/smeagol/formatting.clj
+++ b/src/smeagol/formatting.clj
@@ -165,10 +165,6 @@
   ([inclusions text]
    (let [ks (keys inclusions)]
      (if (empty? (keys inclusions))
-       ;; TODO: this is one opportunity to add scripts at the end of the
-       ;; constructed text. I've a feeling that that would be a mistake and
-       ;; that instead we should hand back a map comprising the text and the
-       ;; keys of the extensions
        text
        (let [kw (first ks)]
          (reintegrate-inclusions
diff --git a/src/smeagol/local_links.clj b/src/smeagol/local_links.clj
index f1bed0b..0fdf09c 100644
--- a/src/smeagol/local_links.clj
+++ b/src/smeagol/local_links.clj
@@ -29,7 +29,8 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 ;; Error to show if text to be rendered is nil.
-;; TODO: this should go through i18n
+;; TODO: this should go through i18n, but for that to happen we need the
+;; request passed through to here.
 (def no-text-error "No text: does the file exist?")
 
 
diff --git a/src/smeagol/routes/wiki.clj b/src/smeagol/routes/wiki.clj
index 27ec424..17c46a4 100644
--- a/src/smeagol/routes/wiki.clj
+++ b/src/smeagol/routes/wiki.clj
@@ -320,14 +320,14 @@
         uploaded (if upload (ul/store-upload params data-path))
         user (session/get :user)
         summary (format "%s: %s" user (or (:summary params) "no summary"))]
-;; TODO: Get this working! it MUST work!
-;;     (if-not
-;;       (empty? uploaded)
-;;       (do
-;;         (map
-;;           #(git/git-add git-repo (str :resource %))
-;;           (remove nil? uploaded))
-;;         (git/git-commit git-repo summary {:name user :email (auth/get-email user)})))
+    (log/info (session/get :user) "has uploaded" (cs/join "; " (map :resource uploaded)))
+    (if-not
+      (empty? uploaded)
+      (do
+        (map
+          #(git/git-add git-repo (str :resource %))
+          (remove nil? uploaded))
+        (git/git-commit git-repo summary {:name user :email (auth/get-email user)})))
     (layout/render "upload.html"
                    (merge (util/standard-params request)
                           {:title (util/get-message :file-upload-title request)
@@ -408,7 +408,13 @@
 (defn wrap-restricted-redirect
   ;; TODO: this is not idiomatic, and it's too late to write something idiomatic just now
   ;; TODO TODO: it's also not working.
+  ;; TODO: probably I need to use either the 'buddy' or 'friend' authentication libraries
+  ;; see https://github.com/cemerick/friend and
+  ;; https://github.com/metosin/compojure-api/wiki/Authentication-and-Authorization
+  ;; but I don't yet see even so how to do redirect to the failed page after successful
+  ;; authorisation.
   [f request]
+  (log/info "wrap-restricted-redirect: f:" f "; request " (with-out-str (clojure.pprint/pprint request)))
   (route/restricted
     (apply
       f
diff --git a/test/smeagol/test/extensions/photoswipe.clj b/test/smeagol/test/extensions/photoswipe.clj
new file mode 100644
index 0000000..34674ea
--- /dev/null
+++ b/test/smeagol/test/extensions/photoswipe.clj
@@ -0,0 +1,45 @@
+(ns smeagol.test.extensions.photoswipe
+  (:require [clojure.test :refer :all]
+            [clojure.string :as cs]
+            [smeagol.extensions.photoswipe :refer :all]))
+
+
+(deftest simple-syntax-tests
+  (testing "Process simple slide"
+    (let [expected {:title "Frost on a gate, Laurieston",
+                    :src "content/uploads/g1.jpg",
+                    :w 2592,
+                    :h 1944
+                    :msrc "content/uploads/med/g1.jpg"}
+          actual (process-simple-slide
+                   '([:title "Frost on a gate, Laurieston"]
+                     [:src "content/uploads/g1.jpg"]))]
+      (is (= actual expected))))
+  (testing "Find thumbnail"
+    (let [expected "content/uploads/med/g1.jpg"
+          actual (find-thumb "content/uploads/g1.jpg" :med)]
+      (is (= actual expected) "`resources/content/uploads/med/g1.jpg` is in
+          the repository, so should be found"))
+    (let [expected nil
+          actual (find-thumb "passwd" :med)]
+      (is (= actual expected) "`resources/passwd` is in
+          the repository, but is not uploaded so should NOT be found")))
+  (testing "Simple slide grammar"
+    (let [expected '(([:title "Frost on a gate, Laurieston"] [:src "content/uploads/g1.jpg"]))
+          actual (simplify
+                   (simple-grammar
+                     "![Frost on a gate, Laurieston](content/uploads/g1.jpg)"))]
+      (is (= actual expected) "Valid syntax, should parse")
+      (is (empty? (simplify (simple-grammar "[Fred](fred.jpg)")))
+          "Invalid syntax (no leading `!`), should not parse."))
+    (let  [expected '(([:title "Frost on a gate, Laurieston"] [:src "content/uploads/g1.jpg"])
+                      ([:title "Feathered crystals on snow surface, Taliesin"] [:src "content/uploads/g2.jpg"])
+                      ([:title "Feathered snow on log, Taliesin"] [:src "content/uploads/g3.jpg"])
+                      ([:title "Crystaline growth on seed head, Taliesin"] [:src "content/uploads/g4.jpg"]))
+           actual (simplify
+                    (simple-grammar
+                      "![Frost on a gate, Laurieston](content/uploads/g1.jpg)
+                      ![Feathered crystals on snow surface, Taliesin](content/uploads/g2.jpg)
+                      ![Feathered snow on log, Taliesin](content/uploads/g3.jpg)
+                      ![Crystaline growth on seed head, Taliesin](content/uploads/g4.jpg)"))]
+      (is (= actual expected) "Valid syntax, should parse"))))
diff --git a/test/smeagol/test/local_links.clj b/test/smeagol/test/local_links.clj
index dc3682d..e02d727 100644
--- a/test/smeagol/test/local_links.clj
+++ b/test/smeagol/test/local_links.clj
@@ -1,7 +1,6 @@
 (ns smeagol.test.local-links
   (:require [clojure.test :refer :all]
             [clojure.string :as cs]
-            [smeagol.local-links :refer [local-links no-text-error]]
             [smeagol.extensions.test :refer :all]
             [smeagol.local-links :refer :all]))