better sub-categories

_includes/breadcrumb.html

@@ -3,9 +3,11 @@
   if page.layout == 'page' %}
   <li>{{ page.title }}</li>{%
   elsif page.layout == 'post' %}{%
+    assign lastcat = page.categories | last %}{%
     for cat in page.categories %}{%
-      capture urlstr %}{{ urlstr }}/{{ cat }}{% endcapture %}
-  <li style="text-transform: capitalize;"><a href="{{ site.baseurl }}{{ urlstr }}">{{ cat }}</a></li>{%
+      unless page.permalink and cat == lastcat %}{%
+        capture urlstr %}{{ urlstr }}/{{ cat }}{% endcapture %}
+  <li style="text-transform: capitalize;"><a href="{{ site.baseurl }}{{ urlstr }}">{{ cat }}</a></li>{%  endunless %}{%
     endfor %}
   <li>{{ page.title }}</li>{%
   endif %}

_includes/fn_sortednav.html

@@ -1,31 +1,35 @@
 {%      comment %}
           # Find this post in sorted_list and get back/next
-          #   depends: sorted_list of posts
+          #   depends: sorted_list of posts and idxperma, idxtitle, idxbutton of index
           #   include-params: posclass - indicates whether top or bottom style
           #   returns: displays navigation using included backnextnav.html
           # Original idea:
           #   https://gist.github.com/budparr/3e637e575471401d01ec
   {%    endcomment
 %}{%    for post in sorted_list
-%}{%      if post.title == page.title
+%}{%      if post.url == page.url
 %}{%        unless forloop.first
 %}{%          assign prevbutton = '< Back'
 %}{%          assign prevurl = prev.url
 %}{%          assign prevtitle = prev.title
+%}{%        elsif page.permalink
+%}{%          assign prevbutton = nil
+%}{%          assign prevurl = nil
+%}{%          assign prevtitle = nil
 %}{%        else
-%}{%          assign prevbutton = 'Index'
-%}{%          assign prevurl = perma | prepend: baseurl
-%}{%          assign prevtitle = 'Works Index'
+%}{%          assign prevbutton = idxbutton
+%}{%          assign prevurl = idxperma | prepend: baseurl
+%}{%          assign prevtitle = idxtitle
 %}{%        endunless
 %}{%        unless forloop.last
 %}{%          assign next = sorted_list[forloop.index]
 %}{%          assign nextbutton = 'Next >'
 %}{%          assign nexturl = next.url
 %}{%          assign nexttitle = next.title
 %}{%        else
-%}{%          assign nextbutton = 'Index'
-%}{%          assign nexturl = perma | prepend: baseurl
-%}{%          assign nexttitle = 'Works Index'
+%}{%          assign nextbutton = idxbutton
+%}{%          assign nexturl = idxperma | prepend: baseurl
+%}{%          assign nexttitle = idxtitle
 %}{%        endunless
 %}{%      endif
 %}{%      assign prev = post

_layouts/post.html

@@ -5,11 +5,15 @@
     <div class="inner{% if page.options contains 'fullwidth' %} fullwidth{% endif %}">{%
       unless site.navlinks == 'none'
 %}{%    if page.categories contains 'works'
-%}{%      assign perma = '/works/'
+%}{%      assign idxperma = '/works/'
+%}{%      assign idxtitle = 'Works Index'
+%}{%      assign idxbutton = 'Index'
 %}{%      include fn_groupsort_reverse.html unsorted=site.categories.works groupby='priority' sortby='date'
 %}{%    endif
 %}{%    if page.categories.first == 'topics' and page.categories.last != 'topics'
-%}{%      assign perma = page.categories | join: '/' | prepend: '/' | append: '/'
+%}{%      assign idxperma = page.categories | join: '/' | prepend: '/' | append: '/'
+%}{%      assign idxtitle = 'Start page'
+%}{%      assign idxbutton = 'Start'
 %}{%      assign sorted_list = site.empty_array
 %}{%      for topic in site.categories.topics
 %}{%        if topic.categories.last == page.categories.last

_posts/3006-09-22-subcattest-topic1.md

@@ -0,0 +1,11 @@
+---
+title: My Topic Group
+excerpt: first topic in my neat grouping
+permalink: /topics/my topic group/
+categories:
+  - topics
+  - my topic group
+date: 3006-09-22 00:00
+---
+
+Here we go.

_posts/3006-09-22-subcattest-topic2.md

@@ -0,0 +1,10 @@
+---
+title: Test topic 2
+excerpt: Second awesome topic in the group
+categories:
+  - topics
+  - my topic group
+date: 3006-09-22 00:01
+---
+
+Yada yada and more yada.

_posts/3006-09-22-subcattest-topic3.md

@@ -0,0 +1,10 @@
+---
+title: Last topic in group
+excerpt: last topic
+categories:
+  - topics
+  - my topic group
+date: 3006-09-22 00:02
+---
+
+This about sums it all up.

_posts/3016-02-26-template.md

@@ -9,8 +9,8 @@ author: arkadianriver
 
 ### `categories`
 
-_IF_ it's a post, the categories array is required with at least
-_the first element_ set to the permalink name of its parent page
+If it's a post, the categories array is required with at least
+the first element set to the permalink name of its parent page
 (so that breadcrumbs work).
 
 {% highlight yaml %}
@@ -19,15 +19,10 @@ categories: topics ...
 
 The two top-level categories with provided index pages are `topics` and `works`.
 
-Advanced:
+If you want back/next navigation within a subcategory:
 
 {:.nobullet}
-- The following settings will list the first topic in the subcategory
-  in the topics index and (soon) will create back/next links within the
-  subcategory.
-
-{:.nobullet}
-- To start, create a first post for the sub-category, but with a permalink.
+- Create a first post for the sub-category, but with a permalink.
   The category list can be space-delimited on one line or in a bulleted list.
   Note that the category names must exactly match the permalink.
 
@@ -41,7 +36,17 @@ Advanced:
   `/topics/my-great-vacation/index.html`
 
 {:.nobullet}
-- For topics within that sub-category, add the additional category and no
+- If your subcategory contains spaces, specify categories as an array
+
+  {% highlight yaml %}
+  categories:
+    - topics
+    - my great vacation
+  permalink: /topics/my great vacation/
+{% endhighlight %}
+
+{:.nobullet}
+- For subsequent topics in the sub-category, add the sub-category and no
   permalink:
 
   {% highlight yaml %}
@@ -52,7 +57,13 @@ Advanced:
 - resulting in: `/topics/my-great-vacation/topic-title.html`
 
 {:.nobullet}
-- (coming soon) This creates back and next links.
+- Topics in the sub-category are sorted by date (and time). Therefore, if they
+  all fall on the same day, specify the date in the post with a timestamp by
+  which to sort.
+
+  {% highlight yaml %}
+  date: 3009-09-22 00:00:03
+{% endhighlight %}
 
 
 ### `excerpt`
@@ -68,7 +79,7 @@ excerpt: yada yada
 
 ### `permalink`
 
-_IF_ it's a parent page, use a permalink for it's new category, but don't specify
+If it's a parent page, use a permalink for it's new category, but don't specify
 that new category for this parent page itself, because it becomes the index
 that a breadcrumb link would pop up to, ie: `/new-category/index.html`. Also see
 `categories`.