Add in-section Next/Prev content pointers

Conflicts:
	docs/content/meta/release-notes.md
	docs/content/templates/variables.md

docs/content/meta/release-notes.md

@@ -10,6 +10,7 @@ title: Release Notes
 weight: 10
 ---
 
+
 ## **0.12.0** Sept 1, 2014
 
 A lot has happened since Hugo v0.11.0 was released. Most of the work has been
@@ -56,6 +57,9 @@ This release represents over 110 code commits from 29 different contributors.
   * Renamed Indexes > [Taxonomies](/taxonomies/overview)
   * Renamed Chrome > [Partials](/templates/partials)
 
+## Next release
+  * Added section Prev/Next pointers.
+
 ## **0.10.0** March 1, 2014
 
 This release represents over 110 code commits from 29 different contributors.

docs/content/templates/variables.md

@@ -39,6 +39,8 @@ matter, content or derived from file location.
 **.TableOfContents** The rendered table of contents for this content.<br>
 **.Prev** Pointer to the previous content (based on pub date).<br>
 **.Next** Pointer to the following content (based on pub date).<br>
+**.PrevInSection** Pointer to the previous content within the same section (based on pub date)<br>
+**.NextInSection** Pointer to the following content within the same section (based on pub date)<br>
 **.FuzzyWordCount** The approximate number of words in the content.<br>
 **.WordCount** The number of words in the content.<br>
 **.ReadingTime** The estimated time it takes to read the content in minutes.<br>

hugolib/page.go

@@ -80,6 +80,8 @@ type PageMeta struct {
 type Position struct {
 	Prev *Page
 	Next *Page
+	PrevInSection *Page
+	NextInSection *Page
 }
 
 type Pages []*Page

hugolib/site.go

@@ -724,6 +724,15 @@ func (s *Site) assembleSections() {
 
 	for k := range s.Sections {
 		s.Sections[k].Sort()
+
+		for i, wp := range s.Sections[k] {
+			if i > 0 {
+				wp.Page.NextInSection = s.Sections[k][i - 1].Page;
+			}
+			if i < len(s.Sections[k]) - 1 {
+				wp.Page.PrevInSection = s.Sections[k][i + 1].Page;
+			}
+		}
 	}
 }