Avoid panic when pagination on 0 pages

Fixes #948

1 files changed, 16 insertions, 4 deletions

diff --git a/hugolib/pagination.go b/hugolib/pagination.go
index 67cc02167..8fb4f4e4a 100644
--- a/hugolib/pagination.go
+++ b/hugolib/pagination.go
@@ -30,6 +30,8 @@ type pager struct {
 
 type pagers []*pager
 
+var paginatorEmptyPages Pages
+
 type paginator struct {
 	paginatedPages []Pages
 	pagers
@@ -52,6 +54,9 @@ func (p *pager) Url() template.HTML {
 
 // Pages returns the elements on this page.
 func (p *pager) Pages() Pages {
+	if len(p.paginatedPages) == 0 {
+		return paginatorEmptyPages
+	}
 	return p.paginatedPages[p.PageNumber()-1]
 }
 
@@ -233,13 +238,20 @@ func newPaginator(pages Pages, size int, urlFactory paginationUrlFactory) (*pagi
 	split := splitPages(pages, size)
 
 	p := &paginator{total: len(pages), paginatedPages: split, size: size, paginationUrlFactory: urlFactory}
-	pagers := make(pagers, len(split))
 
-	for i := range p.paginatedPages {
-		pagers[i] = &pager{number: (i + 1), paginator: p}
+	var ps pagers
+
+	if len(split) > 0 {
+		ps = make(pagers, len(split))
+		for i := range p.paginatedPages {
+			ps[i] = &pager{number: (i + 1), paginator: p}
+		}
+	} else {
+		ps = make(pagers, 1)
+		ps[0] = &pager{number: 1, paginator: p}
 	}
 
-	p.pagers = pagers
+	p.pagers = ps
 
 	return p, nil
 }