all: Handle all errors

As reported by `errcheck`.

3 files changed, 18 insertions, 6 deletions

diff --git a/hugolib/hugo_sites.go b/hugolib/hugo_sites.go
index 9ef2dc91e..b18e66bac 100644
--- a/hugolib/hugo_sites.go
+++ b/hugolib/hugo_sites.go
@@ -551,7 +551,9 @@ func (s *Site) preparePagesForRender(cfg *BuildCfg) {
 					p.Content = helpers.BytesToHTML(workContentCopy)
 
 					if summaryContent == nil {
-						p.setAutoSummary()
+						if err := p.setAutoSummary(); err != nil {
+							s.Log.ERROR.Printf("Failed to set user auto summary for page %q: %s", p.pathOrTitle(), err)
+						}
 					}
 
 				} else {
diff --git a/hugolib/site.go b/hugolib/site.go
index 7aec4d4d3..ec3e1a4bd 100644
--- a/hugolib/site.go
+++ b/hugolib/site.go
@@ -637,7 +637,7 @@ type whatChanged struct {
 func (s *Site) RegisterMediaTypes() {
 	for _, mt := range s.mediaTypesConfig {
 		// The last one will win if there are any duplicates.
-		mime.AddExtensionType("."+mt.Suffix, mt.Type()+"; charset=utf-8")
+		_ = mime.AddExtensionType("."+mt.Suffix, mt.Type()+"; charset=utf-8")
 	}
 }
 
@@ -709,7 +709,9 @@ func (s *Site) reProcess(events []fsnotify.Event) (whatChanged, error) {
 	}
 
 	if len(dataChanged) > 0 {
-		s.readDataFromSourceFS()
+		if err := s.readDataFromSourceFS(); err != nil {
+			s.Log.ERROR.Println(err)
+		}
 	}
 
 	// If a content file changes, we need to reload only it and re-render the entire site.
@@ -1895,7 +1897,10 @@ func (s *Site) renderAndWriteXML(name string, dest string, d interface{}, layout
 		path = []byte(s)
 	}
 	transformer := transform.NewChain(transform.AbsURLInXML)
-	transformer.Apply(outBuffer, renderBuffer, path)
+	if err := transformer.Apply(outBuffer, renderBuffer, path); err != nil {
+		helpers.DistinctErrorLog.Println(err)
+		return nil
+	}
 
 	return s.publish(dest, outBuffer)
 
@@ -1943,7 +1948,10 @@ func (s *Site) renderAndWritePage(name string, dest string, p *PageOutput, layou
 	}
 
 	transformer := transform.NewChain(transformLinks...)
-	transformer.Apply(outBuffer, renderBuffer, path)
+	if err := transformer.Apply(outBuffer, renderBuffer, path); err != nil {
+		helpers.DistinctErrorLog.Println(err)
+		return nil
+	}
 
 	return s.publish(dest, outBuffer)
 }
diff --git a/hugolib/site_render.go b/hugolib/site_render.go
index de8b28723..6f0cf3b99 100644
--- a/hugolib/site_render.go
+++ b/hugolib/site_render.go
@@ -147,7 +147,9 @@ func (s *Site) renderPaginator(p *PageOutput) error {
 
 		// TODO(bep) output do better
 		link := newOutputFormat(p.Page, p.outputFormat).Permalink()
-		s.writeDestAlias(target, link, nil)
+		if err := s.writeDestAlias(target, link, nil); err != nil {
+			return err
+		}
 
 		pagers := p.paginator.Pagers()