hugolib: Re-work "fast render" logic in the new flow

Note that this fixes some "live reload" issues recently introduced in non-released code.

Closes #5811
See #5784

3 files changed, 9 insertions, 7 deletions

diff --git a/hugolib/hugo_sites.go b/hugolib/hugo_sites.go
index 9fe2a5bdb..caa9a4bc2 100644
--- a/hugolib/hugo_sites.go
+++ b/hugolib/hugo_sites.go
@@ -569,7 +569,6 @@ func (cfg *BuildCfg) shouldRender(p *pageState) bool {
 		return false
 	}
 	if p.forceRender {
-		p.forceRender = false
 		return true
 	}
 
@@ -577,6 +576,10 @@ func (cfg *BuildCfg) shouldRender(p *pageState) bool {
 		return true
 	}
 
+	if cfg.RecentlyVisited[p.RelPermalink()] {
+		return true
+	}
+
 	if cfg.whatChanged != nil && !p.File().IsZero() {
 		return cfg.whatChanged.files[p.File().Filename()]
 	}
diff --git a/hugolib/hugo_sites_build.go b/hugolib/hugo_sites_build.go
index 214f72c5f..91dfb9a37 100644
--- a/hugolib/hugo_sites_build.go
+++ b/hugolib/hugo_sites_build.go
@@ -288,10 +288,8 @@ func (h *HugoSites) render(config *BuildCfg) error {
 					// needs this set.
 					s2.rc = &siteRenderingContext{Format: renderFormat}
 
-					if !config.PartialReRender {
-						if err := s2.preparePagesForRender(siteRenderContext.sitesOutIdx); err != nil {
-							return err
-						}
+					if err := s2.preparePagesForRender(siteRenderContext.sitesOutIdx); err != nil {
+						return err
 					}
 				}
 
diff --git a/hugolib/pagebundler.go b/hugolib/pagebundler.go
index 546b125ff..682221d8c 100644
--- a/hugolib/pagebundler.go
+++ b/hugolib/pagebundler.go
@@ -110,8 +110,9 @@ func (s *siteContentProcessor) process(ctx context.Context) error {
 				panic(fmt.Sprintf("invalid page site: %v vs %v", p.s, s))
 			}
 
-			if s.partialBuild {
-				p.forceRender = true
+			p.forceRender = s.partialBuild
+
+			if p.forceRender {
 				s.site.replacePage(p)
 			} else {
 				s.site.addPage(p)