hugolib: Correctly identify "my_index_page.md"

The above example was earlier identified as a section page and not a regular page.

Fixes #3234

1 files changed, 8 insertions, 1 deletions

diff --git a/hugolib/page.go b/hugolib/page.go
index e23434a78..141a71420 100644
--- a/hugolib/page.go
+++ b/hugolib/page.go
@@ -1859,8 +1859,15 @@ func sectionsFromFilename(filename string) []string {
 	return sections
 }
 
+const (
+	regularPageFileNameDoesNotStartWith = "_index"
+
+	// There can be "my_regular_index_page.md but not /_index_file.md
+	regularPageFileNameDoesNotContain = helpers.FilePathSeparator + regularPageFileNameDoesNotStartWith
+)
+
 func kindFromFilename(filename string) string {
-	if !strings.Contains(filename, "_index") {
+	if !strings.HasPrefix(filename, regularPageFileNameDoesNotStartWith) && !strings.Contains(filename, regularPageFileNameDoesNotContain) {
 		return KindPage
 	}