commands: Add "hugo config mounts" command

This prints the effective file mounts in a project.

Fixes #6144

3 files changed, 8 insertions, 9 deletions

diff --git a/hugolib/config.go b/hugolib/config.go
index 07a8d4100..8c2e44c10 100644
--- a/hugolib/config.go
+++ b/hugolib/config.go
@@ -217,7 +217,7 @@ func LoadConfig(d ConfigSourceDescriptor, doWithConfig ...func(cfg config.Provid
 		mods := m.ActiveModules
 
 		// Apply default project mounts.
-		if err := modules.ApplyProjectConfigDefaults(v, mods[len(mods)-1]); err != nil {
+		if err := modules.ApplyProjectConfigDefaults(v, mods[0]); err != nil {
 			return err
 		}
 
diff --git a/hugolib/filesystems/basefs.go b/hugolib/filesystems/basefs.go
index e550d7f35..2d8f54d65 100644
--- a/hugolib/filesystems/basefs.go
+++ b/hugolib/filesystems/basefs.go
@@ -452,20 +452,19 @@ func (b *sourceFilesystemsBuilder) createMainOverlayFs(p *paths.Paths) (*filesys
 
 	// The theme components are ordered from left to right.
 	// We need to revert it to get the
-	// overlay logic below working as expected, with the project on top (last).
-	for i, mod := range mods {
+	// overlay logic below working as expected, with the project on top.
+	j := 0
+	for i := len(mods) - 1; i >= 0; i-- {
+		mod := mods[i]
 		dir := mod.Dir()
 
-		if i < len(mods)-1 {
-			i = len(mods) - 2 - i
-		}
-
 		isMainProject := mod.Owner() == nil
-		modsReversed[i] = mountsDescriptor{
+		modsReversed[j] = mountsDescriptor{
 			Module:        mod,
 			dir:           dir,
 			isMainProject: isMainProject,
 		}
+		j++
 	}
 
 	err := b.createOverlayFs(collector, modsReversed)
diff --git a/hugolib/filesystems/basefs_test.go b/hugolib/filesystems/basefs_test.go
index e4efa68e2..3b4e4cd16 100644
--- a/hugolib/filesystems/basefs_test.go
+++ b/hugolib/filesystems/basefs_test.go
@@ -62,7 +62,7 @@ func initConfig(fs afero.Fs, cfg config.Provider) error {
 		return err
 	}
 
-	if err := modules.ApplyProjectConfigDefaults(cfg, moduleConfig.ActiveModules[len(moduleConfig.ActiveModules)-1]); err != nil {
+	if err := modules.ApplyProjectConfigDefaults(cfg, moduleConfig.ActiveModules[0]); err != nil {
 		return err
 	}