From 230faf58a8da5f56acbde7ab46d2c4a467054dd5 Mon Sep 17 00:00:00 2001
From: Lilleman auf Larv <lilleman@larvit.se>
Date: Sun, 11 Oct 2026 15:10:23 +0200
Subject: [PATCH] Answer stability round 8: a mounted data path names a file
 where it is on disk

---
 internal/datafiles/datafiles.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/internal/datafiles/datafiles.go b/internal/datafiles/datafiles.go
index 4e5ea4f..be80b32 100644
--- a/internal/datafiles/datafiles.go
+++ b/internal/datafiles/datafiles.go
@@ -48,10 +48,15 @@ type Category struct {
 // ReadRows reads a rows file beside the category.
 func (c Category) ReadRows(name string) (string, error) { return c.rows.read(name) }
 
+// labelled is the file p as errors name it: under the source's label, as the labelled tree
+// spells it, below any mount.
 func (s Source) labelled(p string) string {
 	if s.label == "" {
 		return p
 	}
+	if m, isMounted := s.fsys.(mounted); isMounted {
+		p, _ = m.inner(p)
+	}
 	return path.Join(s.label, p)
 }