wrap user-facing mfs.Lookup error (#10821)

gammazero · web-flow · commit 78ef5e9eebb8 · 2025-06-02T16:12:14.000-07:00
To avoid the blank Error: file does not exist and specify which file we failed to find. Error before: `Error: file does not exist` Error after: `Error: /my-cat-pic.jpg: file does not exist` Closes #8671
diff --git a/core/commands/files.go b/core/commands/files.go
@@ -724,7 +724,7 @@ Examples:
 
 		fsn, err := mfs.Lookup(nd.FilesRoot, path)
 		if err != nil {
-			return err
+			return fmt.Errorf("%s: %w", path, err)
 		}
 
 		fi, ok := fsn.(*mfs.File)

Original file line number	Diff line number	Diff line change
`@@ -724,7 +724,7 @@ Examples:`
`724`	`724`
`725`	`725`	`fsn, err := mfs.Lookup(nd.FilesRoot, path)`
`726`	`726`	`if err != nil {`
`727`		`- return err`
	`727`	`+ return fmt.Errorf("%s: %w", path, err)`
`728`	`728`	`}`
`729`	`729`
`730`	`730`	`fi, ok := fsn.(*mfs.File)`