--- a/src/Pure/Build/browser_info.scala Wed Feb 12 14:26:43 2025 +0100
+++ b/src/Pure/Build/browser_info.scala Wed Feb 12 14:28:32 2025 +0100
@@ -638,7 +638,7 @@
val html = context.source(node_context(file, file_dir).make_html(thy_elements, xml))
val path = Path.explode(file)
- val src_path = File.relative_path(master_dir, path).getOrElse(path)
+ val src_path = File.perhaps_relative_path(master_dir, path)
val file_title = "File " + Symbol.cartouche_decoded(src_path.implode_short)
HTML.write_document(file_dir, file_html.file_name,