diff -r 12abaffb0346 -r 932b2a7139e2 src/Pure/General/path.scala
--- a/src/Pure/General/path.scala	Sun Nov 12 12:26:08 2023 +0100
+++ b/src/Pure/General/path.scala	Sun Nov 12 12:33:22 2023 +0100
@@ -327,8 +327,8 @@
   def is_file: Boolean = file.isFile
   def is_dir: Boolean = file.isDirectory
 
-  def check_file: Path = if (is_file) this else error("No such file: " + this)
-  def check_dir: Path = if (is_dir) this else error("No such directory: " + this)
+  def check_file: Path = if (is_file) this else error("No such file: " + this.expand)
+  def check_dir: Path = if (is_dir) this else error("No such directory: " + this.expand)
 
   def java_path: JPath = file.toPath