* process.c (Fstart_process):

* callproc.c (Fcall_process): Handle the case where
Funhandled_file_name_directory returns nil.

1 files changed, 6 insertions, 3 deletions

diff --git a/src/callproc.c b/src/callproc.c
index a3b7b7afa4a..fdd1ee7988c 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -376,9 +376,12 @@ usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS)  */)
 
     GCPRO4 (infile, buffer, current_dir, error_file);
 
-    current_dir
-      = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir),
-                                Qnil);
+    current_dir = Funhandled_file_name_directory (current_dir);
+    if (NILP (current_dir))
+      /* If the file name handler says that current_dir is unreachable, use
+         a sensible default. */
+      current_dir = build_string ("~/");
+    current_dir = expand_and_dir_to_file (current_dir, Qnil);
     if (NILP (Ffile_accessible_directory_p (current_dir)))
       report_file_error ("Setting current directory",
                          Fcons (current_buffer->directory, Qnil));