1 files changed, 13 insertions, 4 deletions

diff --git a/src/callproc.c b/src/callproc.c
index 958ad19fb82..04484dd55e7 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -251,7 +251,10 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.")
             args2[0] = Qcall_process;
             for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
             coding_systems = Ffind_coding_system (nargs + 1, args2);
-            val = CONSP (coding_systems) ? XCONS (coding_systems)->cdr : Qnil;
+            if (CONSP (coding_systems))
+              val = XCONS (coding_systems)->cdr;
+            else if (CONSP (Vdefault_process_coding_system))
+              val = XCONS (Vdefault_process_coding_system)->cdr;
           }
         setup_coding_system (Fcheck_coding_system (val), &argument_coding);
       }
@@ -272,7 +275,10 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.")
                 for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
                 coding_systems = Ffind_coding_system (nargs + 1, args2);
               }
-            val = CONSP (coding_systems) ? XCONS (coding_systems)->car : Qnil;
+            if (CONSP (coding_systems))
+              val = XCONS (coding_systems)->car;
+            else if (CONSP (Vdefault_process_coding_system))
+              val = XCONS (Vdefault_process_coding_system)->car;
           }
         setup_coding_system (Fcheck_coding_system (val), &process_coding);
       }
@@ -775,10 +781,13 @@ If you quit, the process is killed with SIGINT, or SIGKILL if you quit again.")
         args2[0] = Qcall_process_region;
         for (i = 0; i < nargs; i++) args2[i + 1] = args[i];
         coding_systems = Ffind_coding_system (nargs + 1, args2);
-        val = CONSP (coding_systems) ? XCONS (coding_systems)->cdr : Qnil;
+        if (CONSP (coding_systems))
+          val = XCONS (coding_systems)->cdr;
+        else if (CONSP (Vdefault_process_coding_system))
+          val = XCONS (Vdefault_process_coding_system)->car;
       }
   specbind (intern ("coding-system-for-write"), val);
-  Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil, Qnil);
+  Fwrite_region (start, end, filename_string, Qnil, Qlambda, Qnil);
 
 #ifdef DOS_NT
   if (NILP (Vbinary_process_input))