(Fstart_process): Remove /: from program name.

1 files changed, 14 insertions, 6 deletions

diff --git a/src/process.c b/src/process.c
index c4d95c6074f..0a1265f4709 100644
--- a/src/process.c
+++ b/src/process.c
@@ -1421,7 +1421,8 @@ usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS)  */)
 #else /* not VMS */
   new_argv = (unsigned char **) alloca ((nargs - 1) * sizeof (char *));
 
-  /* If program file name is not absolute, search our path for it */
+  /* If program file name is not absolute, search our path for it.
+     Put the name we will really use in TEM.  */
   if (!IS_DIRECTORY_SEP (SREF (program, 0))
       && !(SCHARS (program) > 1
            && IS_DEVICE_SEP (SREF (program, 1))))
@@ -1435,18 +1436,25 @@ usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS)  */)
       if (NILP (tem))
         report_file_error ("Searching for program", Fcons (program, Qnil));
       tem = Fexpand_file_name (tem, Qnil);
-      tem = ENCODE_FILE (tem);
-      new_argv[0] = SDATA (tem);
     }
   else
     {
       if (!NILP (Ffile_directory_p (program)))
         error ("Specified program for new process is a directory");
-
-      tem = ENCODE_FILE (program);
-      new_argv[0] = SDATA (tem);
+      tem = program;
     }
 
+  /* If program file name starts with /: for quoting a magic name,
+     discard that.  */
+  if (SBYTES (tem) > 2 && SREF (tem, 0) == '/'
+      && SREF (tem, 1) == ':')
+    tem = Fsubstring (tem, make_number (2), Qnil);
+
+  /* Encode the file name and put it in NEW_ARGV.
+     That's where the child will use it to execute the program.  */
+  tem = ENCODE_FILE (tem);
+  new_argv[0] = SDATA (tem);
+
   /* Here we encode arguments by the coding system used for sending
      data to the process.  We don't support using different coding
      systems for encoding arguments and for encoding data sent to the