(read_history_range, history_truncate_file, history_do_write) [__MSDOS__]:

Allow for a `_' to replace the leading dot in hard-wrired file names.

1 files changed, 35 insertions, 0 deletions

diff --git a/readline/histfile.c b/readline/histfile.c
index 3325b7fc1f7..9437e992566 100644
--- a/readline/histfile.c
+++ b/readline/histfile.c
@@ -140,6 +140,16 @@ read_history_range (filename, from, to)
   input = history_filename (filename);
   file = open (input, O_RDONLY|O_BINARY, 0666);
 
+
+#ifdef __MSDOS__
+  /* MSDOS doesn't allow leading dots in file names.  Try again
+     with the dot replaced by an underscore.  */
+  if (file < 0 && !filename)
+    {
+      input[strlen (input) - 8] = '_';
+      file = open (input, O_RDONLY|O_BINARY, 0666);
+    }
+#endif
   if ((file < 0) || (fstat (file, &finfo) == -1))
     goto error_and_exit;
 
@@ -233,6 +243,16 @@ history_truncate_file (fname, lines)
   filename = history_filename (fname);
   file = open (filename, O_RDONLY|O_BINARY, 0666);
 
+#ifdef __MSDOS__
+  /* MSDOS doesn't allow leading dots in file names.  Try again
+     with the dot replaced by an underscore.  */
+  if (file < 0 && !fname)
+    {
+      filename[strlen (filename) - 8] = '_';
+      file = open (filename, O_RDONLY|O_BINARY, 0666);
+    }
+#endif
+
   if (file == -1 || fstat (file, &finfo) == -1)
     goto truncate_exit;
 
@@ -314,8 +334,23 @@ history_do_write (filename, nelements, overwrite)
 
   if ((file = open (output, mode, 0600)) == -1)
     {
+#ifdef __MSDOS__
+      /* MSDOS doesn't allow leading dots in file names.  If this is
+	 the default file name, try again with the dot replaced by an
+	 underscore.  */
+      if (!filename)
+	{
+	  output[strlen (output) - 8] = '_';
+	  if ((file = open (output, mode, 0600)) == -1)
+	    {
+	      FREE (output);
+	      return (errno);
+	    }
+	}
+#else
       FREE (output);
       return (errno);
+#endif
     }
 
   if (nelements > history_length)