updated for version 7.4.643
Problem:    Using the default file format for Mac files. (Issue 77)
Solution:   Reset the try_mac counter in the right place. (Oswald)
diff --git a/src/fileio.c b/src/fileio.c
index 1d16ee8..388446a 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -2099,12 +2099,12 @@
 		/* First try finding a NL, for Dos and Unix */
 		if (try_dos || try_unix)
 		{
+		    /* Reset the carriage return counter. */
+		    if (try_mac)
+			try_mac = 1;
+
 		    for (p = ptr; p < ptr + size; ++p)
 		    {
-			/* Reset the carriage return counter. */
-			if (try_mac)
-			    try_mac = 1;
-
 			if (*p == NL)
 			{
 			    if (!try_unix