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-rw-r--r--src/tools/entab/entab.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/tools/entab/entab.c b/src/tools/entab/entab.c
index 5aa94e6abf..b0019b30b2 100644
--- a/src/tools/entab/entab.c
+++ b/src/tools/entab/entab.c
@@ -94,7 +94,11 @@ char **argv;
in_file = stdin;
else
{
+#ifndef __CYGWIN32__
if ((in_file = fopen(*argv, "r")) == NULL)
+#else
+ if ((in_file = fopen(*argv, "rb")) == NULL)
+#endif
halt("PERROR: Can not open file %s\n", argv[0]);
argv++;
}