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-rw-r--r--sys/src/cmd/grep/main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/cmd/grep/main.c b/sys/src/cmd/grep/main.c
index d17be9c59..9ef2ba6e8 100644
--- a/sys/src/cmd/grep/main.c
+++ b/sys/src/cmd/grep/main.c
@@ -91,7 +91,7 @@ search(char *file, int flag)
}
if(flags['b'])
- flag ^= Bflag; /* dont buffer output */
+ flag |= Bflag; /* dont buffer output */
if(flags['c'])
flag |= Cflag; /* count */
if(flags['h'])