grep: fix echo "aa" | busybox grep -F -w "a" (should not match)

function                                             old     new   delta
grep_file                                           1461    1470      +9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/testsuite/grep.tests b/testsuite/grep.tests
index ed4ba455e..d0b0d2767 100755
--- a/testsuite/grep.tests
+++ b/testsuite/grep.tests
@@ -165,6 +165,12 @@ testing "grep -w word doesn't match wordword" \
         "wordword\n" \
         ""
 
+testing "grep -F -w w doesn't match ww" \
+        "grep -F -w w input" \
+        "" \
+        "ww\n" \
+        ""
+
 testing "grep -w word match second word" \
         "grep -w word input" \
         "bword,word\n""wordb,word\n""bwordb,word\n" \