diff --git a/findutils/grep.c b/findutils/grep.c index 5b8644c36..84a6f7b1c 100644 --- a/findutils/grep.c +++ b/findutils/grep.c @@ -762,8 +762,9 @@ int grep_main(int argc UNUSED_PARAM, char **argv) if (option_mask32 & OPT_f) { load_regexes_from_file(fopt); if (!pattern_head) { /* -f EMPTY_FILE? */ - /* GNU grep treats it as "nothing matches" */ - llist_add_to(&pattern_head, new_grep_list_data((char*) "", 0)); + /* GNU grep treats it as "nothing matches" except when -x */ + const char *data = (option_mask32 & OPT_x) ? ".*" : ""; + llist_add_to(&pattern_head, new_grep_list_data((char*)data, 0)); invert_search ^= 1; } } diff --git a/testsuite/grep.tests b/testsuite/grep.tests index 26f8e69cf..9c1f35499 100755 --- a/testsuite/grep.tests +++ b/testsuite/grep.tests @@ -129,6 +129,12 @@ testing "grep -v -f EMPTY_FILE" \ "" \ "test\n" +testing "grep -vxf EMPTY_FILE" \ + "grep -vxf input" \ + "test\n" \ + "" \ + "test\n" + testing "grep -Fw matches only words" \ "grep -Fw foo input" \ "" \