No input triggered this bug, but the match would accept "insert" and
"replace" keywords anywhere in the line not just at the beginning as was
intended.

Fixes: b2506e5504fed ("tests: Merge monitor and echo test suites")
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
 tests/monitor/run-tests.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/monitor/run-tests.sh b/tests/monitor/run-tests.sh
index 03091d1745212..4cbdee587f47c 100755
--- a/tests/monitor/run-tests.sh
+++ b/tests/monitor/run-tests.sh
@@ -52,7 +52,7 @@ echo_output_append() {
 		grep '^\(add\|replace\|insert\)' $command_file >>$output_file
 		return
 	}
-	[[ "$*" =~ ^add|replace|insert ]] && echo "$*" >>$output_file
+	[[ "$*" =~ ^(add|replace|insert) ]] && echo "$*" >>$output_file
 }
 json_output_filter() { # (filename)
 	# unify handle values
-- 
2.51.0