feat: Add multiline support for log messages

src/log_helpers.sh

@@ -7,19 +7,34 @@ function echo_err() {
 }
 
 function _log_x() {
+	local prefix=""
+	local lines=""
+
 	if [[ -n "$GITHUB_ACTIONS" ]]; then
+		prefix="::${1}"
+
 		if [[ -n "$3" ]]; then
-			echo "::${1} title=${2}::$3"
+			prefix="$prefix title=${2}::"
+			lines="$3"
 		else
-			echo "::${1}::$2"
+			prefix="$prefix::"
+			lines="$2"
 		fi
 	else
+		prefix="[${1^^}]"
+
 		if [[ -n "$3" ]]; then
-			echo_err "[${1^^}] ${2}: ${3}"
+			prefix="$prefix ${2}: "
+			lines="$3"
 		else
-			echo_err "[${1^^}] ${2}"
+			prefix="$prefix "
+			lines="$2"
 		fi
 	fi
+
+	for line in $(echo -e "$lines"); do
+		echo_err "${prefix}${line}"
+	done
 }
 
 function log_error() {

test/log_helpers.bats

@@ -25,6 +25,23 @@ teardown() {
 	assert_output "[ERROR] Foo"
 }
 
+@test "log_error should print multiple errors when multiline message provided (using \n)" {
+	run log_error "Foo" "Bar\nBaz"
+
+	assert_success
+	assert_output "[ERROR] Foo: Bar
+[ERROR] Foo: Baz"
+}
+
+@test "log_error should print multiple errors when multiline message provided (using multiple arguments)" {
+	run log_error "Foo" "Bar
+Baz"
+
+	assert_success
+	assert_output "[ERROR] Foo: Bar
+[ERROR] Foo: Baz"
+}
+
 @test "log_error should print GHA error command with title" {
 	GITHUB_ACTIONS="true"
 
@@ -43,6 +60,27 @@ teardown() {
 	assert_output "::error::Foo"
 }
 
+@test "log_error should print GHA error command with multiple errors when multiline message provided (using \n)" {
+	GITHUB_ACTIONS="true"
+
+	run log_error "Foo" "Bar\nBaz"
+
+	assert_success
+	assert_output "::error title=Foo::Bar
+::error title=Foo::Baz"
+}
+
+@test "log_error should print GHA error command with multiple errors when multiline message provided (using multiple arguments)" {
+	GITHUB_ACTIONS="true"
+
+	run log_error "Foo" "Bar
+Baz"
+
+	assert_success
+	assert_output "::error title=Foo::Bar
+::error title=Foo::Baz"
+}
+
 @test "log_warning should print warning with title" {
 	run log_warning "Foo" "Bar"