fix: do not treat consecutive groups of 3 dashes in a line as document separators

Signed-off-by: Marvin Rösch <marvinroesch99@gmail.com>

pkg/action/action.go

@@ -162,8 +162,13 @@ func fixDocSeparators(content string) string {
 		}
 		// "---" must be at the start of a line: either idx==0 or preceded by '\n'.
 		if idx > 0 && remaining[idx-1] != '\n' {
-			b.WriteString(remaining[:idx+3])
-			remaining = remaining[idx+3:]
+			// Skip all remaining dashes in the line, otherwise they'll be considered as at the start of a line
+			nonDashIndex := idx + 3
+			for nonDashIndex < len(remaining) && remaining[nonDashIndex] == '-' {
+				nonDashIndex++
+			}
+			b.WriteString(remaining[:nonDashIndex])
+			remaining = remaining[nonDashIndex:]
 			continue
 		}
 		b.WriteString(remaining[:idx+3])

pkg/action/action_test.go

@@ -454,6 +454,11 @@ func TestFixDocSeparators(t *testing.T) {
 			input:    "data:\n  key: ---value\n",
 			expected: "data:\n  key: ---value\n",
 		},
+		{
+			name:     "multiple triple dashes in a value is not a separator",
+			input:    "data:\n  key: ---------value\n",
+			expected: "data:\n  key: ---------value\n",
+		},
 		{
 			name:     "realistic multi-doc template output",
 			input:    "apiVersion: v1\nkind: Deployment\n---\napiVersion: v1\nkind: Ingress\n---apiVersion: v1\nkind: Service\n",