Implement phase 1 foundations

internal/analysis/analysis_test.go

@@ -0,0 +1,10 @@
+package analysis
+
+import "testing"
+
+func TestSanitizeLine(t *testing.T) {
+	got := sanitizeLine(" error\nwith\rspaces ")
+	if got != "error with spaces" {
+		t.Fatalf("got %q", got)
+	}
+}