Move cursor tracking out of the doc print buffer (#18202)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

benchmarks/string-buffer-compress.js

@@ -0,0 +1,51 @@
+import assert from "node:assert/strict";
+import { runBenchmark } from "./utilities.js";
+
+for (const size of [1e1, 1e2, 1e3, 1e4, 1e5]) {
+  const maxLength = 10;
+  const seperator = "|";
+  const strings = Array.from({ length: size }, () => "_");
+  const expected = {
+    length: strings.join(seperator).length,
+    times: Math.floor(size / maxLength) - 1,
+  };
+
+  await runBenchmark(
+    {
+      name: `String buffer compress (${size} strings)`,
+      assert: (result) => assert.deepEqual(result, expected),
+    },
+    {
+      "Array#splice()"() {
+        const result = [];
+        let times = 0;
+
+        for (let index = 0; index < strings.length; index++) {
+          result.push(strings[index]);
+          if (result.length > maxLength) {
+            result.splice(0, Number.POSITIVE_INFINITY, result.join(seperator));
+            assert.equal(result.length, 1);
+            times++;
+          }
+        }
+
+        return { length: result.join(seperator).length, times };
+      },
+      "let reassign"() {
+        let result = [];
+        let times = 0;
+
+        for (let index = 0; index < strings.length; index++) {
+          result.push(strings[index]);
+          if (result.length > maxLength) {
+            result = [result.join(seperator)];
+            assert.equal(result.length, 1);
+            times++;
+          }
+        }
+
+        return { length: result.join(seperator).length, times };
+      },
+    },
+  );
+}