From 29699274bb0e8f70b9bedad40ca2d03739318853 Mon Sep 17 00:00:00 2001
From: Jacob Richman <jacob314@gmail.com>
Date: Thu, 21 Aug 2025 16:43:56 -0700
Subject: feat(settings) support editing string settings. (#6732)

---
 .../cli/src/ui/components/shared/text-buffer.ts    | 54 +++-------------------
 1 file changed, 6 insertions(+), 48 deletions(-)

(limited to 'packages/cli/src/ui/components/shared/text-buffer.ts')

diff --git a/packages/cli/src/ui/components/shared/text-buffer.ts b/packages/cli/src/ui/components/shared/text-buffer.ts
index 93f6e360..389a4799 100644
--- a/packages/cli/src/ui/components/shared/text-buffer.ts
+++ b/packages/cli/src/ui/components/shared/text-buffer.ts
@@ -4,8 +4,6 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import stripAnsi from 'strip-ansi';
-import { stripVTControlCharacters } from 'util';
 import { spawnSync } from 'child_process';
 import fs from 'fs';
 import os from 'os';
@@ -13,7 +11,12 @@ import pathMod from 'path';
 import { useState, useCallback, useEffect, useMemo, useReducer } from 'react';
 import stringWidth from 'string-width';
 import { unescapePath } from '@google/gemini-cli-core';
-import { toCodePoints, cpLen, cpSlice } from '../../utils/textUtils.js';
+import {
+  toCodePoints,
+  cpLen,
+  cpSlice,
+  stripUnsafeCharacters,
+} from '../../utils/textUtils.js';
 import { handleVimAction, VimAction } from './vim-buffer-actions.js';
 
 export type Direction =
@@ -494,51 +497,6 @@ export const replaceRangeInternal = (
   };
 };
 
-/**
- * Strip characters that can break terminal rendering.
- *
- * Uses Node.js built-in stripVTControlCharacters to handle VT sequences,
- * then filters remaining control characters that can disrupt display.
- *
- * Characters stripped:
- * - ANSI escape sequences (via strip-ansi)
- * - VT control sequences (via Node.js util.stripVTControlCharacters)
- * - C0 control chars (0x00-0x1F) except CR/LF which are handled elsewhere
- * - C1 control chars (0x80-0x9F) that can cause display issues
- *
- * Characters preserved:
- * - All printable Unicode including emojis
- * - DEL (0x7F) - handled functionally by applyOperations, not a display issue
- * - CR/LF (0x0D/0x0A) - needed for line breaks
- */
-function stripUnsafeCharacters(str: string): string {
-  const strippedAnsi = stripAnsi(str);
-  const strippedVT = stripVTControlCharacters(strippedAnsi);
-
-  return toCodePoints(strippedVT)
-    .filter((char) => {
-      const code = char.codePointAt(0);
-      if (code === undefined) return false;
-
-      // Preserve CR/LF for line handling
-      if (code === 0x0a || code === 0x0d) return true;
-
-      // Remove C0 control chars (except CR/LF) that can break display
-      // Examples: BELL(0x07) makes noise, BS(0x08) moves cursor, VT(0x0B), FF(0x0C)
-      if (code >= 0x00 && code <= 0x1f) return false;
-
-      // Remove C1 control chars (0x80-0x9F) - legacy 8-bit control codes
-      if (code >= 0x80 && code <= 0x9f) return false;
-
-      // Preserve DEL (0x7F) - it's handled functionally by applyOperations as backspace
-      // and doesn't cause rendering issues when displayed
-
-      // Preserve all other characters including Unicode/emojis
-      return true;
-    })
-    .join('');
-}
-
 export interface Viewport {
   height: number;
   width: number;
-- 
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