xtermjs/xterm.js

Cannot type Shifted characters (e.g. #, ") or overlapping keys in Safari on macOS

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#5,374 创建于 2025年7月11日

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area/imebrowser/safarihelp wantedtype/bug

描述

Details

  • Browser and browser version: Safari 18.5
  • OS version: macOS 15.5
  • xterm.js version: 5.5.0

Steps to reproduce

  1. Open an xterm.js terminal on Safari (macOS 15.5) with a Japanese (JP) keyboard layout.
  2. Try typing Shift + 3 to input # — nothing appears.
  3. While still holding Shift, press 3 again — now # appears.
  4. Similarly, try typing Shift + 2 to input " — same behavior occurs.
  5. Next, press and hold the A key, then press the S key without releasing A.
  6. Only A appears in the terminal — S is ignored.
  7. If you release A before pressing S, both characters are input as expected.

This issue does not occur in Google Chrome on the same macOS system.

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@xterm/xterm@5.5.0/css/xterm.min.css">
        <script src="https://cdn.jsdelivr.net/npm/@xterm/xterm@5.5.0/lib/xterm.min.js"></script>
        <script>
            document.addEventListener('DOMContentLoaded', () => {
                const terminal = new Terminal();
                terminal.open(document.getElementById('terminal'));
                terminal.focus();
                terminal.onData((data) => {
                    terminal.write(data);
                });
            });
        </script>
    </head>
    <body>
        <div id="terminal"></div>
    </body>
</html>

贡献者指南

技术栈
typescriptjavascripthtmlcss
领域
frontend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
basic JavaScriptbrowser keyboard events
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
65
研究方向
Investigate how xterm.js handles keyboard events in Safari, focusing on the InputHandler class and key event listeners. Compare keydown/keyup behavior between Safari and Chrome for Mac Japanese keyboard layout. Look at the onData method and how shifted characters are processed. Consider using event.code vs event.key to handle overlapping keys. Consult relevant issues #5374 comments for any additional insights.
Cannot type Shifted characters (e.g. #, ") or overlapping keys in Safari on macOS · xtermjs/xterm.js#5374 | Good First Issue