Describe the issue
Hello,
I found an issue and prepared a minimal HTML demo to reproduce it.
Environment
windows 11
Chrome 146.0.7680.165
@codemirror/state 6.6.0
@codemirror/view 6.40.0
@codemirror/language 6.12.2
Description
When using a non‑English input method (for example, a Chinese IME) with the bracketMatching extension enabled, a runtime error is logged in the browser console on the very first keystroke in the editor.
The error does not occur when using an English input method.
I noticed that issue #1684 reports a similar problem, so this may be related or a duplicate.
Open the provided minimal demo.
Details
<!doctype html>
<html lang="zh-CN">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>CodeMirror bracketMatching Demo</title>
<style>
#editor {
height: 320px;
border: 1px solid #ddd;
border-radius: 6px;
}
</style>
</head>
<body>
<h3>CodeMirror only bracketMatching demo</h3>
<div id="editor"></div>
<script type="module">
import { EditorState } from "https://esm.sh/@codemirror/state@6.6.0"
import { EditorView } from "https://esm.sh/@codemirror/view@6.40.0"
import { bracketMatching } from "https://esm.sh/@codemirror/language@6.12.2"
const doc = "demo"
const state = EditorState.create({
doc,
extensions: [bracketMatching()],
})
const view = new EditorView({
state,
parent: document.getElementById("editor"),
})
window.cmView = view
</script>
</body>
</html>Switch your input method to a non‑English IME (e.g., Chinese).
Focus the editor and type a character (the first keystroke).
Observe the runtime error in the browser console.
index.js:1356 CodeMirror plugin crashed: RangeError: Position 5 is out of range for changeset of length 4
at s.mapPos (index.js:758:19)
at s.map (index.js:3101:33)
at s.map (index.js:3236:45)
at F.fromClass.decorations.update (index.js:1887:53)
at jt.update (index.js:1467:32)
at s.updatePlugins (index.js:8036:29)
at s.update (index.js:7934:22)
at s.dispatchTransactions (index.js:7833:28)
at s.dispatch (index.js:7860:14)
at as (index.js:4295:14)
Question
Is this a known limitation/expected behavior, or is it a bug? I can attach the exact console error message, stack trace, and/or a short screen recording if that would help.
Thank you.
Browser and platform
No response
Reproduction link
No response
Describe the issue
Hello,
I found an issue and prepared a minimal HTML demo to reproduce it.
Environment
windows 11
Chrome
146.0.7680.165@codemirror/state
6.6.0@codemirror/view
6.40.0@codemirror/language
6.12.2Description
When using a non‑English input method (for example, a Chinese IME) with the bracketMatching extension enabled, a runtime error is logged in the browser console on the very first keystroke in the editor.
The error does not occur when using an English input method.
I noticed that issue #1684 reports a similar problem, so this may be related or a duplicate.
Open the provided minimal demo.
Details
Switch your input method to a non‑English IME (e.g., Chinese).
Focus the editor and type a character (the first keystroke).
Observe the runtime error in the browser console.
Question
Is this a known limitation/expected behavior, or is it a bug? I can attach the exact console error message, stack trace, and/or a short screen recording if that would help.
Thank you.
Browser and platform
No response
Reproduction link
No response