# Fix copy button not working for REPL error output \(\#40669\) · gitcafe/zed

[View on GitCafe](https://git.cafe/gitcafe/zed/commit/4778d61bddb0b14cb4f644e8c2df4c7e1add6857)

Repository: [gitcafe/zed](https://git.cafe/gitcafe/zed)

Visibility: public

Requested revision: 4778d61bddb0b14cb4f644e8c2df4c7e1add6857

Requested commit: 4778d61bddb0b14cb4f644e8c2df4c7e1add6857

Commit: 4778d61bddb0b14cb4f644e8c2df4c7e1add6857

Tree: 5fa320ea0ec1de5be3d7b4dd5f95c52f5e5d8839

Author: h-michaelson20

Committer: GitHub

## Message

```
Fix copy button not working for REPL error output (#40669)

## Description

Fixes the copy button functionality in REPL interactive mode error
output sections.

When executing Python code that produces errors in the REPL (e.g.,
`NameError`), the copy button in the error output section was
unresponsive. The stdout/stderr copy button worked correctly, but the
error traceback section copy button had no effect when clicked.

Fixes #40207

## Changes

Modified the following:
src/outputs.rs: Fixed context issues in render_output_controls by
replacing cx.listener() with simple closures, and added custom button
implementation for ErrorOutput that copies/opens the complete error
(name + message + traceback)
src/outputs/plain.rs: Made full_text() method public to allow access
from button handlers
src/outputs/user_error.rs: Added Clone derive to ErrorView struct and
removed a couple pieces of commented code

## Why This Matters

The copy button was clearly broken and it is useful to have for REPL
workflows. Users could potentially need to copy error messages for a
variety of reasons.

## Testing

See attached demo for proof that the fix is working as intended. (this
is my first ever commit, if there are additional test cases I need to
write or run, please let me know!)


https://github.com/user-attachments/assets/da158205-4119-47eb-a271-196ef8d196e4

Release Notes:

- Fixed copy button not working for REPL error output
```

## Parents

- [46c5d515bf7d79948b112533296326b9bacc1bbc](https://git.cafe/gitcafe/zed/commit/46c5d515bf7d79948b112533296326b9bacc1bbc?format=markdown)

[Source at this commit](https://git.cafe/gitcafe/zed/tree/4778d61bddb0b14cb4f644e8c2df4c7e1add6857?format=markdown)