[PR #23451] [CLOSED] fix: preserve blank lines in code blocks when submitting messages #27200

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GiteaMirror · 2026-04-20T06:55:51-05:00

GiteaMirror commented

2026-04-20 06:55:51 -05:00

📋 Pull Request Information

Original PR: https://github.com/open-webui/open-webui/pull/23451
Author: @weyseing
Created: 4/6/2026
Status: ❌ Closed

Base: dev ← Head: fix/preserve-codeblock-newlines

📝 Commits (1)

743eef5 fix: preserve blank lines in code blocks when submitting messages

📊 Changes

1 file changed (+2 additions, -2 deletions)

View changed files

📝 src/lib/components/chat/Chat.svelte (+2 -2)

📄 Description

Summary

Removed .replaceAll('\n\n', '\n') from both on:submit handlers in Chat.svelte that blindly stripped all double newlines from message content before passing it to submitHandler
This was destroying intentional blank lines inside code blocks (and elsewhere), causing pasted/typed code to lose its formatting after submission

Steps to Reproduce (before fix)

Open a chat and type a message containing a code block with blank lines:

```python
def hello():
    print("hello")

    x = 1

    return x
```

Send the message
Bug: The blank lines inside the code block disappear — the code is collapsed together

Root Cause

In src/lib/components/chat/Chat.svelte, both submit handlers (lines 2954 and 2997) called:

submitHandler(e.detail.replaceAll('\n\n', '\n'));

This replaced all double newlines with single newlines across the entire message — including inside code blocks where blank lines are semantically meaningful.

Fix

Pass e.detail directly to submitHandler without stripping newlines:

submitHandler(e.detail);

Testing

Verified code blocks with blank lines are preserved after sending
Verified normal messages still work correctly
Tested with Ollama (llama3.2) via Docker Compose

Fixes #20302

By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/open-webui/open-webui/pull/23451 **Author:** [@weyseing](https://github.com/weyseing) **Created:** 4/6/2026 **Status:** ❌ Closed **Base:** `dev` ← **Head:** `fix/preserve-codeblock-newlines` --- ### 📝 Commits (1) - [`743eef5`](https://github.com/open-webui/open-webui/commit/743eef55a5df40d65dfdaf0629f81e2d1a2cf47b) fix: preserve blank lines in code blocks when submitting messages ### 📊 Changes **1 file changed** (+2 additions, -2 deletions) <details> <summary>View changed files</summary> 📝 `src/lib/components/chat/Chat.svelte` (+2 -2) </details> ### 📄 Description ## Summary - Removed `.replaceAll('\n\n', '\n')` from both `on:submit` handlers in `Chat.svelte` that blindly stripped all double newlines from message content before passing it to `submitHandler` - This was destroying intentional blank lines inside code blocks (and elsewhere), causing pasted/typed code to lose its formatting after submission ## Steps to Reproduce (before fix) 1. Open a chat and type a message containing a code block with blank lines: ```` ```python def hello(): print("hello") x = 1 return x ``` ```` 2. Send the message 3. **Bug:** The blank lines inside the code block disappear — the code is collapsed together ## Root Cause In `src/lib/components/chat/Chat.svelte`, both submit handlers (lines 2954 and 2997) called: ```javascript submitHandler(e.detail.replaceAll('\n\n', '\n')); ``` This replaced **all** double newlines with single newlines across the entire message — including inside code blocks where blank lines are semantically meaningful. ## Fix Pass `e.detail` directly to `submitHandler` without stripping newlines: ```javascript submitHandler(e.detail); ``` ## Testing - Verified code blocks with blank lines are preserved after sending - Verified normal messages still work correctly - Tested with Ollama (llama3.2) via Docker Compose Fixes #20302 --- - [x] By submitting this pull request, I confirm that I have read and fully agree to the [Contributor License Agreement (CLA)](https://github.com/open-webui/open-webui/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT), and I am providing my contributions under its terms. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

GiteaMirror added the pull-request label 2026-04-20 06:55:51 -05:00

GiteaMirror closed this issue

2026-04-20 06:55:52 -05:00

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Reference: github-starred/open-webui#27200