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[PR #22890] fix: support Chinese regex separators in text segmentation#22765 #30087

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opened 2026-02-21 20:46:49 -05:00 by yindo · 0 comments
yindo commented 2026-02-21 20:46:49 -05:00
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Original Pull Request: https://github.com/langgenius/dify/pull/22890

State: open
Merged: No

  • Remove re.escape() usage to preserve regex functionality
  • Replace str.split() with re.split() for regex support
  • Replace 'in' operator with re.search() for regex patterns
  • Add proper separator preservation logic for regex patterns
  • Filter out short chunks containing only symbols

Fixes #22765

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  1. Make sure you have read our contribution guidelines
  2. Ensure there is an associated issue and you have been assigned to it
  3. Use the correct syntax to link this PR: Fixes #<issue number>.

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Checklist

  • This change requires a documentation update, included: Dify Document
  • I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
  • I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
  • I've updated the documentation accordingly.
  • I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods
**Original Pull Request:** https://github.com/langgenius/dify/pull/22890 **State:** open **Merged:** No --- - Remove re.escape() usage to preserve regex functionality - Replace str.split() with re.split() for regex support - Replace 'in' operator with re.search() for regex patterns - Add proper separator preservation logic for regex patterns - Filter out short chunks containing only symbols Fixes #22765 > [!IMPORTANT] > > 1. Make sure you have read our [contribution guidelines](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) > 2. Ensure there is an associated issue and you have been assigned to it > 3. Use the correct syntax to link this PR: `Fixes #<issue number>`. ## Summary <!-- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change. --> ## Screenshots <img width="1151" height="515" alt="image" src="https://github.com/user-attachments/assets/89ffb97d-a8a9-49a8-9fc9-6e5f26c44e6f" /> | Before | After | |--------|-------| | ... | ... | ## Checklist - [ ] This change requires a documentation update, included: [Dify Document](https://github.com/langgenius/dify-docs) - [x] I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!) - [x] I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change. - [x] I've updated the documentation accordingly. - [x] I ran `dev/reformat`(backend) and `cd web && npx lint-staged`(frontend) to appease the lint gods
yindo added the pull-request label 2026-02-21 20:46:49 -05:00
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Reference: langgenius/dify#30087
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