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# Pull Request Template ## Description Fixes https://linear.app/chatwoot/issue/CW-6903/signature-delimiter-renders-as-h2-when-using-enter-line-before **1**. Fixes an issue where the signature delimiter `--` gets parsed as an H2 when using **Enter** (new paragraph) before or after it, causing it to render as a bold `\` in the message bubble. * Ensures `--` renders as plain text * Aligns renderer with parser behavior (both disable `lheading`) * Prevents stray `\` from appearing as heading text **2**. Also fixes a related editor issue where toggling signature **off** leaves behind a stray `\` or `-- \`. * Strips blank paragraph markers (`\`) and dangling hard breaks (`\<newline>`) from ProseMirror serializer * Applied in both `appendSignature` and `removeSignature` * Replaces `trimEnd()` with shared helpers (`trimTrailingBlanks` / `stripTrailingBlankMarkers`) ## Type of change - [x] Bug fix (non-breaking change which fixes an issue) ## How Has This Been Tested? #### Screenshots **Before** <img width="194" height="204" alt="image" src="https://github.com/user-attachments/assets/b286ab50-7f89-4910-a552-1568902b93b3" /> **After** <img width="194" height="220" alt="image" src="https://github.com/user-attachments/assets/658cd543-bce2-46e2-a319-35e5374f1aef" /> **Editor** https://linear.app/chatwoot/issue/CW-6903/signature-delimiter-renders-as-in-h2-when-using-enter-line#comment-5814b882 ### Steps #### Editor 1. Enable agent signature 2. Add and remove new lines around the signature using Enter/shift enter 3. Toggle signature off 4. Notice stray `\` or `-- \` remains #### Bubble 1. Enable agent signature 2. Send a message using Enter between lines 3. Verify `--` renders correctly (no H2, no bold `\`) ## Checklist: - [x] My code follows the style guidelines of this project - [x] I have performed a self-review of my code - [x] I have commented on my code, particularly in hard-to-understand areas - [ ] I have made corresponding changes to the documentation - [x] My changes generate no new warnings - [x] I have added tests that prove my fix is effective or that my feature works - [x] New and existing unit tests pass locally with my changes - [ ] Any dependent changes have been merged and published in downstream modules --------- Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>