From 99de3eeff78c778aac2e8cec376fdf4eba3ac572 Mon Sep 17 00:00:00 2001
From: suyao <sy20010504@gmail.com>
Date: Fri, 24 Oct 2025 04:43:56 +0800
Subject: [PATCH] Improve paste behavior to preserve inline text formatting

- Insert plain text when pasting mid-line to avoid unwanted line breaks
- Only convert markdown to HTML when pasting at line start or in empty paragraphs
- Disable automatic line break conversion in markdown parser to prevent extra paragraphs
---
 .../src/components/RichEditor/useRichEditor.ts     | 14 +++++++++-----
 src/renderer/src/utils/markdownConverter.ts        |  2 +-
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/renderer/src/components/RichEditor/useRichEditor.ts b/src/renderer/src/components/RichEditor/useRichEditor.ts
index 576162fac7..536e7620bb 100644
--- a/src/renderer/src/components/RichEditor/useRichEditor.ts
+++ b/src/renderer/src/components/RichEditor/useRichEditor.ts
@@ -421,17 +421,21 @@ export const useRichEditor = (options: UseRichEditorOptions = {}): UseRichEditor
         // Default behavior for non-code blocks
         const text = event.clipboardData?.getData('text/plain') ?? ''
         if (text) {
-          const html = markdownToHtml(text)
           const { $from } = selection
           const atStartOfLine = $from.parentOffset === 0
           const inEmptyParagraph = $from.parent.type.name === 'paragraph' && $from.parent.textContent === ''
 
+          // If pasting in the middle of a line, insert as plain text to avoid unwanted line breaks
           if (!atStartOfLine && !inEmptyParagraph) {
-            const cleanHtml = html.replace(/^<p>(.*?)<\/p>/s, '$1')
-            editor.commands.insertContent(cleanHtml)
-          } else {
-            editor.commands.insertContent(html)
+            // Insert plain text without creating new paragraphs
+            const tr = view.state.tr.insertText(text, selection.from, selection.to)
+            view.dispatch(tr)
+            return true
           }
+
+          // At start of line or in empty paragraph: convert markdown to HTML and insert
+          const html = markdownToHtml(text)
+          editor.commands.insertContent(html)
           onPaste?.(html)
           return true
         }
diff --git a/src/renderer/src/utils/markdownConverter.ts b/src/renderer/src/utils/markdownConverter.ts
index 56f48cd465..51d684612d 100644
--- a/src/renderer/src/utils/markdownConverter.ts
+++ b/src/renderer/src/utils/markdownConverter.ts
@@ -81,7 +81,7 @@ export interface TaskListOptions {
 const md = new MarkdownIt({
   html: true, // Enable HTML tags in source
   xhtmlOut: true, // Use '>' for single tags (<br> instead of <br />)
-  breaks: true, // Preserve line breaks when pasting text
+  breaks: false,
   linkify: false, // Autoconvert URL-like text to links
   typographer: false // Enable smartypants and other sweet transforms
 })