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Fix mention pills by allowing custom URL schemes in Lexical LinkNode

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The previous fix (validateUrl on linkPlugin) only affected the link dialog,
not the markdown-to-Lexical import path. Lexical's LinkNode.sanitizeUrl()
converts agent:// and project:// URLs to about:blank because they aren't
in its allowlist. Override the prototype method to preserve these schemes
so mention chips render correctly.

Co-Authored-By: Paperclip <noreply@paperclip.ing>
This commit is contained in:
dotta 2026-03-21 16:39:12 -05:00
parent 49ace2faf9
commit 0e8e162cd5
3 changed files with 19 additions and 4 deletions
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11
ui/src/components/MarkdownEditor.tsx
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@ -26,11 +26,22 @@ import {
thematicBreakPlugin,
type RealmPlugin,
} from "@mdxeditor/editor";
import { LinkNode } from "@lexical/link";
import { buildAgentMentionHref, buildProjectMentionHref } from "@paperclipai/shared";
import { AgentIcon } from "./AgentIconPicker";
import { applyMentionChipDecoration, clearMentionChipDecoration, parseMentionChipHref } from "../lib/mention-chips";
import { cn } from "../lib/utils";
/* ---- Allow custom mention URL schemes in Lexical's LinkNode ---- */
// Lexical only allows http(s)/mailto/sms/tel by default, converting
// everything else to about:blank. We need agent:// and project://
// to survive the markdown→Lexical import so mention chips render.
const _origSanitizeUrl = LinkNode.prototype.sanitizeUrl;
LinkNode.prototype.sanitizeUrl = function sanitizeUrl(url: string): string {
if (/^(agent|project):\/\//.test(url)) return url;
return _origSanitizeUrl.call(this, url);
};
/* ---- Mention types ---- */
export interface MentionOption {