Fix boundaries around mentions

api/paidAction/lib/item.js

@@ -3,7 +3,9 @@ import { deleteReminders, getDeleteAt, getRemindAt } from '@/lib/item'
 import { parseInternalLinks } from '@/lib/url'
 
 export async function getMentions ({ text }, { me, tx }) {
-  const mentionPattern = /\B@[\w_]+/gi
+  // match any "@username" at start of line / with leading whitespace or end of line / with trailing whitespace
+  // ( trailing paths like "@username/all" are also matched with a non-capturing group )
+  const mentionPattern = /(?<=\s|^)@([\w_]+)(?:\/[\w_]+)(?=\s|$)/gi
   const names = text.match(mentionPattern)?.map(m => m.slice(1))
   if (names?.length > 0) {
     const users = await tx.user.findMany({

lib/rehype-sn.js

@@ -3,10 +3,9 @@ import { parseEmbedUrl, parseInternalLinks } from './url'
 import { slug } from 'github-slugger'
 import { toString } from 'mdast-util-to-string'
 
-const userGroup = '[\\w_]+'
 const subGroup = '[A-Za-z][\\w_]+'
 
-const mentionRegex = new RegExp('@(' + userGroup + '(?:\\/' + userGroup + ')?)', 'gi')
+const mentionRegex = /(?<=\s|^)@([\w_]+(?:\/([\w_]+)?)?)(?=\s|$)/gi
 const subRegex = new RegExp('~(' + subGroup + '(?:\\/' + subGroup + ')?)', 'gi')
 const nostrIdRegex = /\b((npub1|nevent1|nprofile1|note1|naddr1)[02-9ac-hj-np-z]+)\b/g