Fix hashtag length check to use graphemeLen for accurate length detec…

…tion based on grapheme units instead of UTF-16 code points
bluesky-social · Nov 23, 2024 · e44733d · e44733d
1 parent 60df3fc
commit e44733d
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/packages/api/src/rich-text/detection.ts b/packages/api/src/rich-text/detection.ts
@@ -7,6 +7,7 @@ import {
   TAG_REGEX,
   TRAILING_PUNCTUATION_REGEX,
 } from './util'
+import { graphemeLen } from '@atproto/common-web'
 
 export type Facet = AppBskyRichtextFacet.Main
 
@@ -85,7 +86,7 @@ export function detectFacets(text: UnicodeString): Facet[] | undefined {
       // strip ending punctuation and any spaces
       tag = tag.trim().replace(TRAILING_PUNCTUATION_REGEX, '')
 
-      if (tag.length === 0 || tag.length > 64) continue
+      if (tag.length === 0 || graphemeLen(tag) > 64) continue
 
       const index = match.index + leading.length