Support "in:public" search filter (#26976)

app/javascript/mastodon/features/compose/components/search.jsx

@@ -64,7 +64,7 @@ class Search extends PureComponent {
     { label: <><mark>before:</mark> <FormattedMessage id='search_popout.specific_date' defaultMessage='specific date' /></>, action: e => { e.preventDefault(); this._insertText('before:'); } },
     { label: <><mark>during:</mark> <FormattedMessage id='search_popout.specific_date' defaultMessage='specific date' /></>, action: e => { e.preventDefault(); this._insertText('during:'); } },
     { label: <><mark>after:</mark> <FormattedMessage id='search_popout.specific_date' defaultMessage='specific date' /></>, action: e => { e.preventDefault(); this._insertText('after:'); } },
-    { label: <><mark>in:</mark> <FormattedList type='disjunction' value={['all', 'library']} /></>, action: e => { e.preventDefault(); this._insertText('in:'); } }
+    { label: <><mark>in:</mark> <FormattedList type='disjunction' value={['all', 'library', 'public']} /></>, action: e => { e.preventDefault(); this._insertText('in:'); } }
   ];
 
   setRef = c => {

app/lib/search_query_transformer.rb

@@ -58,6 +58,8 @@ class SearchQueryTransformer < Parslet::Transform
       case @flags['in']
       when 'library'
         [StatusesIndex]
+      when 'public'
+        [PublicStatusesIndex]
       else
         [PublicStatusesIndex, StatusesIndex]
       end