Progress

app/javascript/gabsocial/features/ui/util/counter.js

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+import { urlRegex } from './url_regex'
+
+const urlPlaceholder = 'xxxxxxxxxxxxxxxxxxxxxxx'
+
+export function countableText(inputText) {
+  return inputText
+    .replace(urlRegex, urlPlaceholder)
+    .replace(/(^|[^\/\w])@(([a-z0-9_]+)@[a-z0-9\.\-]+[a-z0-9]+)/ig, '$1@$3');
+}