reduce regex calls in name highlighting

bink.py

@@ -142,18 +142,20 @@ class App():
         post_user = post["user"]
         time_seconds = post["time"] / 1_000_000_000
         stamp = datetime.datetime.fromtimestamp(time_seconds)
-        if current_user != post_user and name_re.search(body):
+        if current_user != post_user:
-            widget_body = []
+            search = name_re.finditer(body)
-            index = 0
+            if search:
-            for match in name_re.finditer(body):
+                widget_body = []
-                start, end = match.span()
+                index = 0
-                before = body[index:start]
+                for match in search:
-                highlight = body[start:end]
+                    start, end = match.span()
-                widget_body.append(before)
+                    before = body[index:start]
-                widget_body.append(("highlight", highlight))
+                    highlight = body[start:end]
-                index = end
+                    widget_body.append(before)
-            widget_body.append(body[index:])
+                    widget_body.append(("highlight", highlight))
-            body = widget_body
+                    index = end
+                widget_body.append(body[index:])
+                body = widget_body
         pile = urwid.Pile([
             urwid.Text([("bold", f"~{post_user}"), " @ ", stamp.strftime("%H:%M (%A, %B %d, %Y)")]),
             urwid.Text(body),