fix non-ascii hashtag regex

src/experimental/parser/user.nim

@@ -1,14 +1,14 @@
-import std/[algorithm, unicode, re, strutils, strformat, options]
+import std/[algorithm, unicode, re, strutils, strformat, options, nre]
 import jsony
 import utils, slices
 import ../types/user as userType
 from ../../types import User, Error
 
 let
-  unRegex = re"(^|[^A-z0-9-_./?])@([A-z0-9_]{1,15})"
+  unRegex = re.re"(^|[^A-z0-9-_./?])@([A-z0-9_]{1,15})"
   unReplace = "$1<a href=\"/$2\">@$2</a>"
 
-  htRegex = re"(^|[^\w-_./?])([#＃$])([\w_]+)"
+  htRegex = nre.re"(*U)(^|[^\w-_./?])([#＃$])([\w_]+)"
   htReplace = "$1<a href=\"/search?q=%23$3\">$2$3</a>"
 
 proc expandUserEntities(user: var User; raw: RawUser) =
@@ -29,7 +29,7 @@ proc expandUserEntities(user: var User; raw: RawUser) =
 
   user.bio = orig.replacedWith(replacements, 0 .. orig.len)
                  .replacef(unRegex, unReplace)
-                 .replacef(htRegex, htReplace)
+                 .replace(htRegex, htReplace)
 
 proc getBanner(user: RawUser): string =
   if user.profileBannerUrl.len > 0: