1 files changed, 15 insertions, 0 deletions
diff --git a/searx/utils.py b/searx/utils.py
index 4fcbd9e3c..c7a579451 100644
--- a/searx/utils.py
+++ b/searx/utils.py
@@ -470,6 +470,21 @@ def ecma_unescape(string: str) -> str:
     return string
 
 
+def remove_pua_from_str(string):
+    """Removes unicode's "PRIVATE USE CHARACTER"s (PUA_) from a string.
+
+    _PUA: https://en.wikipedia.org/wiki/Private_Use_Areas
+    """
+    pua_ranges = ((0xE000, 0xF8FF), (0xF0000, 0xFFFFD), (0x100000, 0x10FFFD))
+    s = []
+    for c in string:
+        i = ord(c)
+        if any(a <= i <= b for (a, b) in pua_ranges):
+            continue
+        s.append(c)
+    return "".join(s)
+
+
 def get_string_replaces_function(replaces: Dict[str, str]) -> Callable[[str], str]:
     rep = {re.escape(k): v for k, v in replaces.items()}
     pattern = re.compile("|".join(rep.keys()))