Update app.py

app.py

@@ -43,9 +43,15 @@ def clean_outer(word: str) -> str:
     return word.strip(OUTER_PUNCT)
 
 
+def _is_plain_ascii_alpha(c: str) -> bool:
+    """True only for plain a-z/A-Z letters (excludes accented letters
+    like é, ú, ñ, ü -- those are treated as 'suspicious' below)."""
+    return c.isalpha() and c.isascii()
+
+
 def _segment_is_clean(segment: str) -> bool:
-    """A hyphen-joined chunk is 'clean' if it's pure letters(+apostrophe)
-    or pure digits or empty (e.g. '36', 'year', 'old' in 36-year-old)."""
+    """A hyphen-joined chunk is 'clean' if it's pure plain letters
+    (+apostrophe) or pure digits or empty (e.g. '36', 'year', 'old')."""
     if segment == "":
         return True
     if segment.isdigit():
@@ -90,8 +96,9 @@ def is_mixup_word(word: str):
             return False, cleaned                 # legit hyphenated word -> skip
         return True, cleaned                       # a chunk is disguised -> flag
 
-    # No hyphen: flag if letters are mixed with digits/specials anywhere
-    has_other = any((not c.isalpha()) for c in cleaned)
+    # No hyphen: flag if plain letters are mixed with digits/symbols/
+    # accented look-alike letters (é, ú, ñ, ü...) anywhere in the word
+    has_other = any(not _is_plain_ascii_alpha(c) for c in cleaned)
     if has_other:
         return True, cleaned