Fix regex in strip_trailing_url_punctuation to properly escape special characters

- Corrected the regular expression in the `strip_trailing_url_punctuation` function to properly escape the single quote (') and ensure valid syntax.
- Fixed potential issues caused by unescaped characters in the regex pattern.

rss2bsky.py

@@ -419,26 +419,26 @@ def build_post_text_variants(title_text: str, link: str, max_length: int = 300):
         full = f"{title_text}\n\n{link}"
         if len(full) <= max_length:
             add_variant(full)
-        else:
-            # Trunca el títol per fer-hi lloc al link
-            # Reserva espai per "\n\n" + link
-            reserve = len(link) + 2
-            available = max_length - reserve
-            if available > 20:
-                # FIX: Use single char '…' and strip trailing dots/spaces
-                truncated_title = title_text[:available].rstrip(" .")
-                add_variant(f"{truncated_title}\n\n{link}")
 
-    # Variant 2: només títol (truncat si cal)
+    # Variant 2: només títol complet (sense truncar)
     if title_text:
         if len(title_text) <= max_length:
             add_variant(title_text)
         else:
-            # FIX: Use single char '…' and strip trailing dots/spaces
-            truncated = title_text[:max_length - 1].rstrip(" .")
+            truncated = title_text[:max_length].rstrip(" .")
             add_variant(truncated)
 
-    # Variant 3: només link (si no hi ha títol)
+    # Variant 3: títol truncat + link (si el títol complet+link no hi cap)
+    if title_text and link:
+        full = f"{title_text}\n\n{link}"
+        if len(full) > max_length:
+            reserve = len(link) + 2
+            available = max_length - reserve
+            if available > 20:
+                truncated_title = title_text[:available].rstrip(" .")
+                add_variant(f"{truncated_title}\n\n{link}")
+
+    # Variant 4: només link (si no hi ha títol)
     if link and not title_text:
         add_variant(link)