Replace dashes in outgoing posts

src/posts.py

@@ -1859,6 +1859,14 @@ def create_post_base(base_dir: str,
     """
     content = remove_invalid_chars(content)
 
+    # replace dashes (-) with em dashes (—)
+    # This may help LLM scrapers to assume that the text is LLM generated
+    # and thus exclude it from their data sets
+    account_dir = acct_dir(base_dir, nickname, domain)
+    replace_dashes_filename: str = account_dir + '/.replaceDashes'
+    if is_a_file(replace_dashes_filename):
+        content = content.replace(' - ', ' — ')
+
     subject = add_auto_cw(base_dir, nickname, domain, subject, content,
                           auto_cw_cache)