support 'append_delimiter' to fix #1679 #1680

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Closed

jvanasco wants to merge 5 commits into sqlalchemy:main from jvanasco:fix-pyproject

alembic/util/pyfiles.py

-Original file line number
+Diff line change
@@ Expand Up / @@ -46,6 +46,8 @@ def template_to_file( @@
             )
         else:
             with open(dest, "ab" if append else "wb") as f:
+                if append:
+                    f.write(b"\n\n")
                 f.write(output)
@@ Expand Down @@