Try using backslash to escape newlines in SIL strings

thanks https://stackoverflow.com/a/54336425

rattail/sil/writer.py

@@ -110,6 +110,10 @@ class Writer(Object):
         # file.  so must cleanup anything that would complicate that
         value = value.replace('\r\n', '\n')
 
+        # nb. also, if a string value does contain newlines, we must
+        # embed backslash to properly escape them
+        value = value.replace('\n', '\\\n')
+
         value = value.replace("'", "''")
         return f"'{value}'"