Support for column names with special characters (å, ä, ö)

[alu-]

While testing a legacy system I had problems inserting data into a column named "Behörighet", among others. With that example the column name in the query becomes "Beh%C3%B6righet", which gives an error with --debug DEBU[2021-05-11T10:40:49+02:00] Cannot run insert: Error 1054: Unknown column 'Beh%C3%B6righet' in 'field list'

[percona-csalguero]

Thanks for this report. Interesting case.