Hi,

Why does TEncoding.ANSI.IsSingleByte return False (and so does TEncoding.GetEncoding(1252).IsSingleByte and for codepage 437 and 850)?

According to http://docwiki.embarcadero.com/Libraries/Rio/en/System.SysUtils.TEncoding.IsSingleByte :
"TEncoding.IsSingleByte specifies whether the current encoding is of single-byte format."

It references https://docs.microsoft.com/en-us/dotnet/api/system.text.encoding.issinglebyte This states that for codepage 1252 this should be True On my Windows machine TEncoding.ANSI.CodePage = 1252.

PM Bart wrote

Why does TEncoding.ANSI.IsSingleByte return False (and so does TEncoding.GetEncoding(1252).IsSingleByte and for codepage 437 and 850)?

It's not Delphi compatible (tested on Dutch Delphi Forum with Delphi XE3. Filed a bugreport: https://bugs.freepascal.org/view.php?id=36504