[Lazarus] SynEdit: AutoIndent with Tabs instead of spaces, is this possible?

[Bernd]

I cannot find any way to convince SynEdit to indent the next line with
a tab when I press enter on an indented line, it will always use
spaces, even if eoTabsToSpaces is false and eoTabIndent is true and
the previous line is intended with a Tab. Pressing Tab to indent works
as expected but not the AutoIndent. I need to edit Makefile templates,
they may not be indented with spaces or it will be a syntax error. The
only way I have found is to disable AutoIndent completely or do a
string replace after editing.