Bad indentation does not cause an error

[maxteufel]

The following example

ex is
  iaws (val u8) =>
    val = (u8 9)   ||
     val = (u8 10)

  say (iaws (u8 1))
  say (iaws (u8 9))

has bad indentation in the iaws feature but this does not cause an error. See also https://github.com/tokiwa-software/fuzion/pull/1494#discussion_r1203455980.

[michaellilltokiwa]

@fridis What is the logic needed to detect this bad indentation? Should we enforce indentation to be at least two spaces?