\endcsname

yex.keyword.Endcsname()

Ends a \csname sequence.

This is special-cased by \csname, and in any other context it raises an exception.

Source code in yex/keyword/other.py

@yex.decorator.control()
def Endcsname():
    r"""
    Ends a \csname sequence.

    This is special-cased by \csname, and in any other context it
    raises an exception.
    """
    raise yex.exception.EndcsnameError()