using \pushToTag and \removeWithTag consecutively

[Gianmaria Lari]

I don't understand the behaviour of this code:

\version "2.19.81"

var = {a \tag #'here {b} a}

{\var} %Result: a b a

{\removeWithTag #'here \var}  %Result: a a

{\pushToTag #'here b! \removeWithTag #'here \var}  %Result: a a ; Expected: a b! a

The result is:

a b a - ok!

a a - ok!

a a - not ok; shouldn't be "a b! a" ??

Thank you, g.