macros_escaped_braces.test

<<< tex
\newcommand{\set}[1]{\{#1\}}
\newcommand{\lbr}{\{}
\newcommand{\abc}{5}

\set{a} + \lbr \abc
>>> native
[ EGrouped
    [ ESymbol Open "{" , EIdentifier "a" , ESymbol Close "}" ]
, ESymbol Bin "+"
, ESymbol Open "{"
, ENumber "5"
]