Nothing
# ------------------------------------------------------------------------------
# subset
foo[bar]
foo[1, 2]
foo[1, ]
foo[1,, ]
foo[1,,2]
foo[x=1,,y=3,4]
foo[]
# ------------------------------------------------------------------------------
# subset2
foo[[x]]
foo[[x, y]]
foo[[x,]]
foo[[x,,]]
foo[[x,,y]]
foo[[]]
# ------------------------------------------------------------------------------
# subset and subset2 precedence
a[[b[1]]]
a[b[[1]]]
# ------------------------------------------------------------------------------
# switch
switch(foo,
x = 1,
"y" = 2,
z = ,
3
)
# ------------------------------------------------------------------------------
# calls
f()
f(x)
f(1+1)
f(1 ~ 1)
f(x, )
f(x,,y)
f(x, y)
f(x, y = 2)
f(x = 1 + 1)
f(x, y =)
f(f2(x, y))
f(,)
f(x,)
f(,y)
f(x=,)
f("x"=,)
f(... = ,)
f(,y=)
# ------------------------------------------------------------------------------
# braces
{}
{1}
{1; 2}
{1;
2}
{1
2
}
{
1
2
}
# https://github.com/r-lib/tree-sitter-r/issues/44
{
1
2
3
}
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