Tests whether token is Parseable
goodToken(x, ...)logical
length-one character
ignored arguments
Other plotmath:
[.plotmath(),
[[.plotmath(),
as.expression.plotmath(),
as.png.plotmath(),
as_plotmath(),
as_plotmath.greek(),
as_plotmath.spar(),
as_plotmath.spork(),
concatenate.plotmath(),
ggplot.plotmath(),
plotmathToken()
goodToken('alpha')
goodToken('foo')
goodToken('\\$')
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