require "hemingway/symbol/symbol_nodes" module Hemingway grammar Symbol rule math_symbol ( "\\Gamma" / "\\Delta" / "\\Theta" / "\\Lambda" / "\\Xi" / "\\Pi" / "\\Sigma" / "\\Upsilon" / "\\Phi" / "\\Psi" / "\\Omega" / "\\alpha" / "\\beta" / "\\gamma" / "\\delta" / "\\epsilon" / "\\zeta" / "\\eta" / "\\theta" / "\\iota" / "\\kappa" / "\\lambda" / "\\mu" / "\\nu" / "\\xi" / "\\pi" / "\\rho" / "\\varsigma" / "\\sigma" / "\\tau" / "\\upsilon" / "\\phi" / "\\chi" / "\\psi" / "\\omega" / "\\rightarrow" ) end end end