Added prompt replacement

src/parser/find_subs.rs

@@ -0,0 +1,66 @@
+use std::collections::VecDeque;
+
+use crate::parser::Operator;
+use crate::parser::Token;
+use crate::parser::LineLocation;
+
+
+pub fn p_find_subs(
+	mut g: VecDeque<Token>,
+) -> Vec<(LineLocation, String)> {
+
+	let mut r: Vec<(LineLocation, String)> = Vec::with_capacity(8);
+
+	while g.len() > 0 {
+		// Read in reverse. Very important!
+		let t = g.pop_back().unwrap();
+
+		match &t {
+
+			Token::PreOperator(l, o) => {
+				match o {
+					Operator::Multiply => { r.push((l.clone(), String::from("×"))); },
+					Operator::Divide => { r.push((l.clone(), String::from("÷"))); },
+					_ => {}
+				}
+			},
+
+			Token::PreWord(l, s) => {
+				match &s[..] {
+
+					// Greek letters
+					"alpha"   => { r.push((l.clone(), String::from("α"))); },
+					"beta"    => { r.push((l.clone(), String::from("β"))); },
+					"gamma"   => { r.push((l.clone(), String::from("γ"))); },
+					"delta"   => { r.push((l.clone(), String::from("δ"))); },
+					"epsilon" => { r.push((l.clone(), String::from("ε"))); },
+					"zeta"    => { r.push((l.clone(), String::from("ζ"))); },
+					"eta"     => { r.push((l.clone(), String::from("η"))); },
+					"theta"   => { r.push((l.clone(), String::from("θ"))); },
+					"iota"    => { r.push((l.clone(), String::from("ι"))); },
+					//"kappa"   => { r.push((l.clone(), String::from("κ"))); },
+					"lambda"  => { r.push((l.clone(), String::from("λ"))); },
+					"mu"      => { r.push((l.clone(), String::from("μ"))); },
+					"nu"      => { r.push((l.clone(), String::from("ν"))); },
+					"xi"      => { r.push((l.clone(), String::from("ξ"))); },
+					//"omicron" => { r.push((l.clone(), String::from("ο"))); },
+					"pi"      => { r.push((l.clone(), String::from("π"))); },
+					"rho"     => { r.push((l.clone(), String::from("ρ"))); },
+					"sigma"   => { r.push((l.clone(), String::from("σ"))); },
+					"tau"     => { r.push((l.clone(), String::from("τ"))); },
+					//"upsilon" => { r.push((l.clone(), String::from("υ"))); },
+					"phi"     => { r.push((l.clone(), String::from("φ"))); },
+					"chi"     => { r.push((l.clone(), String::from("χ"))); },
+					"psi"     => { r.push((l.clone(), String::from("ψ"))); },
+					"omega"   => { r.push((l.clone(), String::from("ω"))); }
+
+					_ => {}
+				}
+
+			}
+			_ => {}
+		}
+	}
+
+	return r;
+}

src/parser/tokenize.rs

@@ -82,10 +82,9 @@ pub fn p_tokenize(input: &String) -> VecDeque<Token> {
 
 			// Operator
 			// Always one character
-			'*'|'×'|
-			'/'|'÷'|
-			'+'|'%'|
-			'^'|'!' => {
+			'*'|'/'|'+'|
+			'^'|'!'|'%'
+			=> {
 				if t.is_some() { g.push_back(update_line_location(t.unwrap(), i)); }
 				t = Some(Token::PreOperator(
 					LineLocation{pos: i, len: 0},