Substitute cleanup

src/command/mod.rs

@@ -257,7 +257,7 @@ pub fn do_command(
 			}
 
 			let v = args[1].to_string();
-			let (_, v) = substitute(&v, v.len());
+			let v = substitute(&v);
 			let r = context.delete_variable(&v);
 
 			match r {

src/entry/unix/promptbuffer.rs

@@ -3,8 +3,7 @@ use std::io::Write;
 use termion::raw::RawTerminal;
 use termion::color;
 use termion::style;
-
+use crate::parser::substitute_cursor;
-use crate::parser::substitute;
 
 
 #[derive(Debug)]
@@ -43,7 +42,7 @@ impl PromptBuffer {
 		let i = if l == 0 {0} else {l - self.cursor};
 
 		// Draw prettyprinted expression
-		let (display_cursor, s) = substitute(&self.get_contents(), i);
+		let (display_cursor, s) = substitute_cursor(&self.get_contents(), i);
 
 		write!(
 			stdout, "\r{}{}==>{}{} {}",

src/entry/unix/unix.rs

@@ -91,7 +91,7 @@ fn do_expression(
 
 			Err((l, e)) => {
 				// Display user input
-				let (_, s) = substitute(&s, s.len());
+				let s = substitute(&s);
 				write!(
 					stdout, "\n{}{}==>{}{} {}\r\n",
 					style::Bold, color::Fg(color::Red),

src/parser/mod.rs

@@ -37,8 +37,12 @@ pub fn parse_no_context(s: &String) -> Result<Expression, (LineLocation, ParserE
 	parse(s, &Context::new())
 }
 
+pub fn substitute(s: &String) -> String {
+	let (_, s) = substitute_cursor(s, s.chars().count());
+	return s;
+}
 
-pub fn substitute(
+pub fn substitute_cursor(
 	s: &String, // The string to substitute
 	c: usize    // Location of the cursor right now
 ) -> (