1 files changed, 6 insertions, 3 deletions

diff --git a/src/main.rs b/src/main.rs
index bc22ce2..75c33bb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -22,7 +22,7 @@ use crate::parse::*;
 use crate::readline::*;
 
 // extern crates
-use clap::{App, Arg};
+use clap::{App, AppSettings, Arg};
 use directories::{ProjectDirs, UserDirs};
 use lazy_static::lazy_static;
 use rustyline::error::ReadlineError;
@@ -150,6 +150,7 @@ fn parse_arguments() -> Configuration {
         .version(env!("CARGO_PKG_VERSION"))
         .author(env!("CARGO_PKG_AUTHORS"))
         .about(env!("CARGO_PKG_DESCRIPTION"))
+        .global_setting(AppSettings::ColoredHelp)
         .arg(
             Arg::with_name("fix")
                 .short("f")
@@ -192,8 +193,10 @@ fn parse_arguments() -> Configuration {
 }
 
 pub fn eval_math_expression(input: &str, prev_ans: Option<f64>) -> Result<f64, CalcError> {
-    let input = input.trim();
-    let input = input.replace(" ", "");
+    let input = input.trim().replace(" ", "");
+    if input == "help" {
+        return Err(CalcError::Help);
+    }
     if input.is_empty() {
         return Ok(0.);
     }