From 42787ec700b22f43c784e846a13db96ae9c7109b Mon Sep 17 00:00:00 2001
From: ConnorSkees <39542938+ConnorSkees@users.noreply.github.com>
Date: Tue, 17 Mar 2020 10:10:42 -0400
Subject: [PATCH] proper error message in `unit()` when not given number

---
 src/builtin/meta.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/builtin/meta.rs b/src/builtin/meta.rs
index 66abf13..9145b41 100644
--- a/src/builtin/meta.rs
+++ b/src/builtin/meta.rs
@@ -47,7 +47,7 @@ pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
             max_args!(args, 1);
             let unit = match arg!(args, 0, "number") {
                 Value::Dimension(_, u) => u.to_string(),
-                _ => String::new(),
+                v => return Err(format!("$number: {} is not a number.", v).into()),
             };
             Ok(Value::Ident(unit, QuoteKind::Double))
         }),