From 1e70070d3d64638f8d66a161b096f92d48db7fa2 Mon Sep 17 00:00:00 2001
From: Richard Feldman <richard.t.feldman@gmail.com>
Date: Wed, 12 Jun 2019 23:18:40 -0400
Subject: [PATCH] Attempt the '-' on numbers

---
 src/parse.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/parse.rs b/src/parse.rs
index 2291abdca1..8072c110b1 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -678,7 +678,7 @@ where I: Stream<Item = char, Position = IndentablePosition>,
         ))
     );
 
-    optional(char('-'))
+    optional(attempt(char('-')))
         // Do this lookahead to decide if we should parse this as a number.
         // This matters because once we commit to parsing it as a number,
         // we may discover non-digit chars, indicating this is actually an
@@ -755,7 +755,7 @@ where I: Stream<Item = char, Position = IndentablePosition>,
         ))
     );
 
-    optional(char('-'))
+    optional(attempt(char('-')))
         // Do this lookahead to decide if we should parse this as a number.
         // This matters because once we commit to parsing it as a number,
         // we may discover non-digit chars, indicating this is actually an