From b58bbe3949d30586513c4e6b3efbf3d3fd2fc694 Mon Sep 17 00:00:00 2001
From: Mike Gerwitz <mtg@gnu.org>
Date: Thu, 31 Aug 2017 12:43:42 -0400
Subject: [PATCH] prebirth: Add `-' to libprebirth

* build-aux/bootstrap/libprebirth.js ($$$_$): Add function.
---
 build-aux/bootstrap/libprebirth.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build-aux/bootstrap/libprebirth.js b/build-aux/bootstrap/libprebirth.js
index c4556f9..5f32ce3 100644
--- a/build-aux/bootstrap/libprebirth.js
+++ b/build-aux/bootstrap/libprebirth.js
@@ -99,6 +99,10 @@ function $$$p$()
 {
     return argToArr( arguments ).reduce( ( ( x, y ) => x + y ), 0 );
 }
+function $$$_$()
+{
+    return argToArr( arguments ).reduce( ( ( x, y ) => x - y ), 0 );
+}
 
 
 // Node.js stuff