From 3e0ff6db2a22e95373e5513b9bdfbcef538a5b37 Mon Sep 17 00:00:00 2001
From: Fabian Homborg <FHomborg@gmail.com>
Date: Thu, 19 Nov 2015 12:04:21 +0100
Subject: [PATCH] math: Join lines manually

This is an issue with 15-year old versions of bc that don't support BC_LINE_LENGTH.

Closes #2548
---
 share/functions/math.fish | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/share/functions/math.fish b/share/functions/math.fish
index d80a8c7ff..c190ec631 100644
--- a/share/functions/math.fish
+++ b/share/functions/math.fish
@@ -7,9 +7,10 @@ function math --description "Perform math calculations in bc"
 				return 0
 		end
 
-		set -lx BC_LINE_LENGTH 0
-		set -l out (echo $argv | bc)
-                test -z "$out"; and return 1
+		# Stitch lines together manually
+		# we can't rely on BC_LINE_LENGTH because some systems don't have a bc version "new" enough
+		set -l out (echo $argv | bc | string replace -r '\\\\$' '' | string join '')
+		test -z "$out"; and return 1
 		echo $out
 		switch $out
 			case 0