From a59672abc9002e302af1ab64285d276534c2e908 Mon Sep 17 00:00:00 2001
From: Loic Nageleisen <loic.nageleisen@gmail.com>
Date: Fri, 27 Jul 2018 11:24:01 +0200
Subject: [PATCH] Handle non-git patches

Detecting $striplevel relies on a git-specific line, so it is now made
to not depend on a git-specific match that is reliably present in all
patch formats.

Fixes #1159
---
 bin/ruby-build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/ruby-build b/bin/ruby-build
index 0a3272ddb9..5a348052bc 100755
--- a/bin/ruby-build
+++ b/bin/ruby-build
@@ -1151,7 +1151,7 @@ apply_ruby_patch() {
     cat "${2:--}" >"$patchfile"
 
     local striplevel=0
-    grep -q '^diff --git a/' "$patchfile" && striplevel=1
+    grep -q '^--- a/' "$patchfile" && striplevel=1
     patch -p$striplevel --force -i "$patchfile"
     ;;
   esac