From d8e1822c7002c1536822c975d97fd125d39fc9c5 Mon Sep 17 00:00:00 2001
From: /dev/urandom <iw4x-dev-urandom@protonmail.com>
Date: Sun, 3 Jan 2016 14:54:35 +0100
Subject: [PATCH] premake: fix oldRevNumber if a version.hpp in an old format
 exists.

---
 premake5.lua | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/premake5.lua b/premake5.lua
index ecb9eb8b..9c6d8e2f 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -25,6 +25,10 @@ newaction {
 		if oldVersionHeader ~=nil then
 			local oldVersionHeaderContent = assert(oldVersionHeader:read('*a'))
 			oldRevNumber = string.match(oldVersionHeaderContent, "#define REVISION (%d+)")
+			if oldRevNumber = nil then
+				-- old version.hpp format?
+				oldRevNumber = "(none)"
+			end
 		end
 
 		-- generate version.hpp with a revision number if not equal