From f6257c21839e93bf7fee9ff06196fabe71980010 Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <james@purplerock.ca>
Date: Wed, 10 Jun 2020 00:32:06 -0700
Subject: [PATCH] subprocess: lru_cache version checks

---
 src/ocrmypdf/subprocess.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ocrmypdf/subprocess.py b/src/ocrmypdf/subprocess.py
index 96a0afb6..5cc540fa 100644
--- a/src/ocrmypdf/subprocess.py
+++ b/src/ocrmypdf/subprocess.py
@@ -105,6 +105,7 @@ def _fix_windows_args(program, args, env):
     return args
 
 
+@lru_cache(maxsize=None)
 def get_version(program, *, version_arg='--version', regex=r'(\d+(\.\d+)*)', env=None):
     """Get the version of the specified program"""
     args_prog = [program, version_arg]