From 45c19e44f07dd33ccc246ea331f229a4d460f720 Mon Sep 17 00:00:00 2001
From: Michael Brown <supermathie@gmail.com>
Date: Fri, 24 Nov 2017 11:53:49 -0500
Subject: [PATCH] assets rake task: only try and detect brotli if
 COMPRESS_BROTLI is set

---
 lib/tasks/assets.rake | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/lib/tasks/assets.rake b/lib/tasks/assets.rake
index 4116cd12bbe..75f7db109b1 100644
--- a/lib/tasks/assets.rake
+++ b/lib/tasks/assets.rake
@@ -115,20 +115,22 @@ def gzip(path)
   raise "gzip compression failed: exit code #{$?.exitstatus}" if $?.exitstatus != 0
 end
 
-# different brotli versions use different parameters
-ver_out, ver_err, ver_status = Open3.capture3('brotli --version')
-if !ver_status.success?
-  # old versions of brotli don't respond to --version
-  def brotli_command(path)
-    "brotli --quality 11 --input #{path} --output #{path}.br"
+if ENV['COMPRESS_BROTLI']&.to_i == 1
+  # different brotli versions use different parameters
+  ver_out, ver_err, ver_status = Open3.capture3('brotli --version')
+  if !ver_status.success?
+    # old versions of brotli don't respond to --version
+    def brotli_command(path)
+      "brotli --quality 11 --input #{path} --output #{path}.br"
+    end
+  elsif ver_out >= "brotli 1.0.0"
+    def brotli_command(path)
+      "brotli --quality=11 #{path} --output=#{path}.br"
+    end
+  else
+    # not sure what to do here, not expecting this
+    raise "cannot determine brotli version"
   end
-elsif ver_out >= "brotli 1.0.0"
-  def brotli_command(path)
-    "brotli --quality=11 #{path} --output=#{path}.br"
-  end
-else
-  # not sure what to do here, not expecting this
-  raise "cannot determine brotli version"
 end
 
 def brotli(path)