Merge pull request #2871 from rolandwalker/prepros_executable

restore executable bits in Prepos install

Casks/prepros.rb

@@ -4,4 +4,17 @@ class Prepros < Cask
   version '4.0.1'
   sha1 '5263a600ead4711acdacb05b0da952d36197d8a2'
   link 'Prepros.app'
+  after_install do
+    # re: https://github.com/phinze/homebrew-cask/issues/2859,
+    # /usr/bin/unzip loses executable bits in this archive for
+    # unknown reasons
+    system <<-EOBASH
+       /usr/bin/find '#{destination_path}' -type f -print0 |  \
+       /usr/bin/xargs -0 /usr/bin/file |                      \
+       /usr/bin/egrep ' Mach-O (executable|dynamically)' |    \
+       /usr/bin/cut -f1 -d: |                                 \
+       /usr/bin/perl -pe 's{\\n}{\\000}' |                    \
+       /usr/bin/xargs -0 /bin/chmod a+x
+    EOBASH
+  end
 end