Formula: add any_version_installed? method

2015-07-30 16:01:36 +08:00 · 2015-07-30 16:01:36 +08:00 · 03facd8554
commit 03facd8554
parent 8f5f27358a
1 changed files with 6 additions and 0 deletions
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@ -274,6 +274,12 @@ class Formula
    (dir = installed_prefix).directory? && dir.children.length > 0
  end

+  # If at least one version of {Formula} is installed.
+  def any_version_installed?
+    require "tab"
+    rack.directory? && rack.subdirs.any? { |keg| (keg/Tab::FILENAME).file? }
+  end
+
  # @private
  # The `LinkedKegs` directory for this {Formula}.
  # You probably want {#opt_prefix} instead.