Homebrew.git_*: check git available

1 files changed, 6 insertions, 1 deletions

diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index f1fd7409a..caf46d6fb 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -150,27 +150,32 @@ module Homebrew
   end
 
   def self.git_origin
+    return unless Utils.git_available?
     HOMEBREW_REPOSITORY.cd { `git config --get remote.origin.url 2>/dev/null`.chuzzle }
   end
 
   def self.git_head
+    return unless Utils.git_available?
     HOMEBREW_REPOSITORY.cd { `git rev-parse --verify -q HEAD 2>/dev/null`.chuzzle }
   end
 
   def self.git_short_head
+    return unless Utils.git_available?
     HOMEBREW_REPOSITORY.cd { `git rev-parse --short=4 --verify -q HEAD 2>/dev/null`.chuzzle }
   end
 
   def self.git_last_commit
+    return unless Utils.git_available?
     HOMEBREW_REPOSITORY.cd { `git show -s --format="%cr" HEAD 2>/dev/null`.chuzzle }
   end
 
   def self.git_last_commit_date
+    return unless Utils.git_available?
     HOMEBREW_REPOSITORY.cd { `git show -s --format="%cd" --date=short HEAD 2>/dev/null`.chuzzle }
   end
 
   def self.homebrew_version_string
-    if Utils.git_available? && (pretty_revision = git_short_head)
+    if pretty_revision = git_short_head
       last_commit = git_last_commit_date
       "#{HOMEBREW_VERSION} (git revision #{pretty_revision}; last commit #{last_commit})"
     else