don't show help page when --exec-path or --html-path are requested

hub would erroneously display the help page instead of forwarding the
arguments to git.

Bonus: make test/fakebin/git POSIX shell compatible; was using bashisms.

lib/hub/runner.rb

@@ -11,7 +11,7 @@ module Hub
       @args = Args.new(args)
 
       # Hack to emulate git-style
-      @args.unshift 'help' if @args.grep(/^[^-]|version/).empty?
+      @args.unshift 'help' if @args.grep(/^[^-]|version|exec-path$|html-path/).empty?
 
       # git commands can have dashes
       cmd = @args[0].sub(/(\w)-/, '\1_')

test/fakebin/git

 #!/bin/sh
-if [[ $1 == "--version" ]]; then
+if [ "$1" = "--version" ]; then
   echo "git version 1.7.0.4"
+elif [ "$1" = "--exec-path" ]; then
+  echo "/usr/lib/git-core"
+elif [ "$1" = "--html-path" ]; then
+  echo "/usr/share/doc/git-doc"
 else
   echo "ERROR: git was called, but wasn't supposed to:" git $*
   exit 1

test/hub_test.rb

@@ -491,6 +491,21 @@ class HubTest < Test::Unit::TestCase
     assert_includes "hub version #{Hub::Version}", out
   end
 
+  def test_exec_path
+    out = hub('--exec-path')
+    assert_equal "/usr/lib/git-core\n", out
+  end
+
+  def test_exec_path_arg
+    out = hub('--exec-path=/home/wombat/share/my-l33t-git-core')
+    assert_equal Hub::Commands.improved_help_text, hub("")
+  end
+
+  def test_html_path
+    out = hub('--html-path')
+    assert_equal "/usr/share/doc/git-doc\n", out
+  end
+
   def test_help
     assert_equal Hub::Commands.improved_help_text, hub("help")
   end