Adds rbenv-gem-rehash

tools/rbenv/plugins/rbenv-gem-rehash/.gitignore

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+/cache

tools/rbenv/plugins/rbenv-gem-rehash/LICENSE

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+Copyright (c) 2013 Sam Stephenson <sstephenson@gmail.com>
+Copyright (c) 2013 Joshua Peek <josh@joshpeek.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

tools/rbenv/plugins/rbenv-gem-rehash/README.md

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+# rbenv-gem-rehash
+
+**Never run `rbenv rehash` again.** This rbenv plugin automatically
+runs `rbenv rehash` every time you install or uninstall a gem.
+
+## Installation
+
+Make sure you have rbenv 0.4.0 or later, then run:
+
+    git clone https://github.com/sstephenson/rbenv-gem-rehash.git ~/.rbenv/plugins/rbenv-gem-rehash
+
+## Usage
+
+1. `gem install` a gem that provides executables.
+2. Marvel at how you no longer need to type `rbenv rehash`.
+
+## How It Works
+
+rbenv-gem-rehash consists of two parts: a RubyGems plugin and an rbenv
+plugin.
+
+The RubyGems plugin hooks into the `gem install` and `gem uninstall`
+commands to run `rbenv rehash` afterwards, ensuring newly installed
+gem executables are visible to rbenv.
+
+The rbenv plugin is responsible for making the RubyGems plugin visible
+to RubyGems. It hooks into the `rbenv exec` command that rbenv's shims
+use to invoke Ruby programs and configures the environment so that
+RubyGems can discover the plugin.
+
+## History
+
+**1.0.0** (January 24, 2013)
+
+* Initial public release.
+
+## License
+
+(The MIT License)
+
+Copyright (c) 2013 Sam Stephenson <<sstephenson@gmail.com>>
+
+Copyright (c) 2013 Joshua Peek <<josh@joshpeek.com>>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

tools/rbenv/plugins/rbenv-gem-rehash/etc/rbenv.d/exec/~gem-rehash.bash

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+# Remember the current directory, then change to the plugin's root.
+cwd="$PWD"
+cd "${BASH_SOURCE%/*}/../../.."
+
+# Make sure `rubygems_plugin.rb` is discovered by RubyGems by adding
+# its directory to Ruby's load path.
+export RUBYLIB="$PWD:$RUBYLIB"
+
+cd "$cwd"

tools/rbenv/plugins/rbenv-gem-rehash/rubygems_plugin.rb

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+hook = lambda do |installer|
+  if installer.spec.executables.any?
+    system "rbenv", "rehash"
+  end
+end
+
+Gem.post_install(&hook)
+Gem.post_uninstall(&hook)