Gtcaz is enhancing the Gist support in Drnic’s GitHub TextMate Bundle, which was initially developed by mattmatt. This feature uses gist.rb and provides built-in authentication, allowing users to create Gists linked to their GitHub accounts, provided they have configured their global Git settings correctly. The Gist support can automatically detect and set the language of the Gist based on the current TextMate settings. Installation involves cloning the GitHub repository into the appropriate TextMate Bundles directory and reloading the bundles via an AppleScript command. Chris Wanstrath, also known as @defunkt, provided an update to credit mattmatt for the original Gist support development.