This is a fork of the GNU_Terry_Pratchett extension, fixed to support http-equiv meta tag detection (as long as only one X-Clacks-Overhead meta tag is used). Thanks to IgnoredAmbience's review of the original extension for the required fix of changing "Document" to "document" in gnu.js.

Original description
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In tribute to the late Sir Terry Pratchett many websites are adding the message "GNU Terry Pratchett" into the html header "X-Clacks-Overhead". This plugin allows you to see when a website is using the header and read the message included. The message is also displayed visually in the semaphore style from the upcoming board game "Clacks" by Backspindle Games.

Concept: Richard Atha-Nicholls
Art: Amy Atha-Nicholls
Coding: Rob Grundy

Install

• License: GNU General Public License v2.0 or later
• Weekly downloads: 4
• Average daily users: 221
• Rating: 5/5 of 4 ratings
• Created: 2019-01-05 03:38:24
• Last updated: 2019-01-05 04:05:07
• Homepage: https://github.com/Sixthhokage1/x-clacks-overhead
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/x-clacks-overhead/
• API: {fa3caadf-e614-4f06-8375-f80c011714a4}