"Jonah Hex, City Rat: The Precedent" from Hex #11 (DC, 1986) by Michael Fleisher, Mark Texeira, Carlos Garzon and Pablo Marcos
Not so much an attempt to make Jonah Hex relevant to the kids of the mid-80s, sending Hex to a post-apocalyptic future was Fleisher telling a story he'd always wanted to tell using an established character whose book's sales were starting to flag. I've got Hex on my list of books I want to finish collecting and read, but the issues I have don't exactly turn my crank, not even the strange ones drawn by Keith Giffen at the end of the short run. I'd always thought Jonah Hex was such a strong character, he was essentially bad-story-proof. Does Hex test that theory, Jonah fans?