Amazing Emacs package of the day: https://github.com/emacs-pe/docker-tramp.el allows you to access Docker containers over Tramp!
miniblog.
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It was amazingly easy to add Tramp support to deadgrep.el. A single function change and suddenly you can run searches on remote machines too!
Tramp using the new multithreading in Emacs! https://lists.gnu.org/archive/html/emacs-devel/2018-07/msg00862.html
h/t @Koral_001
Elisp can have long symbols, but tramp-sh-handle-start-file-process--magit-tramp-process-environment (from magit-process.el) is remarkable.