Emacs frontend for Igor Chubin's wttr.in weather service https://git.cjennings.net/emacs-wttrin/atom?h=main 2026-06-24T04:10:51+00:00 2026-06-24T04:10:51+00:00 Craig Jennings c@cjennings.net 2026-06-24T04:10:51+00:00 urn:sha1:efd3cdce5b3aebfdb3e02460d1ec0434cef85949 I bound d in the weather buffer to wttrin-make-default, which sets wttrin-favorite-location to the location on screen so it drives the mode-line and future sessions. The footer advertises "[d] to make default". Persistence rides savehist, not the Emacs custom-variable mechanism: wttrin--savehist-register registers wttrin-favorite-location alongside the search history, at load and on savehist-save-hook. Enable savehist-mode and the favorite survives restarts. Promoting a location drops it from the search history, the way wttrin-default-locations entries are kept out of history. The favorite shows in the picker instead: wttrin--completion-candidates prepends it when it's a string and not already a default, so it appears exactly once. The setter only assigns the variable and trims history. It doesn't register with savehist itself, because savehist-additional-variables is unbound until savehist loads, so a direct add-to-list would error for users without savehist. Registration stays on the load and save-hook path.