Use list syntax for key definitions.
(winner-mode, winner-save-unconditionally) (winner-hook-installed-p): Save window configuration after every command if window-configuration-change-hook is not present. (winner-save-new-configurations, winner-insert-if-new): Compare a new window configuration with the previous configuration before saving it. (winner-insert-if-new, winner-ring) (winner-configuration, winner-set): Save buffer list together with the window configurations, so that windows that can no longer be correctly restored can instead be deleted. (winner-undo): Compare restored configuration with other configurations that have been reviewed and skip this one if it looks similar. (winner-insert-if-new, winner-save-new-configurations) (winner-save-unconditionally): Just save the final configuration if the same command (changing the window configuration) is applied several times in a row. (winner-switch): Removed the command `winner-switch' (and the variables connected to it), since because of the change above, any "switching package" may now be used without disturbing winner-mode too much. (winner-change-fun): Removed the pushnew command, so that `cl' will not have to be loaded. (winner-set-conf): Introduced "wrapper" around `set-window-configuration', so that `winner-undo' may be called from the minibuffer.
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