套件：elpa-transient（0.2.0.30.g4d44d08-2）

Emacs key and popup interface for complex keybindings

Taking inspiration from prefix keys and prefix arguments, Transient implements a similar abstraction involving a prefix command, infix arguments and suffix commands. We could call this abstraction a "transient command", but because it always involves at least two commands (a prefix and a suffix) we prefer to call it just a "transient".

When the user calls a transient prefix command, then a transient (temporary) keymap is activated, which binds the transient's infix and suffix commands, and functions that control the transient state are added to `pre-command-hook' and `post-command-hook'. The available suffix and infix commands and their state are shown in the echo area until the transient is exited by invoking a suffix command.

Calling an infix command causes its value to be changed, possibly by reading a new value in the minibuffer.

Calling a suffix command usually causes the transient to be exited but suffix commands can also be configured to not exit the transient state.

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