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Transient
Jul 20, 2023
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 a popup buffer
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.
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