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The command loop keeps a history of the complex commands that have
been executed, to make it convenient to repeat these commands. A
"complex command" is one for which the interactive argument reading
uses the minibuffer. This includes any `M-x' command, any `M-ESC'
command, and any command whose `interactive' specification reads an
argument from the minibuffer. Explicit use of the minibuffer during
the execution of the command itself does not cause the command to be
- Variable: command-history
This variable's value is a list of recent complex commands, each
represented as a form to evaluate. It continues to accumulate all
complex commands for the duration of the editing session, but all
but the first (most recent) thirty elements are deleted when a
garbage collection takes place (Note: Garbage Collection.).
=> ((switch-to-buffer "chistory.texi")
This history list is actually a special case of minibuffer history
(Note: Minibuffer History.), with one special twist: the elements are
expressions rather than strings.
There are a number of commands devoted to the editing and recall of
previous commands. The commands `repeat-complex-command', and
`list-command-history' are described in the user manual (*note
Repetition: (emacs)Repetition.). Within the minibuffer, the history
commands used are the same ones available in any minibuffer.
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