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(emacs)Completion Commands

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Completion Commands
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   Here is a list of the completion commands defined in the minibuffer
when completion is available.

`<TAB>'
     Complete the text in the minibuffer as much as possible
     (`minibuffer-complete').

`<SPC>'
     Complete the minibuffer text, but don't go beyond one word
     (`minibuffer-complete-word').

`<RET>'
     Submit the text in the minibuffer as the argument, possibly
     completing first as described below
     (`minibuffer-complete-and-exit').

`?'
     Display a list of all possible completions of the text in the
     minibuffer (`minibuffer-list-completions').

   <SPC> completes much like <TAB>, but never goes beyond the next
hyphen or space.  If you have `auto-f' in the minibuffer and type
<SPC>, it finds that the completion is `auto-fill-mode', but it stops
completing after `fill-'.  This gives `auto-fill-'.  Another <SPC> at
this point completes all the way to `auto-fill-mode'.  The command that
implements this behavior is called `minibuffer-complete-word'.

   Here are some commands you can use to choose a completion from a
window that displays a list of completions:

`Mouse-2'
     Clicking mouse button 2 on a completion in the list of possible
     completions chooses that completion (`mouse-choose-completion').
     You normally use this command while point is in the minibuffer,
     but you must click in the list of completions, not in the
     minibuffer itself.

`<PRIOR>'
`M-v'
     Typing <PRIOR> or <PAGE-UP>, or `M-v', while in the minibuffer,
     selects the window showing the completion list buffer
     (`switch-to-completions').  This paves the way for using the
     commands below.  (Selecting that window in the usual ways has the
     same effect, but this way is more convenient.)

`<RET>'
     Typing <RET> _in the completion list buffer_ chooses the
     completion that point is in or next to (`choose-completion').  To
     use this command, you must first switch windows to the window that
     shows the list of completions.

`<RIGHT>'
     Typing the right-arrow key <RIGHT> _in the completion list buffer_
     moves point to the following completion (`next-completion').

`<LEFT>'
     Typing the left-arrow key <LEFT> _in the completion list buffer_
     moves point toward the beginning of the buffer, to the previous
     completion (`previous-completion').