@table @code
@item basic
+@cindex @code{basic}, completion style
A matching completion alternative must have the same beginning as the
text in the minibuffer before point. Furthermore, if there is any
text in the minibuffer after point, the rest of the completion
alternative must contain that text as a substring.
-@findex partial-completion
+@cindex partial completion
+@cindex @code{partial-completion}, completion style
@item partial-completion
This aggressive completion style divides the minibuffer text into
words separated by hyphens or spaces, and completes each word
corresponding position in the completion alternative.
@item emacs22
+@cindex @code{emacs22}, completion style
This completion style is similar to @code{basic}, except that it
ignores the text in the minibuffer after point. It is so-named
because it corresponds to the completion behavior in Emacs 22.
@table @code
@item substring
+@cindex @code{substring}, completion style
A matching completion alternative must contain the text in the
minibuffer before point, and the text in the minibuffer after point,
as substrings (in that same order).
@var{c} can be any string including the empty string.
@item initials
+@cindex @code{initials}, completion style
This very aggressive completion style attempts to complete acronyms
and initialisms. For example, when completing command names, it
matches @samp{lch} to @samp{list-command-history}.