Commit 6ecb21f1 authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

Clarify how completing-read returns an empty string.

parent fab95625
......@@ -601,10 +601,11 @@ commands won't exit unless the input typed is itself an element of
commands work regardless of the input in the minibuffer.
The user can exit with null input by typing @key{RET} with an empty
minibuffer. Then @code{completing-read} returns @code{nil}. This is
how the user requests whatever default the command uses for the value
being read. The user can return using @key{RET} in this way regardless
of the value of @var{require-match}.
minibuffer. Then @code{completing-read} returns @code{""}. This is how
the user requests whatever default the command uses for the value being
read. The user can return using @key{RET} in this way regardless of the
value of @var{require-match}, and regardless of whether the empty string
is included in @var{collection}.
The function @code{completing-read} works by calling
@code{read-minibuffer}. It uses @code{minibuffer-local-completion-map}
......
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