Document undocumented completion commands

* src/minibuf.c (Fread_from_minibuffer):
* lisp/minibuffer.el (minibuffer-complete-history)
(minibuffer-complete-defaults): Doc fixes.

* doc/emacs/mini.texi (Completion Commands): Fix markup, style of
describing commands, and indexing.  Document 'C-x UP' and 'C-x
DOWN'.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/minibuf.c b/src/minibuf.c
index f16880011f7..83b1fa024f8 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -1293,6 +1293,11 @@ barf_if_interaction_inhibited (void)
 DEFUN ("read-from-minibuffer", Fread_from_minibuffer,
        Sread_from_minibuffer, 1, 7, 0,
        doc: /* Read a string from the minibuffer, prompting with string PROMPT.
+While in the minibuffer, you can use \\<minibuffer-local-completion-map>\\[minibuffer-complete] and \\[minibuffer-complete-word] to complete your input.
+You can also use \\<minibuffer-local-map>\\[minibuffer-complete-history] to complete using history items in the
+input history HIST, and you can use \\[minibuffer-complete-defaults] to complete using
+the default items in DEFAULT-VALUE.
+
 The optional second arg INITIAL-CONTENTS is an obsolete alternative to
   DEFAULT-VALUE.  It normally should be nil in new code, except when
   HIST is a cons.  It is discussed in more detail below.