From: Richard M. Stallman <rms@gnu.org>
Date: Tue, 10 Sep 1996 20:02:42 +0000 (+0000)
Subject: Clarify value returned by programmed completion function.
X-Git-Tag: emacs-20.1~3787
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=d595eca0e75840538a490a58f1a3b0c0abdded7b;p=emacs.git

Clarify value returned by programmed completion function.
---

diff --git a/lispref/minibuf.texi b/lispref/minibuf.texi
index 380cbca3aa3..f1d2569a466 100644
--- a/lispref/minibuf.texi
+++ b/lispref/minibuf.texi
@@ -1060,8 +1060,12 @@ A flag specifying the type of operation.
 @item
 @code{nil} specifies @code{try-completion}.  The completion function
 should return the completion of the specified string, or @code{t} if the
-string is an exact match already, or @code{nil} if the string matches no
-possibility.
+string is a unique and exact match already, or @code{nil} if the string
+matches no possibility.
+
+If the string is an exact match for one possibility, but also matches
+other longer possibilities, the function shuold return the string, not
+@code{t}.
 
 @item
 @code{t} specifies @code{all-completions}.  The completion function