Add note about Tramp completion to completion-styles doc string

* lisp/minibuffer.el (completion-styles): Add note about Tramp
completion (bug#37954).

diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
index 2724b5a3e6d49ec01f49652a15da80bb3ce1ace5..0ef846ccd78bca682a873099290aed167a87639d 100644 (file)
--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -985,7 +985,11 @@ and DOC describes the way this style of completion works.")
 The available styles are listed in `completion-styles-alist'.
 
 Note that `completion-category-overrides' may override these
-styles for specific categories, such as files, buffers, etc."
+styles for specific categories, such as files, buffers, etc.
+
+Note that Tramp host name completion (e.g., \"/ssh:ho<TAB>\")
+currently doesn't work if this list doesn't contain at least one
+of `basic', `emacs22' or `emacs21'."
   :type completion--styles-type
   :version "23.1")