Doc string update for tramp-password-prompt-regexp

* lisp/net/tramp.el (tramp-password-prompt-regexp): Mention
password-word-equivalents in the doc string.

1 files changed, 5 insertions, 0 deletions

diff --git a/lisp/net/tramp.el b/lisp/net/tramp.el
index 96446399dd6..2ae28b8758f 100644
--- a/lisp/net/tramp.el
+++ b/lisp/net/tramp.el
@@ -584,6 +584,11 @@ This regexp must match both `tramp-initial-end-of-output' and
   "Regexp matching password-like prompts.
 The regexp should match at end of buffer.
 
+This variable is, by default, initialised from
+`password-word-equivalents' when tramp is loaded, and it is
+usually more convenient to add new passphrases to that variable
+instead of altering this variable.
+
 The `sudo' program appears to insert a `^@' character into the prompt."
   :version "24.4"
   :type 'regexp)