[Emacs-diffs] emacs-26 5999401: Note that choose-completion-string-functions funcs take four args

[Eric Abrahamsen]

branch: emacs-26
commit 59994015f194985dbcb7f45a874c7646a223d49e
Author: Eric Abrahamsen <address@hidden>
Commit: Eric Abrahamsen <address@hidden>

    Note that choose-completion-string-functions funcs take four args
    
    * lisp/simple.el (choose-completion-string-functions): Functions in
      this list actually need to accept four arguments, though the fourth
      should be ignored.
---
 lisp/simple.el | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lisp/simple.el b/lisp/simple.el
index 2646d7b..a0f2da7 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -8181,6 +8181,9 @@ CHOICE - the string to insert in the buffer,
 BUFFER - the buffer in which the choice should be inserted,
 BASE-POSITION - where to insert the completion.
 
+Functions should also accept and ignore a potential fourth
+argument, passed for backwards compatibility.
+
 If a function in the list returns non-nil, that function is supposed
 to have inserted the CHOICE in the BUFFER, and possibly exited
 the minibuffer; no further functions will be called.