Remove the dynamic-docstring-function feature.

* emacs-lisp/advice.el (ad--make-advised-docstring): Change args.
Ignore function-documentation property when getting documentation.
(ad-activate-advised-definition): Use function-documentation
generate the docstring.
(ad-make-advised-definition): Don't call
ad-make-advised-definition-docstring.
(ad-make-advised-definition-docstring, ad-advised-definition-p):
Delete functions.

* emacs-lisp/nadvice.el (advice--make-docstring): Change args.
(advice--docstring): Delete variable.
(advice--make-1): Leave the docstring empty.
(advice-add): Use function-documentation for advised docstring.

* progmodes/sql.el (sql-help): Use function-documentation instead
of dynamic-docstring-function property.  No need to autoload now.
(sql--help-docstring): New variable.
(sql--make-help-docstring): Use it.

* doc.c (Fdocumentation): Remove dynamic-docstring-function.

1 files changed, 0 insertions, 3 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 5762ebf0fcd..44764f3cde0 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -995,9 +995,6 @@ selected among several alternatives, as a matter of user preference.
 ** The `defalias-fset-function' property lets you catch `defalias'
 calls, and redirect them to your own function, instead of `fset'.
 
-** Docstrings can be made dynamic by adding a `dynamic-docstring-function'
-text-property on the first char.
-
 +++
 ** New variable `enable-dir-local-variables'.
 Directory-local variables are ignored if this is nil.  This may be