gmm-utils.el (gmm-called-interactively-p): Restore as a macro.

[gnus] / lisp / gmm-utils.el

diff --git a/lisp/gmm-utils.el b/lisp/gmm-utils.el
index 975b833..ef60713 100644 (file)
--- a/lisp/gmm-utils.el
+++ b/lisp/gmm-utils.el
@@ -417,6 +417,47 @@ coding-system."
        (write-region start end filename append visit lockname))
     (write-region start end filename append visit lockname mustbenew)))
 
+;; `interactive-p' is obsolete since Emacs 23.2.
+(defmacro gmm-called-interactively-p (kind)
+  (condition-case nil
+      (progn
+       (eval '(called-interactively-p 'any))
+       ;; Emacs >=23.2
+       `(called-interactively-p ,kind))
+    ;; Emacs <23.2
+    (wrong-number-of-arguments '(called-interactively-p))
+    ;; XEmacs
+    (void-function '(interactive-p))))
+
+;; `flet' and `labels' are obsolete since Emacs 24.3.
+(defmacro gmm-flet (bindings &rest body)
+  "Make temporary overriding function definitions.
+This is an analogue of a dynamically scoped `let' that operates on
+the function cell of FUNCs rather than their value cell.
+
+\(fn ((FUNC ARGLIST BODY...) ...) FORM...)"
+  (require 'cl)
+  (if (fboundp 'cl-letf)
+      `(cl-letf ,(mapcar (lambda (binding)
+                          `((symbol-function ',(car binding))
+                            (lambda ,@(cdr binding))))
+                        bindings)
+        ,@body)
+    `(flet ,bindings ,@body)))
+(put 'gmm-flet 'lisp-indent-function 1)
+
+(defmacro gmm-labels (bindings &rest body)
+  "Make temporary function bindings.
+The bindings can be recursive and the scoping is lexical, but capturing
+them in closures will only work if `lexical-binding' is in use.  But in
+Emacs 24.2 and older, the lexical scoping is handled via `lexical-let'
+rather than relying on `lexical-binding'.
+
+\(fn ((FUNC ARGLIST BODY...) ...) FORM...)"
+  `(,(progn (require 'cl) (if (fboundp 'cl-labels) 'cl-labels 'labels))
+    ,bindings ,@body))
+(put 'gmm-labels 'lisp-indent-function 1)
+
 (provide 'gmm-utils)
 
 ;;; gmm-utils.el ends here