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Diffstat (limited to 'lisp/emacs-lisp/bytecomp.el')
| -rw-r--r-- | lisp/emacs-lisp/bytecomp.el | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el index a65a355bfdf..934c0f01fcd 100644 --- a/lisp/emacs-lisp/bytecomp.el +++ b/lisp/emacs-lisp/bytecomp.el @@ -4539,6 +4539,16 @@ and corresponding effects." (setq command-line-args-left (cdr command-line-args-left))) (kill-emacs 0)) +;;; Core compiler macros. + +(put 'featurep 'compiler-macro + (lambda (form feature &rest _ignore) + ;; Emacs-21's byte-code doesn't run under XEmacs or SXEmacs anyway, so + ;; we can safely optimize away this test. + (if (member feature '('xemacs 'sxemacs 'emacs)) + (eval form) + form))) + (provide 'byte-compile) (provide 'bytecomp) |