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-rw-r--r--lisp/emacs-lisp/bytecomp.el10
1 files changed, 9 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 331d51c779f..eb2b1a22c31 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1256,7 +1256,15 @@ With argument, insert value in current buffer after the form."
(set-buffer (get-buffer-create " *Compiler Output*")))
(erase-buffer)
;; (emacs-lisp-mode)
- (setq case-fold-search nil))
+ (setq case-fold-search nil)
+
+ ;; This is a kludge. Some operating systems (OS/2) need to
+ ;; write files containing binary information specially.
+ ;; Under most circumstances, such files will be in binary
+ ;; overwrite mode, so those OS's use that flag to guess how
+ ;; they should write their data. Advise them that .elc files
+ ;; need to be written carefully.
+ (setq overwrite-mode 'overwrite-mode-binary))
(displaying-byte-compile-warnings
(save-excursion
(set-buffer inbuffer)