Commit 9993f59a authored by Eli Zaretskii's avatar Eli Zaretskii

(msdos-last-help-message): New defvar.

(msdos-show-help): Use it to avoid saving the last message if it was also
a help message (Bug#2895).
parent 92655f6c
2009-04-08 Eli Zaretskii <eliz@gnu.org>
* term/pc-win.el (msdos-last-help-message): New defvar.
(msdos-show-help): Use it to avoid saving the last message if it
was also a help message (Bug#2895).
* mail/rmail.el (rmail-simplified-subject): Normalize whitespace
in subject. This resurrects a feature, lost in transition to
mbox, whereby Subject is matched even if it's broken into several
......
......@@ -248,23 +248,30 @@ support other types of selections."
(fset 'set-cursor-color 'ignore) ; Hardware determined by char under.
(fset 'set-border-color 'ignore) ; Not useful.
(defvar msdos-last-help-message nil
"The last help message received via `show-help-function'.
This is used by `msdos-show-help'.")
(defvar msdos-previous-message nil
"The content of the echo area before help echo was displayed.")
(defun msdos-show-help (help)
"Function installed as `show-help-function' on MS-DOS frames."
(when (and (not (window-minibuffer-p)) ;Don't overwrite minibuffer contents.
;; Don't know how to reproduce it in Elisp:
;; Don't overwrite a keystroke echo.
;; (NILP (echo_message_buffer) || ok_to_overwrite_keystroke_echo)
(not cursor-in-echo-area)) ;Don't overwrite a prompt.
(cond
((stringp help)
(unless msdos-previous-message
(setq help (replace-regexp-in-string "\n" ", " help))
(unless (or msdos-previous-message
(string-equal help (current-message))
(and (stringp msdos-last-help-message)
(string-equal msdos-last-help-message
(current-message))))
(setq msdos-previous-message (current-message)))
(setq msdos-last-help-message help)
(let ((message-truncate-lines nil)
(message-log-max nil))
(message "%s" (replace-regexp-in-string "\n" ", " help))))
(message "%s" help)))
((stringp msdos-previous-message)
(let ((message-log-max nil))
(message "%s" msdos-previous-message)
......
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