Since this is in redisplay, could you look at it? ------- Start of forwarded message ------- Envelope-to: rms@gnu.org Delivery-date: Mon, 28 Oct 2002 11:54:08 -0500 X-Authentication-Warning: sykes.suse.de: schwab set sender to schwab@suse.de using -f To: emacs-devel@gnu.org Subject: Display bug with miscomputed window-start X-Yow: I don't think you fellows would do so much RAPING and PILLAGING if you played more PINBALL and watched CABLE TELEVISION!! From: Andreas Schwab Sender: emacs-devel-admin@gnu.org Date: Mon, 28 Oct 2002 17:48:49 +0100 Redisplay does not correctly handle characters that wrap around at the right margin. To reproduce: - - Insert a bunch of ^A (C-q C-a) in a buffer so that the line wraps around - - Go to point-min - - If there is an even number of columns insert a space, so that the last ^A in the line wraps around, i.e the ^ is in the last column and the A appears at the start of the next screen line. - - Do M-1 C-v (scroll-up 1) The cursor will now be somewhere in the middle of the window, maybe not even inside any buffer text. Now click on first visible ^A to move point there and evaluate (list (point) (window-start)). You will get two different numbers that are off by one (`(42 41)' for an 80 column display). Note that if you change the character that wraps around to a TAB this bug does not occur. Andreas. - -- Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 Nürnberg Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different." _______________________________________________ Emacs-devel mailing list Emacs-devel@gnu.org http://mail.gnu.org/mailman/listinfo/emacs-devel ------- End of forwarded message -------