From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Keith David Bershatsky Newsgroups: gmane.emacs.bugs Subject: bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line. 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Original-Received: from cpe-45-48-239-195.socal.res.rr.com ([45.48.239.195]:49858 helo=server.local) by gator3053.hostgator.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92) (envelope-from ) id 1hm7Ur-003LZi-8k for bug-gnu-emacs@gnu.org; Fri, 12 Jul 2019 21:10:45 -0500 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator3053.hostgator.com X-AntiAbuse: Original Domain - gnu.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - lawlist.com X-BWhitelist: no X-Source-IP: 45.48.239.195 X-Source-L: No X-Exim-ID: 1hm7Ur-003LZi-8k X-Source-Sender: cpe-45-48-239-195.socal.res.rr.com (server.local) [45.48.239.195]:49858 X-Source-Auth: lawlist X-Email-Count: 1 X-Source-Cap: bGF3bGlzdDtsYXdsaXN0O2dhdG9yMzA1My5ob3N0Z2F0b3IuY29t X-Local-Domain: yes X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:162817 Archived-At: Step 1: Launch Emacs 26. Step 2: Evaluate the following code. (progn (find-library "simple") (pixel-scroll-mode 1) (re-search-forward "\t\t\t\t\t" nil t) (set-window-start (selected-window) (match-beginning 0)) (setq header-line-format "hello-world") (setq buffer-display-table (make-display-table)) (aset buffer-display-table ?\t (vector (make-glyph-code ?\u00BB 'font-lock-warning-face) (make-glyph-code ?\t 'highlight))) (setq tab-width 8)) Step 3: Move the mousewheel downward one time; i.e., one ratchet. Step 4: Observe the visible stretch glyphs overwriting the header-line. BEHAVIOR EXPECTED: The header-line should not be overwritten by the visible stretch glyphs that are being scrolled upwards from the row beneath the header-line. I am on OSX 10.6.8 and performed this minimal working example with: GNU Emacs 26.1 (build 1, x86_64-apple-darwin10.8.0, NS appkit-1038.36 Version 10.6.8 (Build 10K549)) of 2018-05-30