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Re: [h-e-w] Italic font + font-lock coloring results in glyph truncation

From: Eli Zaretskii
Subject: Re: [h-e-w] Italic font + font-lock coloring results in glyph truncation for Emacs on Windows.
Date: Wed, 18 Jul 2007 21:37:19 +0300

> Date: Mon, 16 Jul 2007 12:00:23 -0700
> From: "Tanveer Gani" <address@hidden>
> I've seen this bug persistently in many versions of GNU Emacs. It
> manifests itself as glyph truncation on the right edge when an italic
> font is used and font-lock mode is turned on.

Did you see this entry in etc/PROBLEMS?

    When "ClearType" method is selected as the "method to smooth edges of
    screen fonts" (in Display Properties, Appearance tab, under
    "Effects"), there are various problems related to display of
    characters: 2-pixel trace is left behind when moving overlays, bold
    fonts can be hard to read, small portions of some characters could
    appear chopped, etc.  This happens because, under ClearType,
    characters are drawn outside their advertised bounding box.  Emacs 21
    disabled the use of ClearType, whereas Emacs 22 allows it and has some
    code to enlarge the width of the bounding box.  Apparently, this
    display feature needs more changes to get it 100% right.  A workaround
    is to disable ClearType.

Do you have ClearType turned on?

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