+ -*-lucidatypewriter-* is from the 'xfonts-100dpi' package in
+ Debian/Ubuntu. It's usually (54.46% of systems), but not always,
+ installed whenever an X.org server (57.96% of systems) is. It might
+ be a good idea for this and xfonts-75dpi to be recommended
+ dependencies of XScreenSaver in Debian, but that's neither here nor
+ there. https://qa.debian.org/popcon.php?package=xorg
+ https://qa.debian.org/popcon.php?package=xfonts-100dpi
+
+ 2. It normally resolves to the PCF font... but not always.
+
+ Fontconfig has /etc/fonts/conf.d/ (it's /opt/local/etc/fonts/conf.d/
+ with MacPorts) containing symlinks to configuration files. And both
+ Debian and Ubuntu normally has a 70-no-bitmaps.conf, installed as part
+ of the 'fontconfig-config' package. And the 70-no-bitmaps.conf
+ symlink... disables bitmap fonts.
+
+ Without bitmap fonts, I get DejaVu Sans.
+
+ 3. There's another symlink of interest here:
+ /etc/fonts/conf.d/10-scale-bitmap-fonts.conf. This adds space to the
+ right of glyphs of bitmap fonts when the requested size of the font is
+ larger than the actual bitmap font. Ubuntu and MacPorts has this one.
+
+ This specifically is causing text to have excessive character spacing.
+
+ (jwz asks: WHY WOULD ANYONE EVER WANT THIS BEHAVIOR?)
+
+ 4. Notice that I'm only talking about Debian and Ubuntu. Other distros
+ will probably have different symlinks in /etc/fonts/conf.d/. So yes,
+ this can be an issue on Linux as well as MacOS.
+ */
+ {
+ XGlyphInfo extents;
+ int rbearing, width;
+ float ratio;
+ float min = 0.8;
+
+ XftTextExtentsUtf8 (s->dpy, se->xftfont, (FcChar8 *) "M", 1, &extents);
+ rbearing = extents.width - extents.x;
+ width = extents.xOff;
+ ratio = rbearing / (float) width;
+
+# ifdef DEBUG
+ if (s->debug_p)
+ fprintf (stderr, "%s: M ratio %.2f (%d %d): %s\n", progname,
+ ratio, rbearing, width, pattern2);
+# endif
+
+ if (ratio < min && !s->font_override)
+ {
+# ifdef DEBUG
+ if (s->debug_p)
+ fprintf (stderr, "%s: skipping font with broken metrics: %s\n",
+ progname, pattern2);
+# endif
+ return False;
+ }
+ }
+
+
+# ifdef DEBUG