Re: Cairo font selection for Ethiopic

[Stephen Berman]

On Fri, 21 Jun 2019 19:52:36 +0900 address@hidden wrote:

>> On Fri, 21 Jun 2019 10:54:03 +0900 YAMAMOTO Mitsuharu
>> <address@hidden> wrote:
>>
>>> On Fri, 21 Jun 2019 04:30:09 +0900,
>>> Stephen Berman wrote:
>>>>
>>> Goha-Tibeb Zemen does not have glyphs for ASCII printables that the
>>> ftcr font backend relies on computing minimum/average/space width when
>>> opening the font.  The patch below should simulate the Xft behavior.
>>
>> Thanks.  I rebuilt Emacs --with-cairo with this patch but the Ethiopic
>> scripts in HELLO are still not displayed with Goha-Tibeb Zemen but also
>> not with the same fonts as before: now they are uniformly displayed with
>>
>> -Misc-Misc Fixed Wide-normal-normal-normal-ja-13-*-*-*-c-120-iso10646-1
>>
>> Is this the intended result of the patch?
>
> The patch enables us to use the Goha-Tibeb Zemen font on cairo
> build.  If you manually specify the font for Ethiopic characters,
> then they should be displayed with the font.
>
> (let ((script 'ethiopic)
>       (coverage))
>   (map-char-table
>    #'(lambda (range val)
>        (when (eq val script)
>        (if (consp range)
>            (setq range (cons (car range) (cdr range))))
>        (push range coverage)))
>    char-script-table)
>   (dolist (range coverage)
>     (set-fontset-font t range (font-spec :family "Goha-Tibeb Zemen"))))

Yes, that works, thanks.

> Whether it is selected automatically in the default setting is
> another problem and depends on several factors.  What are the
> outputs of the ldd command for both non-cairo and cairo builds?

Appended below; the only substantive difference (beside the addresses)
is that only the non-cairo build includes this:

libXft.so.2 => /usr/lib64/libXft.so.2

non-cairo build:

linux-vdso.so.1 (0x00007ffe653ef000)
libtiff.so.5 => /usr/lib64/libtiff.so.5 (0x00007f6573a4a000)
libjpeg.so.8 => /usr/lib64/libjpeg.so.8 (0x00007f65739b2000)
libpng16.so.16 => /usr/lib64/libpng16.so.16 (0x00007f657396f000)
libz.so.1 => /lib64/libz.so.1 (0x00007f6573955000)
libgif.so.7 => /usr/lib64/libgif.so.7 (0x00007f657394a000)
libXpm.so.4 => /usr/lib64/libXpm.so.4 (0x00007f6573937000)
libgtk-3.so.0 => /usr/lib64/libgtk-3.so.0 (0x00007f6573234000)
libgdk-3.so.0 => /usr/lib64/libgdk-3.so.0 (0x00007f6573136000)
libpangocairo-1.0.so.0 => /usr/lib64/libpangocairo-1.0.so.0 (0x00007f6573126000)
libpango-1.0.so.0 => /usr/lib64/libpango-1.0.so.0 (0x00007f65730dc000)
libatk-1.0.so.0 => /usr/lib64/libatk-1.0.so.0 (0x00007f65730b3000)
libcairo-gobject.so.2 => /usr/lib64/libcairo-gobject.so.2 (0x00007f65730a7000)
libcairo.so.2 => /usr/lib64/libcairo.so.2 (0x00007f6572f6d000)
libgdk_pixbuf-2.0.so.0 => /usr/lib64/libgdk_pixbuf-2.0.so.0 (0x00007f6572f45000)
libgio-2.0.so.0 => /usr/lib64/libgio-2.0.so.0 (0x00007f6572d75000)
libgobject-2.0.so.0 => /usr/lib64/libgobject-2.0.so.0 (0x00007f6572d19000)
libglib-2.0.so.0 => /usr/lib64/libglib-2.0.so.0 (0x00007f6572bf5000)
libSM.so.6 => /usr/lib64/libSM.so.6 (0x00007f6572bea000)
libICE.so.6 => /usr/lib64/libICE.so.6 (0x00007f6572bca000)
libX11.so.6 => /usr/lib64/libX11.so.6 (0x00007f6572a87000)
libX11-xcb.so.1 => /usr/lib64/libX11-xcb.so.1 (0x00007f6572a82000)
libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x00007f6572a57000)
libXft.so.2 => /usr/lib64/libXft.so.2 (0x00007f6572a3e000)
libXrender.so.1 => /usr/lib64/libXrender.so.1 (0x00007f6572a31000)
librsvg-2.so.2 => /usr/lib64/librsvg-2.so.2 (0x00007f65724bf000)
libm.so.6 => /lib64/libm.so.6 (0x00007f657237a000)
librt.so.1 => /lib64/librt.so.1 (0x00007f657236f000)
libdbus-1.so.3 => /usr/lib64/libdbus-1.so.3 (0x00007f657231b000)
libXrandr.so.2 => /usr/lib64/libXrandr.so.2 (0x00007f657230e000)
libXinerama.so.1 => /usr/lib64/libXinerama.so.1 (0x00007f6572309000)
libXfixes.so.3 => /usr/lib64/libXfixes.so.3 (0x00007f65722ff000)
libXext.so.6 => /usr/lib64/libXext.so.6 (0x00007f65722ea000)
libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x00007f657217f000)
libtinfo.so.6 => /lib64/libtinfo.so.6 (0x00007f657214d000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f6572121000)
libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x00007f6572067000)
libfontconfig.so.1 => /usr/lib64/libfontconfig.so.1 (0x00007f657201e000)
libharfbuzz.so.0 => /usr/lib64/libharfbuzz.so.0 (0x00007f6571f21000)
libotf.so.0 => /usr/lib64/libotf.so.0 (0x00007f6571f09000)
libm17n-core.so.0 => /usr/lib64/libm17n-core.so.0 (0x00007f6571eda000)
libm17n-flt.so.0 => /usr/lib64/libm17n-flt.so.0 (0x00007f6571ecd000)
libgnutls.so.30 => /usr/lib64/libgnutls.so.30 (0x00007f6571d16000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f6571cf3000)
libanl.so.1 => /lib64/libanl.so.1 (0x00007f6571ced000)
libgmp.so.10 => /usr/lib64/libgmp.so.10 (0x00007f6571c55000)
libc.so.6 => /lib64/libc.so.6 (0x00007f6571a91000)
liblzma.so.5 => /usr/lib64/liblzma.so.5 (0x00007f6571a5b000)
libjbig.so.2 => /usr/lib64/libjbig.so.2 (0x00007f6571a4d000)
libgmodule-2.0.so.0 => /usr/lib64/libgmodule-2.0.so.0 (0x00007f6571a45000)
libXi.so.6 => /usr/lib64/libXi.so.6 (0x00007f6571a32000)
libatk-bridge-2.0.so.0 => /usr/lib64/libatk-bridge-2.0.so.0 (0x00007f65719fb000)
libepoxy.so.0 => /usr/lib64/libepoxy.so.0 (0x00007f65718c3000)
libfribidi.so.0 => /usr/lib64/libfribidi.so.0 (0x00007f65718a5000)
libpangoft2-1.0.so.0 => /usr/lib64/libpangoft2-1.0.so.0 (0x00007f657188c000)
libXcursor.so.1 => /usr/lib64/libXcursor.so.1 (0x00007f657187d000)
libXcomposite.so.1 => /usr/lib64/libXcomposite.so.1 (0x00007f6571878000)
libXdamage.so.1 => /usr/lib64/libXdamage.so.1 (0x00007f6571873000)
libxkbcommon.so.0 => /usr/lib64/libxkbcommon.so.0 (0x00007f6571831000)
libwayland-cursor.so.0 => /usr/lib64/libwayland-cursor.so.0 (0x00007f6571827000)
libwayland-egl.so.1 => /usr/lib64/libwayland-egl.so.1 (0x00007f6571822000)
libwayland-client.so.0 => /usr/lib64/libwayland-client.so.0 (0x00007f657180e000)
libthai.so.0 => /usr/lib64/libthai.so.0 (0x00007f6571803000)
libpixman-1.so.0 => /usr/lib64/libpixman-1.so.0 (0x00007f657175d000)
libEGL.so.1 => /usr/lib64/libEGL.so.1 (0x00007f6571748000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f6571743000)
libxcb-shm.so.0 => /usr/lib64/libxcb-shm.so.0 (0x00007f657173c000)
libxcb-render.so.0 => /usr/lib64/libxcb-render.so.0 (0x00007f657172c000)
libGL.so.1 => /usr/lib64/libGL.so.1 (0x00007f6571693000)
libmount.so.1 => /usr/lib64/libmount.so.1 (0x00007f6571632000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f6571619000)
libffi.so.7 => /usr/lib64/libffi.so.7 (0x00007f657160d000)
libpcre.so.1 => /usr/lib64/libpcre.so.1 (0x00007f6571573000)
libuuid.so.1 => /usr/lib64/libuuid.so.1 (0x00007f657156a000)
libXau.so.6 => /usr/lib64/libXau.so.6 (0x00007f6571565000)
libcroco-0.6.so.3 => /usr/lib64/libcroco-0.6.so.3 (0x00007f6571527000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f657150d000)
/lib64/ld-linux-x86-64.so.2 (0x00007f6573ae9000)
libsystemd.so.0 => /usr/lib64/libsystemd.so.0 (0x00007f657144e000)
libbz2.so.1 => /usr/lib64/libbz2.so.1 (0x00007f657142e000)
libexpat.so.1 => /usr/lib64/libexpat.so.1 (0x00007f65713f9000)
libgraphite2.so.3 => /usr/lib64/libgraphite2.so.3 (0x00007f65713d4000)
libp11-kit.so.0 => /usr/lib64/libp11-kit.so.0 (0x00007f65712a2000)
libidn2.so.0 => /usr/lib64/libidn2.so.0 (0x00007f6571281000)
libunistring.so.2 => /usr/lib64/libunistring.so.2 (0x00007f65710fc000)
libtasn1.so.6 => /usr/lib64/libtasn1.so.6 (0x00007f65710e8000)
libnettle.so.6 => /usr/lib64/libnettle.so.6 (0x00007f65710ad000)
libhogweed.so.4 => /usr/lib64/libhogweed.so.4 (0x00007f6571073000)
libatspi.so.0 => /usr/lib64/libatspi.so.0 (0x00007f657103c000)
libdatrie.so.1 => /usr/lib64/libdatrie.so.1 (0x00007f6571032000)
libGLdispatch.so.0 => /usr/lib64/libGLdispatch.so.0 (0x00007f6570f75000)
libGLX.so.0 => /usr/lib64/libGLX.so.0 (0x00007f6570f41000)
libblkid.so.1 => /usr/lib64/libblkid.so.1 (0x00007f6570eeb000)
liblz4.so.1 => /usr/lib64/liblz4.so.1 (0x00007f6570ec9000)
libcap.so.2 => /usr/lib64/libcap.so.2 (0x00007f6570ec2000)
libgcrypt.so.20 => /usr/lib64/libgcrypt.so.20 (0x00007f6570da2000)
libgpg-error.so.0 => /usr/lib64/libgpg-error.so.0 (0x00007f6570d7e000)

cairo build:

linux-vdso.so.1 (0x00007ffc90f57000)
libtiff.so.5 => /usr/lib64/libtiff.so.5 (0x00007ffadd687000)
libjpeg.so.8 => /usr/lib64/libjpeg.so.8 (0x00007ffadd5ef000)
libpng16.so.16 => /usr/lib64/libpng16.so.16 (0x00007ffadd5ac000)
libz.so.1 => /lib64/libz.so.1 (0x00007ffadd592000)
libgif.so.7 => /usr/lib64/libgif.so.7 (0x00007ffadd587000)
libXpm.so.4 => /usr/lib64/libXpm.so.4 (0x00007ffadd574000)
libgtk-3.so.0 => /usr/lib64/libgtk-3.so.0 (0x00007ffadce71000)
libgdk-3.so.0 => /usr/lib64/libgdk-3.so.0 (0x00007ffadcd73000)
libpangocairo-1.0.so.0 => /usr/lib64/libpangocairo-1.0.so.0 (0x00007ffadcd63000)
libpango-1.0.so.0 => /usr/lib64/libpango-1.0.so.0 (0x00007ffadcd19000)
libatk-1.0.so.0 => /usr/lib64/libatk-1.0.so.0 (0x00007ffadccf0000)
libcairo-gobject.so.2 => /usr/lib64/libcairo-gobject.so.2 (0x00007ffadcce4000)
libcairo.so.2 => /usr/lib64/libcairo.so.2 (0x00007ffadcbaa000)
libgdk_pixbuf-2.0.so.0 => /usr/lib64/libgdk_pixbuf-2.0.so.0 (0x00007ffadcb82000)
libgio-2.0.so.0 => /usr/lib64/libgio-2.0.so.0 (0x00007ffadc9b2000)
libgobject-2.0.so.0 => /usr/lib64/libgobject-2.0.so.0 (0x00007ffadc956000)
libglib-2.0.so.0 => /usr/lib64/libglib-2.0.so.0 (0x00007ffadc832000)
libSM.so.6 => /usr/lib64/libSM.so.6 (0x00007ffadc827000)
libICE.so.6 => /usr/lib64/libICE.so.6 (0x00007ffadc807000)
libX11.so.6 => /usr/lib64/libX11.so.6 (0x00007ffadc6c4000)
libX11-xcb.so.1 => /usr/lib64/libX11-xcb.so.1 (0x00007ffadc6bf000)
libxcb.so.1 => /usr/lib64/libxcb.so.1 (0x00007ffadc694000)
libXrender.so.1 => /usr/lib64/libXrender.so.1 (0x00007ffadc687000)
librsvg-2.so.2 => /usr/lib64/librsvg-2.so.2 (0x00007ffadc117000)
libm.so.6 => /lib64/libm.so.6 (0x00007ffadbfd0000)
librt.so.1 => /lib64/librt.so.1 (0x00007ffadbfc5000)
libdbus-1.so.3 => /usr/lib64/libdbus-1.so.3 (0x00007ffadbf71000)
libXrandr.so.2 => /usr/lib64/libXrandr.so.2 (0x00007ffadbf64000)
libXinerama.so.1 => /usr/lib64/libXinerama.so.1 (0x00007ffadbf5f000)
libXfixes.so.3 => /usr/lib64/libXfixes.so.3 (0x00007ffadbf57000)
libXext.so.6 => /usr/lib64/libXext.so.6 (0x00007ffadbf40000)
libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x00007ffadbdd5000)
libtinfo.so.6 => /lib64/libtinfo.so.6 (0x00007ffadbda3000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007ffadbd77000)
libfreetype.so.6 => /usr/lib64/libfreetype.so.6 (0x00007ffadbcbd000)
libfontconfig.so.1 => /usr/lib64/libfontconfig.so.1 (0x00007ffadbc76000)
libharfbuzz.so.0 => /usr/lib64/libharfbuzz.so.0 (0x00007ffadbb77000)
libotf.so.0 => /usr/lib64/libotf.so.0 (0x00007ffadbb5f000)
libm17n-core.so.0 => /usr/lib64/libm17n-core.so.0 (0x00007ffadbb30000)
libm17n-flt.so.0 => /usr/lib64/libm17n-flt.so.0 (0x00007ffadbb23000)
libgnutls.so.30 => /usr/lib64/libgnutls.so.30 (0x00007ffadb96c000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ffadb94b000)
libanl.so.1 => /lib64/libanl.so.1 (0x00007ffadb943000)
libgmp.so.10 => /usr/lib64/libgmp.so.10 (0x00007ffadb8ab000)
libc.so.6 => /lib64/libc.so.6 (0x00007ffadb6e7000)
liblzma.so.5 => /usr/lib64/liblzma.so.5 (0x00007ffadb6b1000)
libjbig.so.2 => /usr/lib64/libjbig.so.2 (0x00007ffadb6a3000)
libgmodule-2.0.so.0 => /usr/lib64/libgmodule-2.0.so.0 (0x00007ffadb69d000)
libXi.so.6 => /usr/lib64/libXi.so.6 (0x00007ffadb688000)
libatk-bridge-2.0.so.0 => /usr/lib64/libatk-bridge-2.0.so.0 (0x00007ffadb651000)
libepoxy.so.0 => /usr/lib64/libepoxy.so.0 (0x00007ffadb519000)
libfribidi.so.0 => /usr/lib64/libfribidi.so.0 (0x00007ffadb4fb000)
libpangoft2-1.0.so.0 => /usr/lib64/libpangoft2-1.0.so.0 (0x00007ffadb4e2000)
libXcursor.so.1 => /usr/lib64/libXcursor.so.1 (0x00007ffadb4d5000)
libXcomposite.so.1 => /usr/lib64/libXcomposite.so.1 (0x00007ffadb4ce000)
libXdamage.so.1 => /usr/lib64/libXdamage.so.1 (0x00007ffadb4c9000)
libxkbcommon.so.0 => /usr/lib64/libxkbcommon.so.0 (0x00007ffadb487000)
libwayland-cursor.so.0 => /usr/lib64/libwayland-cursor.so.0 (0x00007ffadb47d000)
libwayland-egl.so.1 => /usr/lib64/libwayland-egl.so.1 (0x00007ffadb478000)
libwayland-client.so.0 => /usr/lib64/libwayland-client.so.0 (0x00007ffadb466000)
libthai.so.0 => /usr/lib64/libthai.so.0 (0x00007ffadb459000)
libpixman-1.so.0 => /usr/lib64/libpixman-1.so.0 (0x00007ffadb3b3000)
libEGL.so.1 => /usr/lib64/libEGL.so.1 (0x00007ffadb39e000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007ffadb399000)
libxcb-shm.so.0 => /usr/lib64/libxcb-shm.so.0 (0x00007ffadb394000)
libxcb-render.so.0 => /usr/lib64/libxcb-render.so.0 (0x00007ffadb384000)
libGL.so.1 => /usr/lib64/libGL.so.1 (0x00007ffadb2e9000)
libmount.so.1 => /usr/lib64/libmount.so.1 (0x00007ffadb288000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x00007ffadb26f000)
libffi.so.7 => /usr/lib64/libffi.so.7 (0x00007ffadb263000)
libpcre.so.1 => /usr/lib64/libpcre.so.1 (0x00007ffadb1cb000)
libuuid.so.1 => /usr/lib64/libuuid.so.1 (0x00007ffadb1c0000)
libXau.so.6 => /usr/lib64/libXau.so.6 (0x00007ffadb1bb000)
libcroco-0.6.so.3 => /usr/lib64/libcroco-0.6.so.3 (0x00007ffadb17d000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007ffadb163000)
/lib64/ld-linux-x86-64.so.2 (0x00007ffadd726000)
libsystemd.so.0 => /usr/lib64/libsystemd.so.0 (0x00007ffadb0a6000)
libbz2.so.1 => /usr/lib64/libbz2.so.1 (0x00007ffadb084000)
libexpat.so.1 => /usr/lib64/libexpat.so.1 (0x00007ffadb04f000)
libgraphite2.so.3 => /usr/lib64/libgraphite2.so.3 (0x00007ffadb02a000)
libp11-kit.so.0 => /usr/lib64/libp11-kit.so.0 (0x00007ffadaef8000)
libidn2.so.0 => /usr/lib64/libidn2.so.0 (0x00007ffadaed9000)
libunistring.so.2 => /usr/lib64/libunistring.so.2 (0x00007ffadad54000)
libtasn1.so.6 => /usr/lib64/libtasn1.so.6 (0x00007ffadad3e000)
libnettle.so.6 => /usr/lib64/libnettle.so.6 (0x00007ffadad03000)
libhogweed.so.4 => /usr/lib64/libhogweed.so.4 (0x00007ffadacc9000)
libatspi.so.0 => /usr/lib64/libatspi.so.0 (0x00007ffadac94000)
libdatrie.so.1 => /usr/lib64/libdatrie.so.1 (0x00007ffadac8a000)
libGLdispatch.so.0 => /usr/lib64/libGLdispatch.so.0 (0x00007ffadabcb000)
libGLX.so.0 => /usr/lib64/libGLX.so.0 (0x00007ffadab97000)
libblkid.so.1 => /usr/lib64/libblkid.so.1 (0x00007ffadab41000)
liblz4.so.1 => /usr/lib64/liblz4.so.1 (0x00007ffadab21000)
libcap.so.2 => /usr/lib64/libcap.so.2 (0x00007ffadab1a000)
libgcrypt.so.20 => /usr/lib64/libgcrypt.so.20 (0x00007ffada9f8000)
libgpg-error.so.0 => /usr/lib64/libgpg-error.so.0 (0x00007ffada9d4000)

Steve Berman