Hi, The problem is that even though we have serif Japanese fonts (maybe Chinese too), Noto Sans CJK * is selected as an alias of "Serif".

So, as long as Noto CJK has not serif shape, it should be ok, I think. Font for e. g. latin text should be taken from the another (serif) fonts, in our case 'BlaBla Serif' if it is installed on the system.

How does fontconfig understand a font provides serif glyphs? What is strange, I cannot find IPA P Mincho (IPA P明朝), which has been the default alias of "Serif" for Japanese, if 59-noto-sans-cjk.conf exists. $ fc-match -s "Serif" NotoSansCJK.ttc: "Noto Sans CJK JP" "Regular" RobotoSlab-Regular.ttf: "Roboto Slab" "Regular" LiberationSerif-Regular.ttf: "Liberation Serif" "Regular" DejaVuSerif.ttf: "DejaVu Serif" "Book" DejaVuSerif-Bold.ttf: "DejaVu Serif" "Bold" DejaVuSerif-Italic.ttf: "DejaVu Serif" "Italic" DejaVuSerif-BoldItalic.ttf: "DejaVu Serif" "Bold Italic" luxirr.ttf: "Luxi Serif" "Regular" FreeSerif.ttf: "FreeSerif" "Regular" bsmiuee.pfb: "AR PL Mingti2L Big5" "ee" bsmiuf6.pfb: "AR PL Mingti2L Big5" "f6" bsmiuf7.pfb: "AR PL Mingti2L Big5" "f7" bsmiuf8.pfb: "AR PL Mingti2L Big5" "f8" (snip) $ sudo rm 59-noto-sans-cjk.conf $ fc-match -s "Serif" ipamp.ttf: "IPA P明朝" "Regular" RobotoSlab-Regular.ttf: "Roboto Slab" "Regular" LiberationSerif-Regular.ttf: "Liberation Serif" "Regular" DejaVuSerif.ttf: "DejaVu Serif" "Book" DejaVuSerif-Bold.ttf: "DejaVu Serif" "Bold" DejaVuSerif-Italic.ttf: "DejaVu Serif" "Italic" DejaVuSerif-BoldItalic.ttf: "DejaVu Serif" "Bold Italic" luxirr.ttf: "Luxi Serif" "Regular" FreeSerif.ttf: "FreeSerif" "Regular" ipaexm.ttf: "IPAex明朝" "Regular" sazanami-mincho.ttf: "さざなみ明朝" "Mincho-Regular" gbsnu24.pfb: "AR PL SungtiL GB" "24" gbsnu31.pfb: "AR PL SungtiL GB" "31" gbsnu4e.pfb: "AR PL SungtiL GB" "4e" gbsnu4f.pfb: "AR PL SungtiL GB" "4f" gbsnu50.pfb: "AR PL SungtiL GB" "50" (snip) On 2016/09/01 16:44, ZhaoQiang wrote:

Hi Dear TAKEYAMA:

Maybe this email will answer the question. I'm not sure if Petr already send this to you, So I send it again.

If there are any questions, please reply this email to openSUSE M17N mail list.

Best Regards !

主题: Re: Fwd: [opensuse-m17n] noto-sans-cjk-fonts' config replaces "serif" with "Noto Sans CJK *" (sans) 日期: Wed, 31 Aug 2016 12:49:32 +0200 发件人: Petr Gajdos <pgajdos@suse.cz> 收件人: Qiang Zhao <qzhao@suse.com>

Hello Qiang,

ccing Marguerite, the author of this file and Takashi.

This is not really an assignment, this rule is _prepending_ serif keyword whenever it appears in the family list (see also <prefer> tag). So all families, that are prepended sooner, are in the list with higher priority while creating a pattern. For example.

BEFORE family: 'BlaBla Serif' 'Liberation Serif' serif

AFTER family: 'BlaBla Serif' 'Liberation Serif' 'Noto Sans CJK JP' serif

Now, when some asks for serif, then all fonconfig rules are applied to the pattern including that one you specified.

After that, according some metrics, the best font on the system is chosen. Of course, it also depends on the text language (needed characters).

So, as long as Noto CJK has not serif shape, it should be ok, I think. Font for e. g. latin text should be taken from the another (serif) fonts, in our case 'BlaBla Serif' if it is installed on the system.

Petr

...

-------- 转发的消息 -------- 主题: [opensuse-m17n] noto-sans-cjk-fonts' config replaces "serif" with "Noto Sans CJK *" (sans) 日期: Sun, 28 Aug 2016 16:16:07 +0900 发件人: Fuminobu TAKEYAMA <ftake@geeko.jp> 收件人: opensuse-m17n@opensuse.org

Hi all,

I just noticed that 59-noto-sans-cjk.conf provided by noto-sans-cjk-fonts replaces "serif" with "Noto Sans CJK JP/TC/SC/KR".

Is there any intention to assign sans-serif fonts to serif?

<match target="pattern"> <test qual="any" name="family" compare="eq"> <string>serif</string> </test> <test name="lang" compare="eq"> <string>ja</string> </test> <edit name="family" mode="prepend"> <string>Noto Sans CJK JP</string> </edit> </match>

I also think changing overriding alias preference by a font config file in each font package.

Installing noto-sans-cjk-fonts accidentally changes system fonts even though they want to use those fonts only for printing. This also breaks configuration by yast-fonts.

We should update the fontsconfig package in order to change default family of "serif", "sans serif", "monospace"

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