Changeset 24975c4

Timestamp:

11/09/2023 11:22:59 PM (7 months ago)

Author:

Ken Moffat <ken@…>

Branches:

12.1, ken/TL2024, ken/tuningfonts, lazarus, plabs/newcss, python3.11, rahul/power-profiles-daemon, renodr/vulkan-addition, trunk, xry111/llvm18

Children:

9f55648

Parents:

6fa792b

git-author:

Ken Moffat <ken@…> (11/09/2023 11:11:25 PM)

git-committer:

Ken Moffat <ken@…> (11/09/2023 11:22:59 PM)

Message:

Fix and simplify 'Prefer Chosen CJK fonts' :

I had a setup like this on one of my machines, now that I'm
looking at the detail of fontconfig in a local branch I discovered
that there were certain problems with the example:

1. I'm in an en locale, for pages that do not specify a locale

(or in vim/view, e.g. in mutt) the Japanese fonts were being
preferred.

2. Fontconfig does not consider UMing suitable for zh-sc so it

was hardly ever used - and it does not really belong in local.conf.

3, Really prefer a Japanese font for Sans Serif and monospace, but
no point listing two of them.

3. Comment where WenQuanYi Zen Hei is regarded as adequate and

therefore do not include it in these preferences, since it will
be picked up after them.

Files:

• introduction/welcome/changelog.xml (modified) (1 diff)
• x/installing/TTF-and-OTF-fonts.xml (modified) (1 diff)
• x/installing/tuning-fontconfig.xml (modified) (7 diffs)

introduction/welcome/changelog.xml

@@ -43 +43 @@
       <itemizedlist>
         <listitem>
+          <para>[ken] - Simplify the 'Prefer chosen CJK fonts' example
+          in 'tuning fontconfig' and ensure that DejaVu fonts are
+          preferred for non-CJK.</para>
+        </listitem>
+        <listitem>
           <para>[bdubbs] - Update to autofs-5.1.9. Fixes
           <ulink url="&blfs-ticket-root;18832">#18832</ulink>.</para>

x/installing/TTF-and-OTF-fonts.xml

@@ -743 +743 @@
     <para>
       In Korean, Batang or Myeongjo (the older name) are Serif, Dotum or
-      Gothic and are the main Sans fonts. BLFS previously recommended the
+      Gothic are the main Sans fonts. BLFS previously recommended the
       Baekmuk fonts, but the Nanum and Un fonts are now preferred to Baekmuk by
       <application>fontconfig</application> because of user requests.

x/installing/tuning-fontconfig.xml

@@ -523 +523 @@
       <para>
         The following example of a local configuration (i.e. one that applies
-        for all users of the machine) does several things:
+        for all users of the machine) does several things. It is particularly
+        appropriate where no language is specified, or for reading CJK text
+        in a non-CJK locale, and where the Japanese forms of the codepoints
+        shared with Chinese are preferred. In particular, alternative
+        approaches would be to specify a Chinese font ahead of the Japanese
+        font, meaning that only Kana symbols will be used from the Japanese
+        font, or to not specify DejaVu so that the first font in each set
+        of preferences is preferred for text using latin alphabets.
       </para>
 
@@ -529 +536 @@
         <listitem>
           <para>
-            If a Serif font is specified, it will prefer the <xref
-            linkend="UMing"/> variants, so that in the zh-cn, zh-hk and zh-tw
-            languages things should look good (also zh-sg which actually uses
-            the same settings as zh-cn) <emphasis>without</emphasis> affecting
-            Japanese.
+            If a Serif font is specified, it prefers <xref linkend="dejavu-fonts"/>.
+            If Han codepoints are found, or the Japanese language is specified,
+            the Mincho font from <xref linkend="IPAex"/> will be used. If Hangul
+            codepoints are found or the Korean language is specified, UnBatang
+            (see <xref linkend="Korean-fonts"/>) will be used: Change that line
+            If you installed a different Korean serif font. After that,
+            <xref linkend="wenquanyi-zenhei"/>  (Sans, but a default for Serif
+            and monospace) is used. A previous version of this page mentioned
+            using UMing which is a traditional-style chinese font that ships
+            with an old conf file preferring it for zh-tw and zh-hk language
+            codes (and for sans-serif and monospace). But without the conf file,
+            fontconfig will only treat it as suitable for zh-hk.
+            The conf file needs to be edited to current style and will then be
+            prepended, so specifying UMing does not belong in this
+            <filename>local.conf</filename> file.
           </para>
         </listitem>
         <listitem>
           <para>
-            It prefers the Japanese <xref linkend="IPAex"/> if they have been
-            installed (although <xref linkend="VLGothic"/> will take precedence
-            for (Japanese) Sans if it has also been installed.
-          </para>
-        </listitem>
-        <listitem>
-          <para>
-            Because <xref linkend="wenquanyi-zenhei"/> covers Korean Hangul
-            glyphs and is also preferred for Serif in
-            <filename>65-nonlatin.conf</filename>, if installed it will be used
-            by default for Korean Serif. To get a proper Serif font, the
-            UnBatang font is specified here - change that line if you installed
-            a different Serif font from the choice of <xref
-            linkend="Korean-fonts"/>.
+            For Sans Serif preferences again start with <xref linkend="dejavu-fonts"/>,
+            then <xref linkend="VLGothic"/> for Japanese before falling back to
+            WenQuanYi Zen Hei which is Sans and covers both Chinese and Korean
+            Hangul.
           </para>
         </listitem>
@@ -557 +564 @@
           <para>
             The Monospace fonts are forced to the preferred Sans fonts. If the
-            text is in Korean then <xref linkend="wenquanyi-zenhei"/> will be
-            used.
+            text is in Chinese or Korean then <xref
+            linkend="wenquanyi-zenhei"/> will be used.
           </para>
         </listitem>
@@ -565 +572 @@
       <para>
         In a non-CJK locale, the result is that suitable fonts will be used for
-        all variants of Chinese, Japanese and Hangul Korean. All other languages
+        all variants of Chinese, Japanese and Hangul Korean (but Japanese variants
+        of the glyphs shared with Chinese Han will be used). All other languages
         should already work if a font is present. As the <systemitem
         class="username">root</systemitem> user:
@@ -577 +585 @@
         &lt;family&gt;serif&lt;/family&gt;
         &lt;prefer&gt;
-            &lt;family&gt;AR PL UMing&lt;/family&gt;
+            &lt;family&gt;DejaVu Serif&lt;/family&gt;
             &lt;family&gt;IPAexMincho&lt;/family&gt;
             &lt;!-- WenQuanYi is preferred as Serif in 65-nonlatin.conf,
@@ -587 +595 @@
          &lt;family&gt;sans-serif&lt;/family&gt;
          &lt;prefer&gt;
-             &lt;family&gt;WenQuanYi Zen Hei&lt;/family&gt;
+             &lt;family&gt;DejaVu Sans&lt;/family&gt;
              &lt;family&gt;VL Gothic&lt;/family&gt;
-             &lt;family&gt;IPAexGothic&lt;/family&gt;
+         &lt;!-- This assumes WenQuanYi is good enough for Korean Sans --&gt;
          &lt;/prefer&gt;
     &lt;/alias&gt;
@@ -595 +603 @@
          &lt;family&gt;monospace&lt;/family&gt;
          &lt;prefer&gt;
+             &lt;family&gt;DejaVu Sans Mono&lt;/family&gt;
              &lt;family&gt;VL Gothic&lt;/family&gt;
-             &lt;family&gt;IPAexGothic&lt;/family&gt;
-             &lt;family&gt;WenQuanYi Zen Hei&lt;/family&gt;
+         &lt;!-- This assumes WenQuanYi is good enough for Korean Monospace --&gt;
          &lt;/prefer&gt;
     &lt;/alias&gt;