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Message-ID: <9305a392-8b90-ce3e-693a-96f82f52cdae@gmail.com>
Date: Mon, 19 Jul 2021 20:12:36 +0900
From: Akira Yokosawa <akiyks@...il.com>
To: Jonathan Corbet <corbet@....net>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
"Wu X.C." <bobwxc@...il.cn>, SeongJae Park <sj38.park@...il.com>
Cc: Hu Haowen <src.res@...il.cn>,
Shinwoo Lee <shinwoo.lee.us@...il.com>,
linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
Akira Yokosawa <akiyks@...il.com>
Subject: [RFC PATCH v2 2/7] docs: pdfdocs: Add CJK-language-specific font
settings
ko_KR and ja_JP translations have their preferred glyph sets
different from that of zh_CN.
To switch CJK font in the middle of the translations, introduce custom
LaTeX macros listed below:
\kerneldocBeginSC
\kerneldocEndSC
\kerneldocBeginKR
\kerneldocEndKR
\kerneldocBeginJP
\kerneldocEndJP
Note that CJKmainfont is changed to "Noto Serif CJK SC" as it suits well
with the roman font of Latin letters.
As for Korean translations, inter-phrase spaces in Hangul text can be
preserved by the \xeCJKsetup{CJKspace=true} option.
As for monospace font, employing "Noto Sans Mono CJK SC" globally
will result in sub-optimal look of literal blocks in Latin documents
due to its rather tight width.
So, localize the font choice by adding conf.py under
Documentation/translations/.
The additional conf.py is enabled when the command:
make SPHINXDIRS=translations pdfdocs
is used to build the PDF.
Resulting translations.pdf (under Documentation/output/translations/pdf)
will have properly aligned ascii-art figures except for those in Korean
translations.
NOTE 1: Korean ascii-art figures' mis-alignment is due to the fact that
Hangul characters in "Noto Sans Mono CJK KR" are slightly narrower than
Hanja characters.
NOTE 2: Custom macros added here do not imply \kerneldocCJK{on|off}.
This is intentional. For example, \kerneldocCJKoff needs to be
at the top of Italian translations' index.rst for the footer of
final zh_CN page to be properly typeset.
NOTE 3: Actual implementation of added macros has rooms to improve.
Signed-off-by: Akira Yokosawa <akiyks@...il.com>
---
Documentation/conf.py | 44 +++++++++++++++++++++-
Documentation/translations/conf.py | 12 ++++++
Documentation/translations/ja_JP/index.rst | 5 +++
Documentation/translations/ko_KR/index.rst | 2 +
Documentation/translations/zh_CN/index.rst | 5 +++
5 files changed, 66 insertions(+), 2 deletions(-)
create mode 100644 Documentation/translations/conf.py
diff --git a/Documentation/conf.py b/Documentation/conf.py
index b440cb606d22..a61628339d55 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -360,11 +360,45 @@ latex_elements['preamble'] += '''
\\IfFontExistsTF{Noto Sans CJK SC}{
% This is needed for translations
\\usepackage{xeCJK}
- \\setCJKmainfont{Noto Sans CJK SC}
+ \\setCJKmainfont{Noto Serif CJK SC}
+ \\setCJKsansfont{Noto Sans CJK SC}
+ \\setCJKmonofont{Noto Sans Mono CJK SC}
+ % CJK Language-specific font choices
+ \\newCJKfontfamily[SCserif]\\scserif{Noto Serif CJK SC}
+ \\newCJKfontfamily[SCsans]\\scsans{Noto Sans CJK SC}
+ \\newCJKfontfamily[SCmono]\\scmono{Noto Sans Mono CJK SC}
+ \\newCJKfontfamily[KRserif]\\krserif{Noto Serif CJK KR}
+ \\newCJKfontfamily[KRsans]\\krsans{Noto Sans CJK KR}
+ \\newCJKfontfamily[KRmono]\\krmono{Noto Sans Mono CJK KR}
+ \\newCJKfontfamily[JPserif]\\jpserif{Noto Serif CJK JP}
+ \\newCJKfontfamily[JPsans]\\jpsans{Noto Sans CJK JP}
+ \\newCJKfontfamily[JPmono]\\jpmono{Noto Sans Mono CJK JP}
% Define custom macros to on/off CJK
\\newcommand{\\kerneldocCJKon}{\\makexeCJKactive}
\\newcommand{\\kerneldocCJKoff}{\\makexeCJKinactive}
- % To customize \sphinxtableofcontents
+ \\newcommand{\\kerneldocBeginSC}{%
+ \\begingroup%
+ \\scserif%
+ }
+ \\newcommand{\\kerneldocEndSC}{\\endgroup}
+ \\newcommand{\\kerneldocBeginKR}{%
+ \\begingroup%
+ \\krserif%
+ \\renewcommand{\\CJKrmdefault}{KRserif}%
+ \\renewcommand{\\CJKsfdefault}{KRsans}%
+ \\renewcommand{\\CJKttdefault}{KRmono}%
+ \\xeCJKsetup{CJKspace = true} % For inter-phrase space
+ }
+ \\newcommand{\\kerneldocEndKR}{\\endgroup}
+ \\newcommand{\\kerneldocBeginJP}{%
+ \\begingroup%
+ \\jpserif%
+ \\renewcommand{\\CJKrmdefault}{JPserif}%
+ \\renewcommand{\\CJKsfdefault}{JPsans}%
+ \\renewcommand{\\CJKttdefault}{JPmono}%
+ }
+ \\newcommand{\\kerneldocEndJP}{\\endgroup}
+ % To customize \\sphinxtableofcontents
\\usepackage{etoolbox}
% Inactivate CJK after tableofcontents
\\apptocmd{\\sphinxtableofcontents}{\\kerneldocCJKoff}{}{}
@@ -372,6 +406,12 @@ latex_elements['preamble'] += '''
% Custom macros to on/off CJK (Dummy)
\\newcommand{\\kerneldocCJKon}{}
\\newcommand{\\kerneldocCJKoff}{}
+ \\newcommand{\\kerneldocBeginSC}{}
+ \\newcommand{\\kerneldocEndSC}{}
+ \\newcommand{\\kerneldocBeginKR}{}
+ \\newcommand{\\kerneldocEndKR}{}
+ \\newcommand{\\kerneldocBeginJP}{}
+ \\newcommand{\\kerneldocEndJP}{}
}
'''
diff --git a/Documentation/translations/conf.py b/Documentation/translations/conf.py
new file mode 100644
index 000000000000..e859c2e19e8b
--- /dev/null
+++ b/Documentation/translations/conf.py
@@ -0,0 +1,12 @@
+# -*- coding: utf-8 -*-
+# SPDX-License-Identifier: GPL-2.0
+
+# -- Additinal options for LaTeX output ----------------------------------
+# font config for ascii-art alignment
+
+latex_elements['preamble'] += '''
+ \\IfFontExistsTF{Noto Sans CJK SC}{
+ % For CJK ascii-art alignment
+ \\setmonofont{Noto Sans Mono CJK SC}
+ }{}
+'''
diff --git a/Documentation/translations/ja_JP/index.rst b/Documentation/translations/ja_JP/index.rst
index f94ba62d41c3..88d4d98eed15 100644
--- a/Documentation/translations/ja_JP/index.rst
+++ b/Documentation/translations/ja_JP/index.rst
@@ -3,6 +3,7 @@
\renewcommand\thesection*
\renewcommand\thesubsection*
\kerneldocCJKon
+ \kerneldocBeginJP
Japanese translations
=====================
@@ -11,3 +12,7 @@ Japanese translations
:maxdepth: 1
howto
+
+.. raw:: latex
+
+ \kerneldocEndJP
diff --git a/Documentation/translations/ko_KR/index.rst b/Documentation/translations/ko_KR/index.rst
index 6ae258118bdf..f636b482fb4c 100644
--- a/Documentation/translations/ko_KR/index.rst
+++ b/Documentation/translations/ko_KR/index.rst
@@ -3,6 +3,7 @@
\renewcommand\thesection*
\renewcommand\thesubsection*
\kerneldocCJKon
+ \kerneldocBeginKR
한국어 번역
===========
@@ -26,3 +27,4 @@
.. raw:: latex
\normalsize
+ \kerneldocEndKR
diff --git a/Documentation/translations/zh_CN/index.rst b/Documentation/translations/zh_CN/index.rst
index 1f953d3439a5..23c1e595ed78 100644
--- a/Documentation/translations/zh_CN/index.rst
+++ b/Documentation/translations/zh_CN/index.rst
@@ -5,6 +5,7 @@
\renewcommand\thesection*
\renewcommand\thesubsection*
\kerneldocCJKon
+ \kerneldocBeginSC
.. _linux_doc_zh:
@@ -184,3 +185,7 @@ TODOList:
----------
* :ref:`genindex`
+
+.. raw:: latex
+
+ \kerneldocEndSC
--
2.17.1
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