Changes in chapter09/locale.xml [4ecfc55:4f560248]

File:

• chapter09/locale.xml (modified) (7 diffs)

chapter09/locale.xml

@@ -1 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="ISO-8859-1"?>
 <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
@@ -6 +6 @@
 ]>
 
-<sect1 id="ch-config-locale">
+<sect1 id="ch-config-locale" revision="systemd">
   <?dbhtml filename="locale.html"?>
 
@@ -12 +12 @@
 
   <indexterm zone="ch-config-locale">
-    <primary sortas="e-/etc/profile">/etc/profile</primary>
+    <primary sortas="e-etc-locale-conf">/etc/locale.conf</primary>
   </indexterm>
 
-  <indexterm zone="ch-config-locale" revision='systemd'>
-    <primary sortas="e-/etc/profile">/etc/locale.conf</primary>
-  </indexterm>
-
-  <para>Some environment variables are necessary for native language
-  support. Setting them properly results in:</para>
+  <para>The <filename>/etc/locale.conf</filename> file below sets some
+  environment variables necessary for native language support. Setting
+  them properly results in:</para>
 
   <itemizedlist>
@@ -43 +40 @@
 
   <para>Replace <replaceable>&lt;ll&gt;</replaceable> below with the two-letter code
-  for your desired language (e.g., <literal>en</literal>) and
+  for your desired language (e.g., <quote>en</quote>) and
   <replaceable>&lt;CC&gt;</replaceable> with the two-letter code for the appropriate
-  country (e.g., <literal>GB</literal>). <replaceable>&lt;charmap&gt;</replaceable> should
+  country (e.g., <quote>GB</quote>). <replaceable>&lt;charmap&gt;</replaceable> should
   be replaced with the canonical charmap for your chosen locale. Optional
-  modifiers such as <literal>@euro</literal> may also be present.</para>
+  modifiers such as <quote>@euro</quote> may also be present.</para>
 
   <para>The list of all locales supported by Glibc can be obtained by running
@@ -54 +51 @@
 <screen role="nodump"><userinput>locale -a</userinput></screen>
 
-  <para>Charmaps can have a number of aliases, e.g.,
-  <literal>ISO-8859-1</literal> is also referred to as
-  <literal>iso8859-1</literal> and <literal>iso88591</literal>.
+  <para>Charmaps can have a number of aliases, e.g., <quote>ISO-8859-1</quote>
+  is also referred to as <quote>iso8859-1</quote> and <quote>iso88591</quote>.
   Some applications cannot handle the various synonyms correctly (e.g., require
-  that <literal>UTF-8</literal> is written as <literal>UTF-8</literal>, not
-  <literal>utf8</literal>), so it is the safest in most
+  that <quote>UTF-8</quote> is written as <quote>UTF-8</quote>, not
+  <quote>utf8</quote>), so it is the safest in most
   cases to choose the canonical name for a particular locale. To determine
   the canonical name, run the following command, where <replaceable>&lt;locale
   name&gt;</replaceable> is the output given by <command>locale -a</command> for
-  your preferred locale (<literal>en_GB.iso88591</literal> in our
-  example).</para>
+  your preferred locale (<quote>en_GB.iso88591</quote> in our example).</para>
 
 <screen role="nodump"><userinput>LC_ALL=<replaceable>&lt;locale name&gt;</replaceable> locale charmap</userinput></screen>
 
-  <para>For the <literal>en_GB.iso88591</literal> locale, the above command
+  <para>For the <quote>en_GB.iso88591</quote> locale, the above command
   will print:</para>
 
 <screen><computeroutput>ISO-8859-1</computeroutput></screen>
 
-  <para>This results in a final locale setting of <literal>en_GB.ISO-8859-1</literal>.
+  <para>This results in a final locale setting of <quote>en_GB.ISO-8859-1</quote>.
   It is important that the locale found using the heuristic above is tested prior
   to it being added to the Bash startup files:</para>
@@ -96 +91 @@
   Glibc.</para>
 
+  <!-- FIXME: the xlib example will become obsolete in the future.-->
+  <para>Some packages beyond LFS may also lack support for your chosen locale. One
+  example is the X library (part of the X Window System), which outputs the
+  following error message if the locale does not exactly match one of the character
+  map names in its internal files:</para>
+
+<screen><computeroutput>Warning: locale not supported by Xlib, locale set to C</computeroutput></screen>
+
+  <para>In several cases Xlib expects that the character map will be listed in
+  uppercase notation with canonical dashes. For instance, "ISO-8859-1" rather
+  than "iso88591". It is also  possible to find an appropriate specification by
+  removing the charmap part of the locale specification.  This can be checked
+  by running the <command>locale charmap</command> command in both locales.
+  For example, one would have to change "de_DE.ISO-8859-15@euro" to
+  "de_DE@euro" in order to get this locale recognized by Xlib.</para>
+
   <para>Other packages can also function incorrectly (but may not necessarily
   display any error messages) if the locale name does not meet their expectations.
@@ -101 +112 @@
   might provide some useful information.</para>
 
-  <para revision='systemd'>Once the proper locale settings have been
-  determined, create the <filename>/etc/locale.conf</filename> file:</para>
+  <para>Once the proper locale settings have been determined, create the
+  <filename>/etc/locale.conf</filename> file:</para>
 
-<screen revision='systemd'><userinput>cat &gt; /etc/locale.conf &lt;&lt; "EOF"
+<screen><userinput>cat &gt; /etc/locale.conf &lt;&lt; "EOF"
 <literal>LANG=<replaceable>&lt;ll&gt;_&lt;CC&gt;.&lt;charmap&gt;&lt;@modifiers&gt;</replaceable></literal>
 EOF</userinput></screen>
 
-  <para>The shell program <command>/bin/bash</command> (here after referred
-  as <quote>the shell</quote>) uses a collection of startup files to help
-  create the environment to run in. Each file has a specific use and may
-  affect login and interactive environments differently. The files in the
-  <filename class="directory">/etc</filename> directory provide global
-  settings.  If equivalent files exist in the home directory, they
-  may override the global settings.</para>
-
-  <para>An interactive login shell is started after a successful login,
-  using <command>/bin/login</command>, by reading the
-  <filename>/etc/passwd</filename> file.  An interactive non-login shell is
-  started at the command-line (e.g.
-  <prompt>[prompt]$</prompt><command>/bin/bash</command>).  A
-  non-interactive shell is usually present when a shell script is running.
-  It is non-interactive because it is processing a script and not waiting
-  for user input between commands.</para>
-
-  <para><phrase revision='systemd'>The login shells are often unaffected by
-  the settings in <filename>/etc/locale.conf</filename>. </phrase>Create the
-  <filename>/etc/profile</filename>
-  <phrase revision='sysv'>once the proper locale settings have been
-  determined to set the desired locale</phrase><phrase
-  revision='systemd'>to read the locale settings from
-  <filename>/etc/locale.conf</filename> and export them</phrase>,
-  but set the <literal>C.UTF-8</literal> locale instead if running in the Linux
-  console (to prevent programs from outputting characters that the Linux
-  console is unable to render):</para>
-
-<screen revision="systemd"><userinput>cat &gt; /etc/profile &lt;&lt; "EOF"
-<literal># Begin /etc/profile
-
-for i in $(locale); do
-  unset ${i%=*}
-done
-
-if [[ "$TERM" = linux ]]; then
-  export LANG=C.UTF-8
-else
-  source /etc/locale.conf
-
-  for i in $(locale); do
-    key=${i%=*}
-    if [[ -v $key ]]; then
-      export $key
-    fi
-  done
-fi
-
-# End /etc/profile</literal>
-EOF</userinput></screen>
-
-<screen revision="sysv"><userinput>cat &gt; /etc/profile &lt;&lt; "EOF"
-<literal># Begin /etc/profile
-
-for i in $(locale); do
-  unset ${i%=*}
-done
-
-if [[ "$TERM" = linux ]]; then
-  export LANG=C.UTF-8
-else
-  export LANG=<replaceable>&lt;ll&gt;_&lt;CC&gt;.&lt;charmap&gt;&lt;@modifiers&gt;</replaceable>
-fi
-
-# End /etc/profile</literal>
-EOF</userinput></screen>
-
-  <para revision='systemd'>Note that you can modify <filename>/etc/locale.conf</filename> with the
+  <para>Note that you can modify <filename>/etc/locale.conf</filename> with the
   systemd <command>localectl</command> utility. To use
   <command>localectl</command> for the example above, run:</para>
 
-<screen revision='systemd' role="nodump"><userinput>localectl set-locale LANG="<replaceable>&lt;ll&gt;_&lt;CC&gt;.&lt;charmap&gt;&lt;@modifiers&gt;</replaceable>"</userinput></screen>
+<screen role="nodump"><userinput>localectl set-locale LANG="<replaceable>&lt;ll&gt;_&lt;CC&gt;.&lt;charmap&gt;&lt;@modifiers&gt;</replaceable>"</userinput></screen>
 
-  <para revision='systemd'>You can also specify other language specific
-  environment variables such as <envar>LANG</envar>,
-  <envar>LC_CTYPE</envar>, <envar>LC_NUMERIC</envar> or any other
-  environment variable from <command>locale</command> output. Just separate
-  them with a space. An example where <envar>LANG</envar> is set as
+  <para>You can also specify other language specific environment variables such
+  as <envar>LANG</envar>, <envar>LC_CTYPE</envar>, <envar>LC_NUMERIC</envar> or
+  any other environment variable from <command>locale</command> output. Just
+  separate them with a space. An example where <envar>LANG</envar> is set as
   en_US.UTF-8 but <envar>LC_CTYPE</envar> is set as just en_US is:</para>
 
-<screen revision='systemd' role="nodump"><userinput>localectl set-locale LANG="en_US.UTF-8" LC_CTYPE="en_US"</userinput></screen>
+<screen role="nodump"><userinput>localectl set-locale LANG="en_US.UTF-8" LC_CTYPE="en_US"</userinput></screen>
 
-  <note revision='systemd'><para>Please note that the
-  <command>localectl</command> command doesn't work in the chroot
-  environment.  It can only be used after the LFS system is booted with
-  systemd.</para></note>
+  <note><para>Please note that the <command>localectl</command> command
+  doesn't work in the chroot environment.  It can only
+  be used after the LFS system is booted with systemd.</para></note>
 
-  <para>The <literal>C</literal> (default) and <literal>en_US</literal>
-  (the recommended one for United States English users) locales are
-  different. <literal>C</literal>
+  <para>The <quote>C</quote> (default) and <quote>en_US</quote> (the recommended
+  one for United States English users) locales are different. <quote>C</quote>
   uses the US-ASCII 7-bit character set, and treats bytes with the high bit set
   as invalid characters. That's why, e.g., the <command>ls</command> command
   substitutes them with question marks in that locale. Also, an attempt to send
   mail with such characters from Mutt or Pine results in non-RFC-conforming
-  messages being sent (the charset in the outgoing mail is indicated as
-  <computeroutput>unknown 8-bit</computeroutput>). It's suggested that you
-  use the <literal>C</literal> locale only
+  messages being sent (the charset in the outgoing mail is indicated as <quote>unknown
+  8-bit</quote>). It's suggested that you use the <quote>C</quote> locale only
   if you are certain that you will never need 8-bit characters.</para>
 
+<!--
+  <para>UTF-8 based locales are not supported well by many programs.
+  Work is in progress to document and, if possible, fix such problems, see
+  <ulink url="&blfs-book;introduction/locale-issues.html"/>.</para>
+-->
+
 </sect1>