* Use canonical charmaps in /etc/profile and don't set LC_ALL

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@4984 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter01/changelog.xml

@@ -83,6 +83,9 @@ first a summary, then a detailed log.</para>
 </itemizedlist>
 </listitem>
 
+<listitem><para>April 17, 2005 [matt]: Use canonical charmaps in /etc/profile
+and don't set LC_ALL (Ken Moffat and Alexander Patrakov)</para></listitem>
+
 <listitem><para>April 16, 2005 [matt]: Reword handling of hotpluggable devices
 now that we install the hotplug package (Andrew Benton)</para></listitem>
 

chapter07/profile.xml

@@ -60,27 +60,40 @@ environment variable that makes <application>Bash</application> and
 <para>Replace <replaceable>[ll]</replaceable> below with the
 two-letter code for the desired language (e.g., <quote>en</quote>) and
 <replaceable>[CC]</replaceable> with the two-letter code for the
-appropriate country (e.g., <quote>GB</quote>). It may also be
-necessary to specify (and this is actually the preferred form) the
-character encoding (e.g.  <quote>iso8859-1</quote>) after a dot (so
-that the result is <quote>en_GB.iso8859-1</quote>).  Issue the
-following command for more information:</para>
-
-<screen><userinput>man 3 setlocale</userinput></screen>
+appropriate country (e.g., <quote>GB</quote>).
+<replaceable>[charmap]</replaceable> should be replaced with the
+canonical charmap for your chosen locale.</para>
 
 <para>The list of all locales supported by Glibc can be obtained by running
 the following command:</para>
 
 <screen><userinput>locale -a</userinput></screen>
 
+<para>Locales can have a number of synonyms, 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, so it is safest
+to choose the canonical name for a particular locale.  To determine the
+canonical name, run the following command, where
+<replaceable>[locale name]</replaceable> is the output given by
+<command>locale -a</command> for your preferred locale
+(<quote>en_GB.iso88591</quote> in our example).</para>
+
+<screen><userinput>LC_ALL=<replaceable>[locale name]</replaceable> locale charmap</userinput></screen>
+
+<para>For the <quote>en_GB.iso88591</quote> locale, the above command
+will print:</para>
+
+<screen>ISO-8859-1</screen>
+
+<para>This results in in a final locale setting of <quote>en_GB.ISO-8859-1</quote>.</para>
+
 <para>Once the proper locale settings have been determined, create the
 <filename>/etc/profile</filename> file:</para>
 
 <screen><userinput>cat &gt; /etc/profile &lt;&lt; "EOF"
 <literal># Begin /etc/profile
 
-export LC_ALL=<replaceable>[ll]</replaceable>_<replaceable>[CC]</replaceable>
-export LANG=<replaceable>[ll]</replaceable>_<replaceable>[CC]</replaceable>
+export LANG=<replaceable>[ll]</replaceable>_<replaceable>[CC]</replaceable>.<replaceable>[charmap]</replaceable>
 export INPUTRC=/etc/inputrc
 
 # End /etc/profile</literal>