Mutt: reinstate the commands which ensure doc/manual.txt is not empty.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@19876 af4574ff-66df-0310-9fd7-8a98e5e911e0

introduction/welcome/changelog.xml

@@ -44,6 +44,10 @@
     <listitem>
       <para>February 25th, 2018</para>
       <itemizedlist>
+        <listitem>
+          <para>[ken] - In mutt, reinstate the commands to preserve
+          manual.txt.</para>
+        </listitem>
         <listitem>
           <para>[bdubbs] - Update to epiphany-3.26.6. Fixes
           <ulink url="&blfs-ticket-root;10386">#10386</ulink>.</para>

networking/mailnews/mutt.xml

@@ -132,7 +132,8 @@
     <para>Install <application>Mutt</application> by running the following
     commands:</para>
 
-<screen><userinput>./configure --prefix=/usr                           \
+<screen><userinput>cp -v doc/manual.txt{,.shipped} &amp;&amp;
+./configure --prefix=/usr                           \
             --sysconfdir=/etc                       \
             --with-docdir=/usr/share/doc/mutt-&mutt-version; \
             --enable-external-dotlock               \
@@ -140,7 +141,8 @@
             --enable-imap                           \
             --enable-hcache                         \
             --enable-sidebar                        &amp;&amp;
-make</userinput></screen>
+make &amp;&amp;
+test -s doc/manual.txt || mv -v doc/manual.txt{.shipped,}</userinput></screen>
 
     <para>To generate the PDF manual with <xref linkend="texlive"/>, run
     the following command:</para>