From e909a1ebdf37d817f53707c5a998a6786d5af1cd Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111@xry111.site>
Date: Wed, 22 Jun 2022 15:12:06 +0800
Subject: bc: enable readline

Using readline can improve line editing feature of bc, but it's not
enabled by default.

As readline is already installed before bc, let's pick up this
improvement with no cost.
---
 chapter08/bc.xml | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

(limited to 'chapter08')

diff --git a/chapter08/bc.xml b/chapter08/bc.xml
index 9678ddd54..4493f8219 100644
--- a/chapter08/bc.xml
+++ b/chapter08/bc.xml
@@ -43,7 +43,7 @@
 
     <para>Prepare Bc for compilation:</para>
 
-<screen><userinput remap="configure">CC=gcc ./configure --prefix=/usr -G -O3</userinput></screen>
+<screen><userinput remap="configure">CC=gcc ./configure --prefix=/usr -G -O3 -r</userinput></screen>
 
     <variablelist>
       <title>The meaning of the configure options:</title>
@@ -55,6 +55,14 @@
         </listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><parameter>-G</parameter></term>
+        <listitem>
+          <para>Omit parts of the test suite that won't work
+          without a GNU bc present.</para>
+        </listitem>
+      </varlistentry>
+
       <varlistentry>
         <term><parameter>-O3</parameter></term>
         <listitem>
@@ -63,10 +71,10 @@
       </varlistentry>
 
       <varlistentry>
-        <term><parameter>-G</parameter></term>
+        <term><parameter>-r</parameter></term>
         <listitem>
-          <para>Omit  parts of the test suite that won't work
-          without a GNU bc present.</para>
+          <para>Enable the use of <application>Readline</application> to
+          improve the line editing feature of bc.</para>
         </listitem>
       </varlistentry>
     </variablelist>
-- 
cgit v1.2.3-54-g00ecf