Update ref/dropdb.sgml-200604

chegong18 · chegong18 · commit b8d1b61a3413 · 2020-06-05T00:02:32.000+08:00
——row428至445，增加英文和中文内容为：
   &lt;varlistentry&gt;
&lt;!--==========================orignal english content==========================
    &lt;term&gt;&lt;envar&gt;PG_COLOR&lt;/envar&gt;&lt;/term&gt;
____________________________________________________________________________--&gt;
    &lt;term&gt;&lt;envar&gt;PG_COLOR&lt;/envar&gt;&lt;/term&gt;
    &lt;listitem&gt;
&lt;!--==========================orignal english content==========================
     &lt;para&gt;
      Specifies whether to use color in diagnostics messages.  Possible values
      are &lt;literal&gt;always&lt;/literal&gt;, &lt;literal&gt;auto&lt;/literal&gt;,
      &lt;literal&gt;never&lt;/literal&gt;.
     &lt;/para&gt;
____________________________________________________________________________--&gt;
     &lt;para&gt;
      规定在诊断消息中是否使用颜色。可能的值为&lt;literal&gt;always&lt;/literal&gt;、 &lt;literal&gt;auto&lt;/literal&gt;和&lt;literal&gt;never&lt;/literal&gt;。
     &lt;/para&gt;
    &lt;/listitem&gt;
   &lt;/varlistentry&gt;
diff --git a/postgresql/doc/src/sgml/ref/dropdb.sgml b/postgresql/doc/src/sgml/ref/dropdb.sgml
@@ -424,6 +424,26 @@ ____________________________________________________________________________-->
      </para>
     </listitem>
    </varlistentry>
+
+   <varlistentry>
+<!--==========================orignal english content==========================
+    <term><envar>PG_COLOR</envar></term>
+____________________________________________________________________________-->
+    <term><envar>PG_COLOR</envar></term>
+    <listitem>
+<!--==========================orignal english content==========================
+     <para>
+      Specifies whether to use color in diagnostics messages.  Possible values
+      are <literal>always</literal>, <literal>auto</literal>,
+      <literal>never</literal>.
+     </para>
+____________________________________________________________________________-->
+     <para>
+      规定在诊断消息中是否使用颜色。可能的值为<literal>always</literal>、 <literal>auto</literal>和<literal>never</literal>。
+     </para>
+    </listitem>
+   </varlistentry>
+
   </variablelist>
 
 <!--==========================orignal english content==========================
