Add a warning for tabs in source files

[ghc-hetmet.git] / docs / users_guide / using.xml

diff --git a/docs/users_guide/using.xml b/docs/users_guide/using.xml
index 0168123..c09fa35 100644 (file)
--- a/docs/users_guide/using.xml
+++ b/docs/users_guide/using.xml
@@ -1097,6 +1097,18 @@ f "2"    = 2
       </varlistentry>
 
       <varlistentry>
+       <term><option>-fwarn-tabs</option>:</term>
+       <listitem>
+         <indexterm><primary><option>-fwarn-tabs</option></primary></indexterm>
+         <indexterm><primary>tabs, warning</primary></indexterm>
+         <para>Have the compiler warn if there are tabs in your source
+          file.</para>
+
+         <para>This warning is off by default.</para>
+       </listitem>
+      </varlistentry>
+
+      <varlistentry>
        <term><option>-fwarn-type-defaults</option>:</term>
        <listitem>
          <indexterm><primary><option>-fwarn-type-defaults</option></primary></indexterm>