[commit: ghc] master: Documentation: add section on .haskeline file (#2531) (b5a2e87)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/b5a2e8763fcf0e2b4c57e12f2b2e5817e5ce9df0/ghc

>---------------------------------------------------------------

commit b5a2e8763fcf0e2b4c57e12f2b2e5817e5ce9df0
Author: Thomas Miedema <thomasmiedema at gmail.com>
Date:   Sun Jun 21 20:56:56 2015 +0200

    Documentation: add section on .haskeline file (#2531)


>---------------------------------------------------------------

b5a2e8763fcf0e2b4c57e12f2b2e5817e5ce9df0
 docs/users_guide/ghci.xml | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/docs/users_guide/ghci.xml b/docs/users_guide/ghci.xml
index 627aa79..d3b65ef 100644
--- a/docs/users_guide/ghci.xml
+++ b/docs/users_guide/ghci.xml
@@ -3380,7 +3380,11 @@ Then the interactive options are modified as follows:
   </sect1>
 
   <sect1 id="ghci-dot-files">
-    <title>The <filename>.ghci</filename> file</title>
+  <title>The <filename>.ghci</filename> and <filename>.haskeline</filename> files</title>
+
+    <sect2 id="dot-ghci-files">
+    <title>The <filename>.ghci</filename> files</title>
+
     <indexterm><primary><filename>.ghci</filename></primary><secondary>file</secondary>
     </indexterm>
     <indexterm><primary>startup</primary><secondary>files, GHCi</secondary>
@@ -3536,6 +3540,21 @@ Then the interactive options are modified as follows:
         </listitem>
       </orderedlist>
     </para>
+    </sect2>
+
+    <sect2 id="dot-haskeline-file">
+      <title>The <filename>.haskeline</filename> file</title>
+
+      <indexterm><primary><filename>.haskeline</filename></primary><secondary>file</secondary>
+      </indexterm>
+      <indexterm><primary>startup</primary><secondary>files, GHCi</secondary>
+      </indexterm>
+
+      GHCi uses <ulink url="https://hackage.haskell.org/package/haskeline">Haskeline</ulink>
+      under the hood. You can configure it to, among other things, prune
+      duplicates from ghci history. See:
+      <ulink url="http://trac.haskell.org/haskeline/wiki/UserPrefs">Haskeline user preferences</ulink>.
+    </sect2>
   </sect1>
 
   <sect1 id="ghci-obj">