From bffe85ae4c01f126c47ab7ea7b220b91d7c65dac Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 20 Jul 2017 08:52:55 +0200
Subject: Make slightly more interesting

---
 libhello/libhello/buildfile    |  2 +-
 libhello/libhello/hello.cxx    |  2 +-
 libhello/libhello/hello.hxx    | 13 +++++++------
 libhello/tests/test/driver.cxx |  5 ++++-
 libhello/tests/test/test.out   |  2 ++
 5 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/libhello/libhello/buildfile b/libhello/libhello/buildfile
index e65edde..0f84ca6 100644
--- a/libhello/libhello/buildfile
+++ b/libhello/libhello/buildfile
@@ -23,4 +23,4 @@ lib{hello}: cxx.export.libs = $int_libs
 
 # Install into the libhello/ subdirectory of, say, /usr/include/.
 #
-install.include = $install.include/libhello/
+install.include = $install.include/$project/
diff --git a/libhello/libhello/hello.cxx b/libhello/libhello/hello.cxx
index f7e3b7f..ee5c555 100644
--- a/libhello/libhello/hello.cxx
+++ b/libhello/libhello/hello.cxx
@@ -11,6 +11,6 @@ namespace hello
   void
   say_formatted (const string& m)
   {
-    print (m);
+    print::to_stdout (m);
   }
 }
diff --git a/libhello/libhello/hello.hxx b/libhello/libhello/hello.hxx
index ccc43c2..d9e41d9 100644
--- a/libhello/libhello/hello.hxx
+++ b/libhello/libhello/hello.hxx
@@ -11,18 +11,19 @@
 namespace hello
 {
   // If you compare this interface to version 1.0, then you will notice that
-  // while it is API/source-compatible (the signature of say() is unchanged)
-  // it is not ABI/binary-compatible (say() is now inline).
+  // while it is API/source-compatible (the call via the old signature of
+  // say() is still valid) it is not ABI/binary-compatible (say() now has an
+  // extra argument and is inline).
   //
-  // Notice also that inline say() calls format() which means libformat is an
-  // interface dependency of libhello.
+  // Notice also that inline say() now uses a type and calls a function from
+  // format which means libformat is an "interface dependency" of libhello.
 
   LIBHELLO_EXPORT void
   say_formatted (const std::string& message);
 
   inline void
-  say (const std::string& name)
+  say (const std::string& name, format::volume v = format::volume::normal)
   {
-    say_formatted (format ("Hello", name));
+    say_formatted (format::message ("Hello", name, v));
   }
 }
diff --git a/libhello/tests/test/driver.cxx b/libhello/tests/test/driver.cxx
index 38937f0..1c08bca 100644
--- a/libhello/tests/test/driver.cxx
+++ b/libhello/tests/test/driver.cxx
@@ -1,11 +1,14 @@
 // file: tests/test/driver.cxx -*- C++ -*-
 
 #include <libhello/hello.hxx>
+#include <libformat/format.hxx> // volume
 
 int
 main ()
 {
-  using hello::say;
+  using namespace hello;
 
   say ("World");
+  say ("World", format::volume::loud);
+  say_formatted ("Hi, World!");
 }
diff --git a/libhello/tests/test/test.out b/libhello/tests/test/test.out
index 8ab686e..a9ec19f 100644
--- a/libhello/tests/test/test.out
+++ b/libhello/tests/test/test.out
@@ -1 +1,3 @@
 Hello, World!
+HELLO, World!
+Hi, World!
-- 
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