Add 'xo-indentlog/' from commit 'd43c4af0b4'

git-subtree-dir: xo-indentlog
git-subtree-mainline: 1c3f033933
git-subtree-split: d43c4af0b4

xo-indentlog/example/ex1/ex1.cpp

@@ -0,0 +1,22 @@
+/* ex1.cpp */
+
+#include "xo/indentlog/scope.hpp"
+
+using namespace xo;
+
+void inner(int x) {
+    scope log(XO_ENTER0(always), ":x ", x);
+}
+
+void outer(int y) {
+    scope log(XO_ENTER0(always), ":y ", y);
+
+    inner(2*y);
+}
+
+int
+main(int argc, char ** argv) {
+    outer(123);
+}
+
+/* end ex1.cpp */