1 files changed, 5 insertions, 0 deletions

diff --git a/gem/ex4.lua b/gem/ex4.lua
new file mode 100644
index 0000000..c670e0e
--- /dev/null
+++ b/gem/ex4.lua
@@ -0,0 +1,5 @@
+local qp = filter.chain(normalize(CRLF), encode("quoted-printable"), 
+  wrap("quoted-printable"))
+local input = source.chain(source.file(io.stdin), qp)
+local output = sink.file(io.stdout)
+pump.all(input, output)