1 files changed, 12 insertions, 0 deletions
diff --git a/Codec/MIME/QuotedPrintable.hs b/Codec/MIME/QuotedPrintable.hs
new file mode 100644
index 0000000..514ce4e
--- /dev/null
+++ b/Codec/MIME/QuotedPrintable.hs
@@ -0,0 +1,12 @@
+module MIME.QuotedPrintable where
+
+import Data.Char
+
+decode :: String -> String
+decode "" = ""
+decode ('=':x1:x2:xs)
+ | isHexDigit x1 && isHexDigit x2 =
+    chr (digitToInt x1 * 16 + digitToInt x2) : decode xs
+decode ('=':xs) = '=':decode xs
+              -- make it explicit that we propagate other '=' occurrences.
+decode (x1:xs) = x1:decode xs