Tested each sample.

gem/test.lua

@@ -0,0 +1,46 @@
+function readfile(n)
+    local f = io.open(n, "rb")
+    local s = f:read("*a")
+    f:close()
+    return s
+end
+
+lf = readfile("t1lf.txt")
+os.remove("t1crlf.txt")
+os.execute("lua t1.lua < t1lf.txt > t1crlf.txt")
+crlf = readfile("t1crlf.txt")
+assert(crlf == string.gsub(lf, "\010", "\013\010"), "broken")
+
+gt = readfile("t2gt.qp")
+os.remove("t2.qp")
+os.execute("lua t2.lua < t2.txt > t2.qp")
+t2 = readfile("t2.qp")
+assert(gt == t2, "broken")
+
+os.remove("t1crlf.txt")
+os.execute("lua t3.lua < t1lf.txt > t1crlf.txt")
+crlf = readfile("t1crlf.txt")
+assert(crlf == string.gsub(lf, "\010", "\013\010"), "broken")
+
+t = readfile("test.lua")
+os.execute("lua t4.lua < test.lua > t")
+t2 = readfile("t")
+assert(t == t2, "broken")
+
+os.remove("output.b64")
+gt = readfile("gt.b64")
+os.execute("lua t5.lua")
+t5 = readfile("output.b64")
+assert(gt == t5, "failed")
+
+print("1 2 5 6 10 passed")
+print("2 3 4 5 6 10 passed")
+print("2 5 6 7 8 10 passed")
+print("5 9 passed")
+print("5 6 10 11 passed")
+
+os.remove("t")
+os.remove("t2.qp")
+os.remove("t1crlf.txt")
+os.remove("t11.b64")
+os.remove("output.b64")