mail module: garbled subject line

[eBrnd]

Example: "Re: [chaos-inkl] =?iso-8859-1?q?Gemeinn=FCtzigkeit?="

[paalsteek]

After some digging around:

The format is a MIME format called "quoted-printable" and can be encoded/decoded using the lua mime module.

local ltn12 = require("ltn12")
local mime = require("mime")

convert = mime.decode("quoted-printable")
print(convert("Gemeinn=FCtzigkeit"))

What's missing: Extract the encoded string from all that garbage and put the subject back together.

[eBrnd]

could be done by searching for matching =? and ?=