mm-hack-charsets

mm-hack-charsets is a variable defined in `mm-util.el'.
Its value is

(iso-8859-15 iso-2022-jp-2)

Documentation:
A list of special charsets.
Valid elements include:
`iso-8859-15' convert ISO-8859-1, -9 to ISO-8859-15 if ISO-8859-15 exists.
`iso-2022-jp-2' convert ISO-2022-jp to ISO-2022-jp-2 if ISO-2022-jp-2 exists.