woman-uncompressed-file-regexp

woman-uncompressed-file-regexp is a variable defined in `woman.el'.
Its value is

"\\.\\([0-9lmnt]\\w*\\)"

Documentation:
Do not change this unless you are sure you know what you are doing!
Regexp used to select man source files (ignoring any compression extension).

The SysV standard man pages use two character suffixes, and this is
becoming more common in the GNU world. For example, the man pages
in the ncurses package include `toe.1m', `form.3x', etc.

Note: an optional compression regexp will be appended, so this regexp
MUST NOT end with any kind of string terminator such as $ or \'.

You can customize this variable.