- Coding system aliases (doc strings follow):

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
DEFUN ("define-coding-system-alias", Fdefine_coding_system_alias, 2, 2, 0, /*
Define symbol ALIAS as an alias for coding system ALIASEE.

You can use this function to redefine an alias that has already been defined,
but you cannot redefine a name which is the canonical name for a coding system.
\(a canonical name of a coding system is what is returned when you call
`coding-system-name' on a coding system).

ALIASEE itself can be an alias, which allows you to define nested aliases.

You are forbidden, however, from creating alias loops or `dangling' aliases.
These will be detected, and an error will be signaled if you attempt to do so.

If ALIASEE is nil, then ALIAS will simply be undefined.

See also `coding-system-alias-p', `coding-system-aliasee',
and `coding-system-canonical-name-p'.
*/
       (alias, aliasee))

DEFUN ("coding-system-canonical-name-p", Fcoding_system_canonical_name_p, 1, 1, 0, /*
Return t if OBJECT names a coding system, and is not a coding system alias.
*/
       (object))

DEFUN ("coding-system-alias-p", Fcoding_system_alias_p, 1, 1, 0, /*
Return t if OBJECT is a coding system alias.
All coding system aliases are created by `define-coding-system-alias'.
*/
       (object))

DEFUN ("coding-system-aliasee", Fcoding_system_aliasee, 1, 1, 0, /*
Return the coding-system symbol for which symbol ALIAS is an alias.
*/
       (alias))