undo-equiv-table

undo-equiv-table is a variable defined in `simple.el'.
Its value is

#s(hash-table size 65 test eq weakness key-and-value rehash-size 1.5 rehash-threshold 0.8 data
	      ())

• This variable may be risky if used as a file-local variable.

Documentation:
Table mapping redo records to the corresponding undo one.
A redo record for undo-in-region maps to t.
A redo record for ordinary undo maps to the following (earlier) undo.