completion--embedded-envvar-re

completion--embedded-envvar-re is a variable defined in `minibuffer.el'.
Its value is

"\\(?:^\\|[^$]\\(?:\\$\\$\\)*\\)$\\([[:alnum:]_]*\\|{\\([^}]*\\)\\)\\'"

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

Documentation:
Not documented as a variable.