ignore_constant_varstruct : bool ref

- SYNOPSIS
- Interpret a simple varstruct as a variable, even if there is a constant of that name.
- DESCRIPTION
- As well as conventional abstractions `\x. t` where x is a variable, HOL Light permits generalized abstractions where the varstruct is a more complex term, e.g. `\(x,y). x + y`. This includes the degenerate case of just a constant. However, one may want a regular abstraction whose bound variable happens to be in use as a constant. When parsing a quotation "\c. t" where c is the name of a constant, HOL Light interprets it as a simple abstraction with a variable c when the flag ignore_constant_varstruct is true, as it is by default. It will interpret it as a degenerate generalized abstraction, only useful when applied to the constant c, if the flag is false.
- FAILURE CONDITIONS
- Not applicable.
- SEE ALSO
- GEN_BETA_CONV, is_abs, is_gabs.