52d4189805
Now, `dsimp` fails if the goal did not change.
We can use the config object to obtain the previous behavior:
```
dsimp {fail_if_unchaged := ff}
```
See comment https://github.com/leanprover/lean/issues/1694#issuecomment-310956315
at issue #1694
4 lines
75 B
Text
4 lines
75 B
Text
example (n) : nat.pred n = n :=
|
|
begin
|
|
dsimp {fail_if_unchaged := ff}
|
|
end
|