11017: Support "move if to guard" with an else branch r=Veykril a=weirane
Support the assist `move_arm_cond_to_match_guard` when there is an else branch.
I have two questions:
1. How to indent the first line of a match arm? `matcharm.indent()` doesn't seem to work. so I hard coded four spaces here:
95a0de85d5/crates/ide_assists/src/handlers/move_guard.rs (L162-L163)
2. I find a little issue in the original implementation, this code
```rust
let y = match 92 {
x => {
if x == 0 {$0
false
}
}
_ => true,
};
```
will be transformed to
```rust
let y = match 92 {
x if x == 0 => false
_ => true,
};
```
a comma is missing after the `false`. Should I also fix that? Or this can go in a separate PR.
Closes#10997.
Co-authored-by: Wang Ruochen <wrc@ruo-chen.wang>
4ec6bd6206