Extend selection by expression

[unthingable]

Currently "Extend selection" functionality is rather naive (selects the whole function). Haskforce (and emacs) do it by selecting the outer expression, this is very useful when looking at expression types.

[rikvdkleij]

Good point. I will try to fix that in next beta.

[rikvdkleij]

Version 1.0.0.-beta3 supports "Extend selection"

[rikvdkleij]

Can you check if it works like you expect?

[unthingable]

Perfect, thanks!

[ice1000]

I think current "extend selection" is broken. It's trying to select the AST by hierarchy where intellij-haskell's AST is really a flat token sequence, even with a parenthesis.

[rikvdkleij]

Yes, expressions are flat because parser does not take layout into account. That's why we need to improver the parser.

But the current workaround solution works fine for me 😄

[ice1000]

What workaround? I didn't see one.

BTW it's not the problem of layout. If you have

f :: (<selection start>a -> b<selection end>) -> c

and you do extend selection, it'll become

f :: (<selection start>a -> b)<selection end> -> c

Which is terrible.

[rikvdkleij]

My use case is expressions and for that it works well.

[ice1000]

Could you please add parenthesis support for type declarations too?

[rikvdkleij]

Yes, can do that.

Btw, it is implemented in HaskellExtendWordSelectioner.