Fsharp apostrophes in names

[NobbZ]

The following code example:

let foo' = failWith "foo"

let bar' = failWith "bar"

The ' are treated as string delimeters instead of as part of the name.

[NobbZ]

On exercism/exercism#3831 there is a screenshot of a bigger chunk of code which suffers from the same problem.

[mAAdhaTTah]

F# allows apostrophes in the variable name?! Weird...

[NobbZ]

Thats pretty common in functional languages.

Also I haven't even checked so far, what would happen when one uses typevariables in a function.

They are preceeded with an apostrophe, and highlighted as a string as well, check this example which could be a stub for a function that maps a function over a list:

let map (f: 'a -> 'b) (xs: 'a list): 'b list = failWith "not implemented"

In this example we get 2 strings highlichted: 'a -> ' and 'a list): '.