Function glsp::try_call

pub fn try_call<R, A>(
    is_verbose: bool, 
    receiver: &R, 
    args: A
) -> Result<Val, GError> where
    R: CallableOps,
    A: IntoCallArgs, 

Calls a function with either verbose or brief error-reporting.

try and try-verbose work by invoking glsp::try_call.

When the program begins, the default error-reporting style is verbose.