bug#36432: 26.2; SMIE does not request forward tokens when point is at point-max

[Sam Halliday <sam.halliday@gmail.com>]

I'm seeing this when doing indentation.

e.g. in https://gitlab.com/tseenshe/haskell-tng.el/blob/tng/test/src/indentation.hs
move the point to the end of the last line and do a
`newline-and-indent'. The do it again when you have two newlines after
that last point. The results are different.

BTW, in addition to the edebug support you've added, I also have

(bind-key "C-M-<return>" 'haskell-tng-smie:debug-newline haskell-tng-mode-map)
(bind-key "C-M-<tab>" 'haskell-tng-smie:debug-tab haskell-tng-mode-map)

that are useful for seeing what's going on, with some haskell-tng
specific things.

On 29/06/2019, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
>> SMIE (via a `indent-for-tab-command') does not request forward tokens
>> from the lexer when point is at `point-max'.
>
> After looking at the smie.el code I think this bug report is not
> sufficiently detailed: it definitely sometimes does, and I don't see any
> obvious place where it doesn't.  Can you clarify if it happens during
> something like smie-forward-sexp or rather within the smie-indent*
> code itself.
>
> Or do you mean when you trigger indent-according-to-mode with point at EOB?
>
>
>         Stefan
>
>