Ocaml specific navigation commands

[andreas-roehler]

Suggest to introduce:

• tuareg-forward-top-level
• tuareg-backward-top-level
• tuareg-forward-block
• tuareg-backward-block
• tuareg-forward-linewise
• tuareg-backward-linewise

where cursor travels indents, resp. end of line

[mookid]

Actually, I guess that at least the two first commands can be extracted from PR #120 .

[Chris00]

The first two are provided by beginning-of-defun (with argument -1 and 1 respectively). For the remaining 4, please provide a description of what they are supposed to do.

[rgrinberg]

@Chris00 I wouldn't prioritize implementing such navigation commands in elisp by the way. These navigation commands are far simpler to implement correctly in merlin. Let's just ask @Khady or @andreypopp to confirm.

[andreypopp]

As far as I’m aware there’s no LSP methods for that kind of functionality. But yeah — I think we should provide extensions to LSP which makes implementing those features in editors simple.

[Chris00]

To indent the code or evaluate “phrases”, Tuareg should already somewhat understand the code structure. So maybe these commands are not hard to provide on top of this.

[Khady]

Merlin already has support for some of those navigation functions btw.

[Chris00]

@Khady Good to know. May you let us know what are the names of the functions? Are they bound to some keys?

[Khady]

https://github.com/ocaml/merlin/blob/master/doc/dev/PROTOCOL.md#phrase--target-nextprev--position-position

[Chris00]

Thanks. I indeed saw merlin-phrase-next and merlin-phrase-prev (bound to C-cC-n and C-cC-p). Do you know about other movements?