autocomplete very slows, keeps setting the mark

[brabalan]

When I try to autocomplete, it takes several seconds between the moment I choose a completion and the moment it is inserted. During that time, the minibuffer keeps flashing with messages. Here is what they are:

point: 373 start! 373
Mark set [2 times]
point: 387 start! 373
Mark set [2 times]
point: 396 start! 396
Mark set [2 times]
point: 395 start! 395
Mark set [2 times]
point: 394 start! 394
Mark set [2 times]
point: 393 start! 393
Mark set [2 times]
point: 392 start! 392
Mark set [2 times]
point: 391 start! 391
Mark set [2 times]
point: 390 start! 390
Mark set [2 times]
point: 389 start! 389
Mark set [2 times]
point: 388 start! 388
Mark set [4 times]

I'm using the opam installed version of Merlin.

[trefis]

I'm guessing you're using emacs?

[brabalan]

Oops, yes, sorry.

[asmanur]

Could you be a little more specific ? I have a little delay when trying to complete after "Batteries.", is this kind of completion you are talking about, or it is slow even when there is few matches ?

[brabalan]

It happens even with very few choices. For instance, typing "str", I immediately have 5 choices, but it's when I select the choice that the delay happens.

I also see some delay when I'm using "backspace" on such lines, or when I edit the "locked" zone. I suspect merlin keeps trying to compile what I write, and this interacts badly with completion. I don't know how to tell merlin to stop trying to find the types of things, to see if this is the culprit.

If it matters, I'm on OS X, with a Cocoa emacs 24.2.1, built with homebrew. I installed merlin yesterday with opam.

[asmanur]

It happens even with very few choices. For instance, typing "str", I immediately have 5 choices, but it's when I select the choice that the delay happens.

I also see some delay when I'm using "backspace" on such lines, or when I edit the "locked" zone. I suspect merlin keeps trying to compile what I write, and this interacts badly with completion. I don't know how to tell merlin to stop trying to find the types of things, to see if this is the culprit.

If it matters, I'm on OS X, with a Cocoa emacs 24.2.1, built with homebrew. I installed merlin yesterday with opam.

---

Reply to this email directly or view it on GitHub:
#16 (comment)

You could try (setq merlin-idle-delay 0.). By the way are you up to
date with master, completion has been slightly changed yesterday.

[let-def]

Ok, I tried Merlin with vim and aquamacs on a Mac OS X Mountain Lion.

Vim integration with Merlin was completely transparent, going like a breeze.
Aquamacs was almost unusable, with severe slowdown during completion or idle-typing.

This seem related to OcamlPro/typerex#2 .

[brabalan]

You could try (setq merlin-idle-delay 0.).

I did, but it did not change anything.

By the way are you up to
date with master, completion has been slightly changed yesterday.

I use the opam version. Does it directly come from git, or is it a released version? Is there a way to update to master using opam?

[asmanur]

You could try (setq merlin-idle-delay 0.).

I did, but it did not change anything.

By the way are you up to
date with master, completion has been slightly changed yesterday.

I use the opam version. Does it directly come from git, or is it a released version? Is there a way to update to master using opam?

opam install merlin should do.

[brabalan]

I updated the version and it's even slower.

[brabalan]

OK, so it seems that the issue is that merlin tries to find the type as it does the completion. What would be helpful is a way to avoid merlin to automatically find the types (so I would need to manually do a C-c C-ret to make the locked zone grow).

[asmanur]

Alan Schmitt notifications@github.com writes:

OK, so it seems that the issue is that merlin tries to find the type as it does the completion. What would be helpful is a way to avoid merlin to automatically find the types (so I would need to manually do a C-c C-ret to make the locked zone grow).

Thanks for the report. I disabled the idle checking during completion
(or at least I believe I have). Could you try again ? Besides I disabled
the synchronization during automatic completion so that no other merlin
commands are run during completion. If you want to synchronize the
buffer and complete, you can now use the new shortcut C-c TAB (which
overrides tuareg).

[brabalan]

It seems to be much better. I'll keep stressing it and will reopen if I notice something wrong. Thanks a lot!

[brabalan]

I tried another version of emacs for OS X, and merlin is much faster on it (as well as flyspell, which used to be very slow as well). So this may be another way to solve this.

Here it is: https://github.com/railwaycat/emacs-mac-port