x/tools/gopls: option to autocomplete function call without parentheses

[HymanZHAN]

(This is more of a question before it becomes a feature request. However, the original Slack invite link is no longer active.)

Is your feature request related to a problem? Please describe.
Is it possible to leave out the parentheses of a method when doing autocompletion? For example, when typing time.No and hit tab, instead of autocompleting with time.Now() is it possible to complete it as time.Now?

Describe the solution you'd like
Have an option for this, something like gopls.includeParenthesesWhenAutocomplete that can be set to false.

Describe alternatives you've considered
N/A

Additional context
I have been writing a mix of C++, Python, and JS/TS, and all these languages' autocompletion on VS Code are without the parentheses. It's muscle memory for me now to reach for ( after completing the method and it's really counter-productive especially when I need to switch between languages.

[hyangah]

@HymanZHAN thanks for the feature request. This is about adding a new knob for gopls' autocompletion behavior, so I will transfer this to its issue tracker. (cc @stamblerre )

[HymanZHAN]

@hyangah Thanks!

[muirdm]

If you disable snippets in your editor then you won't get the parens anymore (but will lose other snippet dependent functionality).

Why don't the other languages include parens when completing function calls? I can appreciate not being used to it, but it objectively saves keystrokes.

[HymanZHAN]

@muirdm My personal experience actually speaks otherwise. Including parens (and the input inside parens) as snippets does save the keystroke of (. But inside the snippet, you don't have automatic IntelliSense anymore; You have to manually trigger it by Ctrl+Space or you will need to type a lot more. I'd argue it objectively increases keystrokes. This is quite annoying when you have functions with multiple parameters.

Also, it's way easier to mishit Tab and exit the snippet accidentally in the middle of typing, as I tend to hit Tab for autocompletion (even though it's not there). I also use an extension called TabOut, which lets you skip closing characters like " and ). (Old habits from using Visual Studio, without which I will be 10X less productive. 😅) Obviously, using this inside a snippet will exit the snippet first, which is really annoys me.

BTW, my favorite snippet implementation is actually the one of Visual Studio, where you can use Tab to loop through all snippet input space holders, modify previous input, have automatically autocompletion and use Enter to finish the snippet. Sadly that's not how VS Code implements it.😥

[muirdm]

inside the snippet, you don't have automatic IntelliSense anymore

I have my editor set up where I do get automatic completions inside the snippet. After inserting a snippet, it automatically triggers a completion at the first placeholder. I can accept it right away (and overwrite the placeholder), or simply start typing to filter completions. I press TAB to choose the inner completion, then TAB again to advance to the next outer placeholder.

I definitely agree that nested completion/snippets is finicky, but I think most of that is just editors not doing it well by default.