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Re: Editing Java (with LSP)

From: Alessandro Bertulli
Subject: Re: Editing Java (with LSP)
Date: Mon, 13 Jun 2022 23:53:06 +0200
User-agent: mu4e 1.6.11; emacs 28.1

Filipp Gunbin <> writes:

> That seems to be true.  There're very few of us.

> I use my package javaimp (,
> it's limited in functionality, but it fits my needs.
> Current version knows about the project structure and dependencies (from
> Maven or Gradle), assists with completion in imports, and implements
> imenu better than cc-mode.  Next version is almost ready, it has
> improved parsing (for imenu and other stuff), limited xref support
> (finding a definition should work), navigation functions, and a minor
> mode to enable all that.

Uhm, interesting! I suppose it's a completely stand-alone package,
independent from LSP?

> Next, I plan to add support for debugging via gud (I already have the
> dependencies info), REPL via jshell (jdk 11), and perhaps implement
> indentation (this will remove dependency on cc-mode).  However, I don't
> know when I'll be able to complete all this.

I have experimented with GUD/RealGUD, but honestly it didn't click in to
me. I felt natural with gdb, but to me the GUD interface with other
debuggers is not as standard as it should be. Let me know if I am naive
here, but: if I can't use the same commands in every debugger, then
whats the point?

Do you feel good with GUD? Did you have to do any special configuration?

> I don't intend to work on good font-lock support, because I don't use it
> myself, and it would require full source parsing, which is better done
> with treesitter (there's ongoing work on treesitter integration into
> Emacs, hopefully we'll see it soon).  Also, clever source completion is
> also not in my plan: for that, you need a compiler, via lsp or directly.

Yap, I don't know treesitter but I suspect it may be an useful
integration also to solve this problem. Unfortunately, completion is one
of the thing that I find very useful (especially when exploring a new
codebase/library/framework, having type-checked completion is really
like having a guide, and it reduces basic, dumb errors)


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