So far all I’ve done is
(use-package crystal-mode
:straight t)
Which is a pretty basic setup, but not too bad. Other Emacs users that have a more interesting setup? Any lsp server worth looking into?
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I don’t use an LSP, but here’s the relevant section in my .emacs. Using company to autocomplete stuff I’ve already typed is kind of nice at times.
(add-hook 'crystal-mode-hook
(lambda ()
(setq show-trailing-whitespace t)
(setq indent-tabs-mode nil)
;; disable unsupported features
;;(lsp-deferred)
(company-mode)
;;(setq lsp-prefer-flymake nil)
;;(setq lsp-ui-sideline-enable nil)
(setq company-tooltip-limit 20) ; bigger popup window
(setq company-idle-delay 0)
(setq company-tooltip-align-annotations t)
(setq company-echo-delay 0) ; remove annoying blinking
;; I use PascalCase since snake_case is very hard for my eyes to parse.
(subword-mode)
;; Remove any trailing whitespace from lines when the source file is saved
(add-hook 'local-write-file-hooks
'(lambda ()
(save-excursion
(goto-char (point-min))
(when (search-forward "\t" nil t)
(untabify (1- (point)) (point-max)))
(delete-trailing-whitespace))))))
I installed crystal-mode and crystal-playground from the package manager (M-x list-packages). The crystal-playground is different than the browser-based playground in that it’s a local Emacs buffer, and can save to a local file. Kinda nice since I don’t have to leave Emacs to do stuff like that ^_^
crystal-mode, unfortunately, has a bit of an issue with the abstract keyword, but it’s just a minor annoyance 
Following is my crystal-mode specified config.
To be honest, less config than my others mode, but still several of them quite useful.
- flycheck
- ameba
- though i enable LSP(crystalize), but it not so useful for now AFAIK, i even not so useful than tabnine
- apheleia is a very useful format tools, format process run asynchronously, i contribute code make it support crystal-mode. (format is a feature of lsp, but i disable it because i use apheleia)
In fact, i found there are many feature i never to tried for crystal-mode, maybe anyone can introduce some of best of them.
Using company to autocomplete stuff I’ve already typed is kind of nice at times.
I’ve been using company-dabbrev for years, used to be the only thing that could produce completions in PHP. While the language servers have caught up, I still have it as a fallback. Also, handy in text buffers.
crystal-playground
Oh, I should get that for quick experimentation.
crystal-mode, unfortunately, has a bit of an issue with the
abstractkeyword
Oh. I’m not that far that I’ve created any abstract stuff yet.
flycheck
Oh, yeah, flycheck all the things. Though lsp-mode messes a bit with it, which might come around to bite me: I add additional php checkers after the lsp checker, but the lsp checker works with different languages. I’ll probably have to deal with that.
tabnine
I tried that a while back, but was massively underwhelmed. Might have been my setup or lousy PHP code. But I’ve been using GitHub co-pilot for a bit, which isn’t that different.
crystalline
Oh, gotta get that. lsp-mode defaults to scry, which seems a bit dead, maybe we should make a PR to change it to crystalline?
apheleia
Well, I’m coding with myself so far, so strict formatting isn’t so high on my list. But from Radian, so worth checking out…
1 Like
crystal-mode, unfortunately, has a bit of an issue with the abstract keyword
You can’t mark a method with abstract prefix use (mark-sexp), C-M-SPC
Oh, gotta get that.
lsp-modedefaults to scry, which seems a bit dead, maybe we should make a PR to change it to crystalline?
Although, config is easy, set following variable BEFORE you require the lsp-mode, you need crystalline on the $PATH anyway.
(setq lsp-clients-crystal-executable '("crystalline" "--stdio"))
(require 'lsp-mode)
Added to my init.el. And I’ve tried getting Support crystalline for Crystal · Issue #4003 · emacs-lsp/lsp-mode · GitHub moving again.