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Make the track-state middleware invokeable directly #799

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merged 2 commits into from
Aug 9, 2023
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@vemv vemv commented Aug 7, 2023

Related: clojure-emacs/cider#3393

There's a good chance that this is necessary, given thheller/shadow-cljs#1138

Even if not, I found an independently good use case for it:

  • Assume I nano src/conduit/events.cljs and hit save
    • CIDER over Emacs has no way of knowing of this save - no nrepl message was triggered for our connections
  • Then, in the CIDER repl output, I will see [:app] Build completed. (263 files, 2 compiled, 0 warnings, 0.18s) over stderr
    • So, I can inspect stderr within a nrepl-make-response-handler call, grep for such a string, and conditionally nrepl-send-request '("op" "cider/state") ,,, from there.

I have fully tested out this solution, it works well for its two foreseen use cases (working around the shadow-cljs issue, and responding to external events).

Cheers - V

@vemv vemv requested a review from bbatsov August 7, 2023 10:59
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bbatsov commented Aug 7, 2023

I think the change about the namespace should be done separately.

CHANGELOG.md Outdated
@@ -2,6 +2,13 @@

## master (unreleased)

### New features

* Make the `track-state` middleware invokeable directly, by requesting the new `"cider/state"` op.
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I'd name this get-state or even better - get-ns-state, so it's clearer what it does. It wasn't that important when it couldn't be triggered, but now it should be some verb in line with most ops.

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I chose it for consistency with this key https://github.com/clojure-emacs/cider/blob/eedbab26684cb1ce01a940b5b0da9ff78aeb4eac/cider-repl.el#L238 , however I'd agree that the alternatives are clearer

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Yeah, I get this, but I don't think such a name would be appropriate for something one can invoke. The response will obviously stay the same.

@@ -1302,7 +1288,7 @@ Returns::



=== `log-add-appender`
=== `cider/log-add-appender`
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I'm guessing you were doing some experiments with this.

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cider.nrepl.middleware.log uses ns-qualified ops, so the doc benefits from this tweak

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I think the change about the namespace should be done separately.

The doc one?

CHANGELOG.md Outdated
@@ -2,6 +2,13 @@

## master (unreleased)

### New features

* Make the `track-state` middleware invokeable directly, by requesting the new `"cider/state"` op.
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I chose it for consistency with this key https://github.com/clojure-emacs/cider/blob/eedbab26684cb1ce01a940b5b0da9ff78aeb4eac/cider-repl.el#L238 , however I'd agree that the alternatives are clearer

@@ -1302,7 +1288,7 @@ Returns::



=== `log-add-appender`
=== `cider/log-add-appender`
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cider.nrepl.middleware.log uses ns-qualified ops, so the doc benefits from this tweak

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bbatsov commented Aug 8, 2023

I think the change about the namespace should be done separately.

My bad - I didn't read the diff carefully and I thought you were also adding a solution for #710 when I saw the update to the docs. :-)

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vemv commented Aug 9, 2023

Thanks!

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