libera/#shirakumo - IRC Chatlog

18:20:59 scymtym Shinmera: thanks for adding the builtin indentation. i'm going to add trivial-indent to the dependencies of the alloy-code-editor system. SLIME/SWANK have the additional fallback behavior of getting the lambda list of macros and turning that into an indentation specification on-the-fly. is that something you want?

18:23:28 Colleen <shinmera> https://mastodon.tymoon.eu/@shinmera/116880084366810003

18:23:41 Colleen <shinmera> uhm

18:23:48 Colleen <shinmera> I guess that's one way of doing it

18:24:07 Colleen <shinmera> but in the editor case, the remote lisp system needs to send over the rules it knows to the editor anyway

18:24:28 Colleen <shinmera> so just having a table of rules you can plug in would be fine as well, without the dependency

18:25:08 Colleen <shinmera> the dependency alone also won't be sufficient for indentation since it excludes some important stuff

18:30:36 scymtym at the moment, i need to obtain indentation rules so that i can test the indentation logic. getting the rules from the "local" image is fine for that. i see the point that the rules will ultimately have to come from the remote image, though

18:30:51 Colleen <shinmera> right, ok

18:31:21 Colleen <shinmera> trivial-indent is about as lightweight of a dependency as you can get anyway, so it's no big deal

18:31:34 scymtym should i have the editor just call something like (alloy:indentation SYMBOL) and plug in the local stuff for now?

18:32:39 Colleen <shinmera> well, probably better to do something like (alloy-code-editor:indent editor operator expression) so it can be customised arbitrarily, with a default fallback that queries trivial-indent:indentation

18:33:18 Colleen <shinmera> or whatever, idk what you got hooked up, but essentially (I guess) I'm wondering how to handle the more complicated things that don't fit into the slime syntax

18:33:40 scymtym yes, that exists, but it bottoms out to looking up the indentation for a symbol at some point

18:33:45 Colleen <shinmera> right, fair

18:34:18 Colleen <shinmera> in that case (alloy-code-editor:indentation-rule symbol) would be fine

18:34:26 scymtym i guess there is the question of caching and also who triggers the transmission of rules from the remote image to the local image and when

18:34:48 Colleen <shinmera> rules are sent over when defined or on first connect

18:35:03 Colleen <shinmera> so the server initiates the transmission

18:35:48 scymtym right. the fallback i described above could be tricky since it would need re-transmission when the macro lambda list changes

18:36:41 scymtym i suspect the fallback is important since most user-defined macros don't have indentation hints

18:37:03 Colleen <shinmera> Sorry, I'm a bit lost

18:37:07 Colleen <shinmera> what do you mean by fallback here?

18:37:40 scymtym i mean SLIME's strategy of analyzing macro lambda lists if there is no explicit indentation rule

18:37:50 Colleen <shinmera> ah

18:38:22 Colleen <shinmera> hmmm

18:38:27 scymtym the easiest solution would be to not support that, of course

18:39:23 scymtym but then all macros from, say, alexandria would be indented like functions

18:39:49 Colleen <shinmera> how does slime handle that? I presume it just caches the arglists?

18:41:27 scymtym presumably. i have looked only at the lambda list parsing part so far. but i have seen some cache and also big batches of macro lambda list parsing. so worst case could be flushing and re-analyzing everything quite often

18:41:39 Colleen <shinmera> right

18:41:50 Colleen <shinmera> indentation in slime can be surprisingly slow, so, quite possible

18:46:10 Colleen <shinmera> I'll probably add a custom message type to fetch the arglist (and docstring) of something

18:46:20 Colleen <shinmera> once I'm back to working on Commander

18:47:51 scymtym looks like the swank side (re)computes the indentation rules for everything or for everything in a given package and syncs changes to slime

18:48:11 scymtym in a separate thread on the swank side

18:48:12 scymtym wild

18:48:16 Colleen <shinmera> heh

18:48:28 Colleen <shinmera> does it do that after every compilation request, or...?

18:48:38 Colleen <shinmera> just periodically

18:51:12 scymtym (defvar *configure-emacs-indentation* t "When true, automatically send indentation information to Emacs after each command.")

18:51:19 Colleen <shinmera> ah.

18:51:21 scymtym not sure what a command is in this context

18:54:25 Colleen <shinmera> well, I think for now we can ignore that, though I'll think about it

18:54:57 scymtym yes. i will just add the function to the editor and hook something up that helps with testing for now