Backtrace: empv throws error on query

[tvraman]

Backtrace: empv-youtube-tabulated throws error.

Query: "election express" Debugger entered--Lisp error: (void-variable empv--last-youtube-candidates) (#f(compiled-function () #<bytecode 0x1f4bddc1ee43e355>)) (run-hooks change-major-mode-after-body-hook special-mode-hook tabulated-list-mode-hook empv-youtube-results-mode-hook) (apply run-hooks change-major-mode-after-body-hook (special-mode-hook tabulated-list-mode-hook empv-youtube-results-mode-hook)) (run-mode-hooks empv-youtube-results-mode-hook) (empv-youtube-results-mode) (empv--youtube-show-tabulated-results #s(empv--yt-search :query "\"election express\"" :type video :page 1 :results ...)) (empv-youtube-tabulated-last-results) (#f(compiled-function (results) #<bytecode 0x1a2d13398666cf6>) (... ... ... ... ... ... ... ... ... ... ... ... ... ... ...)) (#f(compiled-function (status) #<bytecode -0x29a9729559f5ce9>) (:peer (:certificates (... ... ...) :certificate (:version 3 :serial-number "04:87:60:38:31:5a:c8:98:05:a3:b9:3c:72:47:40:9f:d6:c1" :issuer "C=US,O=Let's Encrypt,CN=E1" :valid-from "2024-03-19" :valid-to "2024-06-17" :subject "CN=yt.artemislena.eu" :public-key-algorithm "EC/ECDSA" :certificate-security-level "High" :signature-algorithm "ECDSA-SHA384" :public-key-id "sha1:4f:b1:a7:e1:4c:1a:a2:3e:44:2e:2e:9f:df:51:fa:46:d3:a3:1b:be" :public-key-id-sha256 "sha256:ff:ad:a0:ae:46:0a:03:48:c5:c7:8a:52:c4:31:64:ac:3f:15:65:cd:8e:a7:09:e9:31:94:1c:6d:7c:62:36:0c" :certificate-id "sha1:d2:82:18:d4:e5:53:8b:8b:b2:5e:96:f9:f9:a6:65:f0:49:92:e5:e3" :pem "-----BEGIN CERTIFICATE-----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\nEydhRlhuCUsYNaVrm8epIbJaB+fj6g9rsxK+QIz3zi+ev1HMhew=\n-----END CERTIFICATE-----\n") :key-exchange "ECDHE-RSA" :protocol "TLS1.3" :cipher "AES-128-GCM" :mac "AEAD" :encrypt-then-mac nil))) (apply #f(compiled-function (status) #<bytecode -0x29a9729559f5ce9>) (:peer (:certificates (... ... ...) :certificate (:version 3 :serial-number "04:87:60:38:31:5a:c8:98:05:a3:b9:3c:72:47:40:9f:d6:c1" :issuer "C=US,O=Let's Encrypt,CN=E1" :valid-from "2024-03-19" :valid-to "2024-06-17" :subject "CN=yt.artemislena.eu" :public-key-algorithm "EC/ECDSA" :certificate-security-level "High" :signature-algorithm "ECDSA-SHA384" :public-key-id "sha1:4f:b1:a7:e1:4c:1a:a2:3e:44:2e:2e:9f:df:51:fa:46:d3:a3:1b:be" :public-key-id-sha256 "sha256:ff:ad:a0:ae:46:0a:03:48:c5:c7:8a:52:c4:31:64:ac:3f:15:65:cd:8e:a7:09:e9:31:94:1c:6d:7c:62:36:0c" :certificate-id "sha1:d2:82:18:d4:e5:53:8b:8b:b2:5e:96:f9:f9:a6:65:f0:49:92:e5:e3" :pem "-----BEGIN CERTIFICATE-----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\nEydhRlhuCUsYNaVrm8epIbJaB+fj6g9rsxK+QIz3zi+ev1HMhew=\n-----END CERTIFICATE-----\n") :key-exchange "ECDHE-RSA" :protocol "TLS1.3" :cipher "AES-128-GCM" :mac "AEAD" :encrypt-then-mac nil))) (url-http-activate-callback) (url-http-content-length-after-change-function 1171 3311 2140) (url-http-generic-filter # 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[isamert]

Can you fully reload the package? empv--last-youtube-candidates is removed but I guess some of the functions are not re-evaluated after upgrade.

If you have any function that depends on this variable, you need to replace with empv--last-youtube-search (it's a struct, not a list anymore). But I don't recommend depending on that variable.

[tvraman]

Me culpa -- was depending on that var in emacspeak; will fix at my end.

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[isamert]

If you can explain the use case, I can make it a part of the public API with a little bit adjustments for the use case.

[tvraman]

See https://github.com/tvraman/emacspeak/blob/master/lisp/emacspeak-empv.el#L358 for an example of my use case, I access that struct to speak something meaningful when the results are loaded.

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[isamert]

Does empv-youtube-tabulated-new-entries-hook work for this use case? We talked about it on #70.

[tvraman]

I still need to implement that, thanks for the reminder.

This code in question at my end traces back to before you implemented "more results" I think. One issue I have with empv, and I dont have a solution to, is that I find the naming scheme for vars and funcs in empv difficult to remember or guess because of their length and I dont have a clear understanding of the thought process that went into the naming.

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[isamert]

That's a fair criticism, there is no guidelines that I can give you to illuminate the thought process of naming. Generally it's just matter of coming up with a name at given moment. If you can give particular examples, like this is the variable name that is used in empv but I would've expected something like this ..., I can go refactor some of them and come up with a better naming scheme.

[tvraman]

Suggestion on naming:

consistently use verb-noun or noun-verb but not a mixture would be one first step.

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[tvraman]

I used the new entries hook like so: https://github.com/tvraman/emacspeak/blob/master/lisp/emacspeak-empv.el#L355 and it works and the code in emacspeak is simpler and less fragile, thanks for the suggestion!

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