{"action":"created","comment":{"url":"https://api.github.com/repos/RedPRL/sml-redprl/pulls/comments/136708693","pull_request_review_id":60288421,"id":136708693,"diff_hunk":"@@ -192,31 +192,32 @@ Thm Not : [(-> [_ : wbool] wbool)] by [\n   {lam x. if x then `ff else `tt}; auto\n ].\n \n-Thm FunExt(#A; #B) : [\n-  type/A : #A type,\n-  type/B : #B type\n-  >>\n+Thm FunExt{l:lvl} : [\n   (->\n-   [f : (-> #A #B)]\n-   [g : (-> #A #B)]\n-   [p : (-> [y : #A] (path {_} #B ($ f y) ($ g y)))]\n-   (path {_} (-> #A #B) f g))\n+   [a b : (univ l)]\n+   [f g : (-> a b)]\n+   [p : (-> [y : a] (path {_} b ($ f y) ($ g y)))]\n+   (path {_} (-> a b) f g))\n ] by [\n-  lam f, g, p.\n-    <i> lam a. use p [use a, @i]\n+  lam a, b, f, g, p.\n+    <i> lam x. use p [use x, @i]\n ].\n \n Print FunExt.\n \n-\n-Tac FunExtTac(#A; #B; #F; #G) = [\n-  let p : [(-> [x : #A] (path {_} wbool ($ #F x) ($ #G x)))] = id.\n-  <i> lam a. use p [use a, @i]\n+Tac FunExtTac{l:lvl} = [\n+  query gl <- goal.\n+  match [gl:jdg] {\n+    [a, b, f, g | #jdg{(path {_} (-> %a %b) %f %g) true} =>\n+      use {FunExt l}\n+        [ `%a, `%b, `%f, `%g, id ]]\n+  }","path":"test/examples.prl","position":37,"original_position":37,"commit_id":"8560185367d531b6d9a6010e38320fbc2937ab85","original_commit_id":"8560185367d531b6d9a6010e38320fbc2937ab85","user":{"login":"favonia","id":1471328,"avatar_url":"https://avatars1.githubusercontent.com/u/1471328?v=4","gravatar_id":"","url":"https://api.github.com/users/favonia","html_url":"https://github.com/favonia","followers_url":"https://api.github.com/users/favonia/followers","following_url":"https://api.github.com/users/favonia/following{/other_user}","gists_url":"https://api.github.com/users/favonia/gists{/gist_id}","starred_url":"https://api.github.com/users/favonia/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/favonia/subscriptions","organizations_url":"https://api.github.com/users/favonia/orgs","repos_url":"https://api.github.com/users/favonia/repos","events_url":"https://api.github.com/users/favonia/events{/privacy}","received_events_url":"https://api.github.com/users/favonia/received_events","type":"User","site_admin":false},"body":"Do you mean something like `use {FunExt l} [_, _, _, _, id]`? That is, unification everywhere?","created_at":"2017-09-03T05:29:28Z","updated_at":"2017-09-03T05:29:28Z","html_url":"https://github.com/RedPRL/sml-redprl/pull/349#discussion_r136708693","pull_request_url":"https://api.github.com/repos/RedPRL/sml-redprl/pulls/349","author_association":"CONTRIBUTOR","_links":{"self":{"href":"https://api.github.com/repos/RedPRL/sml-redprl/pulls/comments/136708693"},"html":{"href":"https://github.com/RedPRL/sml-redprl/pull/349#discussion_r136708693"},"pull_request":{"href":"https://api.github.com/repos/RedPRL/sml-redprl/pulls/349"}},"in_reply_to_id":136708503},"pull_request":{"url":"https://api.github.com/repos/RedPRL/sml-redprl/pulls/349","id":139035876,"html_url":"https://github.com/RedPRL/sml-redprl/pull/349","diff_url":"https://github.com/RedPRL/sml-redprl/pull/349.diff","patch_url":"https://github.com/RedPRL/sml-redprl/pull/349.patch","issue_url":"https://api.github.com/repos/RedPRL/sml-redprl/issues/349","number":349,"state":"open","locked":false,"title":"in examples, 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