emacs: Autocomplete tweaks

modules/development/default.nix

@@ -44,6 +44,17 @@
               "SPC n" '(flymake-goto-next-error :which-key "Next error")
               "SPC p" '(flymake-goto-prev-error :which-key "Previous error")
               )
+            :hook (eglot-managed-mode . chvp--eglot-capf)
+            :config
+            (advice-add 'eglot-completion-at-point :around #'cape-wrap-buster)
+            (defun chvp--eglot-capf ()
+              (setq-local completion-at-point-functions
+                          (list (cape-super-capf
+                                 #'eglot-completion-at-point
+                                 #'tempel-complete)
+                                #'cape-file
+                                #'dabbrev-capf
+                                #'cape-line)))
             )
 
           ;; Forth syntax support