Start writing Elisp

test.el

+(defun file-as-string (file &optional coding)
+  "Return FILE's contents as a multibyte string.
+Decode from the text using CODING (default: `utf-8')."
+  ;; Inspired by `f-read-bytes' from https://github.com/rejeep/f.el
+  (let ((bytes (with-temp-buffer
+                 (set-buffer-multibyte nil)
+                 (setq buffer-file-coding-system 'binary)
+                 (insert-file-contents-literally file)
+                 (buffer-substring-no-properties (point-min) (point-max)))))
+    (decode-coding-string bytes (or coding 'utf-8))))
+
+;; Just prove we can parse JSON in Emacs.  That's enough for now.
+(let* ((json  (file-as-string "out.tmp"))
+       (issue (json-parse-string json))
+       (id          (gethash "iid" issue))
+       (title       (gethash "title" issue))
+       (desc        (gethash "description" issue))
+       (status      (gethash "state" issue)))
+  (message "Issue #%d: \"%s\"" id title))