[Fix #1748] Add new command cider-pprint-eval-last-sexp-to-repl

The command evals the preceding sexp and inserts its pretty-printed
output in the REPL.

CHANGELOG.md

@@ -11,6 +11,7 @@ request dispatch.
 * Add a new interactive command `nrepl-toggle-message-logging`. It allows you to quickly toggle nREPL message logging on and off
 within the scope of your current Emacs session.
 * [#1851](https://github.com/clojure-emacs/cider/issues/1851): Add a command to rerun the last test ran via `cider-test-run-test`. The new command is named `cider-test-rerun-test` and is about to `C-c C-t (C-)g`.
+* [#1748](https://github.com/clojure-emacs/cider/issues/1748): Add new interactive command `cider-pprint-eval-last-sexp-to-repl`.
 
 ### Changes
 

cider-interaction.el

@@ -1136,6 +1136,20 @@ If invoked with a PREFIX argument, switch to the REPL buffer."
   (when prefix
     (cider-switch-to-repl-buffer)))
 
+(defun cider-pprint-eval-last-sexp-to-repl (&optional prefix)
+  "Evaluate the expression preceding point and insert its pretty-printed result in the REPL.
+If invoked with a PREFIX argument, switch to the REPL buffer."
+  (interactive "P")
+  (let* ((conn-buffer (cider-current-connection))
+         (right-margin (max fill-column
+                            (1- (window-width (get-buffer-window conn-buffer))))))
+    (cider-interactive-eval nil
+                            (cider-insert-eval-handler conn-buffer)
+                            (cider-last-sexp 'bounds)
+                            (cider--nrepl-pprint-request-plist (or right-margin fill-column))))
+  (when prefix
+    (cider-switch-to-repl-buffer)))
+
 (defun cider-eval-print-last-sexp ()
   "Evaluate the expression preceding point.
 Print its value into the current buffer."

cider-mode.el

@@ -226,6 +226,7 @@ Configure `cider-cljs-lein-repl' to change the ClojureScript REPL to use."]
     ["Eval last sexp in popup buffer" cider-pprint-eval-last-sexp]
     ["Eval last sexp and replace" cider-eval-last-sexp-and-replace]
     ["Eval last sexp to REPL" cider-eval-last-sexp-to-repl]
+    ["Eval last sexp and pretty-print to REPL" cider-pprint-eval-last-sexp-to-repl]
     ["Insert last sexp in REPL" cider-insert-last-sexp-in-repl]
     ["Eval top-level sexp to comment" cider-eval-defun-to-comment]
     "--"