clojure layer: add cider-eval-sexp-fu

contrib/lang/clojure/extensions.el

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+;;; extensions.el --- Clojure Layer extensions File for Spacemacs
+;;
+;; Copyright (c) 2012-2015 Sylvain Benner
+;;
+;; Author: Sylvain Benner <sylvain.benner@gmail.com>
+;; URL: https://github.com/syl20bnr/spacemacs
+;;
+;; This file is not part of GNU Emacs.
+;;
+;;; License: GPLv3
+
+;; Pre extensions are loaded *before* the packages
+(defvar clojure-pre-extensions '())
+
+;; Post extensions are loaded *after* the packages
+(defvar clojure-post-extensions '(cider-eval-sexp-fu))
+
+(defun clojure/init-cider-eval-sexp-fu ()
+  (eval-after-load 'eval-sexp-fu
+    '(require 'cider-eval-sexp-fu)))

contrib/lang/clojure/extensions/cider-eval-sexp-fu/README.md

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+# cider-eval-sexp-fu
+
+<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc/generate-toc again -->
+**Table of Contents**
+
+- [cider-eval-sexp-fu](#cider-eval-sexp-fu)
+    - [Install](#install)
+    - [Usage](#usage)
+    - [Customization](#customization)
+
+<!-- markdown-toc end -->
+
+eval-sexp-fu.el extensions for [CIDER][].
+This package briefly highlights evaluated sexps in a clojure buffer
+connected to an nREPL via [CIDER][].
+
+## Install
+
+The package is not yet available in [MELPA][] repositories.
+Check back soon for news.
+
+You can easily install it by opening `cider-eval-sexp-fu.el` in Emacs and call
+`package-install-from-buffer`.
+
+## Usage
+
+Just require it:
+
+```elisp
+(require 'cider-eval-sexp-fu)
+```
+
+## Customization
+
+Customization is done via [eval-sexp-fu][].
+
+[MELPA]: http://melpa.org/
+[eval-sexp-fu]: https://github.com/hchbaw/eval-sexp-fu.el
+[CIDER]: https://github.com/clojure-emacs/cider

contrib/lang/clojure/extensions/cider-eval-sexp-fu/cider-eval-sexp-fu.el

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+;;; cider-eval-sexp-fu.el --- Briefly highlights an evaluated sexps.
+
+;; Adapted from Sam Aaron's code found in emacs-live in order to
+;; be distributable as a package by syl20bnr.
+
+;; Author: Sylvain Benner <sylvain.benner@gmail.com>
+;; Keywords: languages, clojure, cider
+;; Created: 20 Mar 2015
+;; Version: 1.0
+;; Package-Requires: ((emacs "24") (highlight "0") (eval-sexp-fu "0.4.0"))
+
+;; This file is not part of GNU Emacs.
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Tiny feature adding support for cider eval functions.
+;; See `eval-sexp-fu' help for more info on how to configure the
+;; flash behavior.
+
+;;; Code:
+
+(require 'highlight)
+(require 'eval-sexp-fu)
+
+(defun cider-esf--bounds-of-last-sexp ()
+  "Return the bounds of the defun around point.
+
+Copies semantics directly from the fn cider-last-sexp to ensure highlighted
+area is identical to that which is evaluated."
+  (cons (save-excursion
+          (backward-sexp)
+          (point))
+        (point)))
+
+(defun cider-esf--initialize-cider ()
+  (define-eval-sexp-fu-flash-command cider-eval-last-sexp
+    (eval-sexp-fu-flash (cider-esf--bounds-of-last-sexp)))
+  (define-eval-sexp-fu-flash-command cider-pprint-eval-last-sexp
+    (eval-sexp-fu-flash (cider-esf--bounds-of-last-sexp)))
+  (define-eval-sexp-fu-flash-command cider-eval-defun-at-point
+    (eval-sexp-fu-flash (let ((bounds (cider--region-for-defun-at-point)))
+                          (cons (first bounds) (second bounds)))))
+
+  ;; Defines:
+  ;; `eval-sexp-fu-cider-sexp-inner-list',
+  ;; `eval-sexp-fu-cider-sexp-inner-sexp'
+  ;; and the pprint variants respectively.
+  (define-eval-sexp-fu-eval-sexp eval-sexp-fu-cider-eval-sexp
+    cider-eval-last-sexp)
+  (define-eval-sexp-fu-eval-sexp eval-sexp-fu-cider-pprint-eval-sexp
+    cider-pprint-eval-last-sexp))
+
+(eval-after-load 'cider
+  '(cider-esf--initialize-cider))
+
+(provide 'cider-eval-sexp-fu)
+
+;;; cider-eval-sexp-fu.el ends here