[bug#34900] Add emacs-semantic-refactor

[Jack Hill <jackhill@jackhill.us>]

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Hi Guix,

The attached patch adds the emacs-semantic-refactor package.

When reviewing this patch some particular things to look out for/questions 
I have:

0) There are different sections in the (gnu packages emacs-xyz) module 
that are delineated by comments (e.g. Emacs Hacking, Web Browsing, and 
Miscellaneous). I've added the definition of emacs-semantic-refactor near 
the end of the file in the Miscellaneous section. I wonder if this is 
correct or if it should go in the Emacs Hacking section. Paredit, which 
would be used in similar scenarios to semantic-refactor is in the Emacs 
Hacking section.

1) The upstream source contains a number of animated gif files 
demonstrating usage in the srefactor-demos directory. I do not see a build 
process for these, and assume they were created by hand. Are we free to 
distribute these in Guix?

2) semantic-refactor has an optional integration with projectile whose 
availability is checked for with (featurep 'projectile). I have not added 
projectile as an input or propagated-input. Is this OK?

3) I'm still new to writing package definitions, so extra scrutiny is 
warranted, particularly for the synopsis and description.

All the best,
Jack

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From 1470705542f28351ceaf183a49cd5d869a4576db Mon Sep 17 00:00:00 2001
From: Jack Hill <jackhill@jackhill.us>
Date: Sun, 17 Mar 2019 22:01:17 -0400
Subject: [PATCH] gnu: Add emacs-semantic-refactor

* gnu/packages/emacs-xyz.scm (emacs-semantic-refactor): New variable.
---
 gnu/packages/emacs-xyz.scm | 43 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 8d5ee6c5fb..a8a59a2dee 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -36,7 +36,7 @@
 ;;; Copyright © 2018 Mathieu Lirzin <mthl@gnu.org>
 ;;; Copyright © 2018, 2019 Pierre Neidhardt <mail@ambrevar.xyz>
 ;;; Copyright © 2018, 2019 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
-;;; Copyright © 2018 Jack Hill <jackhill@jackhill.us>
+;;; Copyright © 2018, 2019 Jack Hill <jackhill@jackhill.us>
 ;;; Copyright © 2018 Pierre-Antoine Rouby <pierre-antoine.rouby@inria.fr>
 ;;; Copyright © 2018 Alex Branham <alex.branham@gmail.com>
 ;;; Copyright © 2018 Thorsten Wilms <t_w_@freenet.de>
@@ -13691,6 +13691,47 @@ command\", but because it always involves at least two commands (a prefix and
 a suffix) we prefer to call it just a \"transient\".")
       (license license:gpl3+))))
 
+(define-public emacs-semantic-refactor
+  ;; The last release, 0.5, was made on 2015-07-26 and there have been 47
+  ;; commits since then.
+  (let ((commit "6f2c97d17fb70f4ca2112f5a2b99a8ec162004f5"))
+    (package
+      (name "emacs-semantic-refactor")
+      (version (git-version "0.5" "1" commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/tuhdo/semantic-refactor")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1lyz3zjkx2csh0xdy1zpx8s32qp1p3sig57mwi9xhgpqjyf0axmb"))))
+      (build-system emacs-build-system)
+      (home-page "https://github.com/tuhdo/semantic-refactor")
+      (synopsis "Refactoring tool for C/C++ and Lisp dialects")
+      (description "A refactoring tool based on the Emacs Semantic parser
+framework.  For C and C++ it supports operations such as:
+
+@enumerate
+@item Generating class implementations
+@item Generating function prototypes
+@item Converting functions to function pointers
+@item Moving semantic units
+@item etc...
+@end enumerate
+
+For Lisp dialects like Clojure, ELisp, and Scheme, it supports operations such
+as:
+
+@enumerate
+@item Formatting the whole buffer
+@item Converting sexpressions to one or multiple lines
+@item etc...
+@end enumerate\n")
+      (license license:gpl3+))))
+
 (define-public emacs-nhexl-mode
   (package
     (name "emacs-nhexl-mode")
-- 
2.21.0