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51/88: gnu: Add emacs-helpful.

From: Oleg Pykhalov
Subject: 51/88: gnu: Add emacs-helpful.
Date: Wed, 2 May 2018 13:21:13 -0400 (EDT)

wigust pushed a commit to branch master
in repository guix.

commit b2bf4f54adb08a6610bdc450f264cc5264a4460e
Author: Oleg Pykhalov <address@hidden>
Date:   Wed May 2 19:05:50 2018 +0300

    gnu: Add emacs-helpful.
    * gnu/packages/emacs.scm (emacs-helpful): New public variable.
 gnu/packages/emacs.scm | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index 84e874b..b8b29dc 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -9308,3 +9308,42 @@ downloading manager for Emacs.")
      "This package provides an Emacs CSV mode, a major mode for editing
 records in a generalized CSV (character-separated values) format.")
     (license license:gpl3+)))
+(define-public emacs-helpful
+  (package
+    (name "emacs-helpful")
+    (version "0.1")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "";
+                    version ".tar.gz"))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "16dx566qzrjj0bf43lnw7h1qlvgs94brqplamw8kppp2ylr72qs9"))))
+    (build-system emacs-build-system)
+    (propagated-inputs
+     `(("emacs-elisp-refs" ,emacs-elisp-refs)))
+    (home-page "";)
+    (synopsis "More contextual information in Emacs help")
+    (description "@code{helpful} is an alternative to the built-in Emacs help
+that provides much more contextual information.
address@hidden Show the source code for interactively defined functions (unlike 
+built-in Help).
address@hidden Fall back to the raw sexp if no source is available.
address@hidden Show where a function is being called.
address@hidden Docstrings will Highlight the summary (the first sentence), 
+cross-references, hide superfluous puncuation.
address@hidden Show you the properties that have been applied to the current
+symbol.  This provides visibility of features like edebug or byte-code
address@hidden Provide a separate @code{helpful-command} function to view 
address@hidden Display any keybindings that apply to interactive functions.
address@hidden Trace, disassemble functions from inside Helpful.  This is 
+and doesn't require memorisation of commands.
address@hidden itemize\n")
+    (license license:gpl3+)))

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