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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix 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.
+;;;
+;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages idutils)
+ #:use-module (guix packages)
+ #:use-module (guix download)
+ #:use-module (guix build-system gnu)
+ #:use-module (guix licenses)
+ #:use-module (distro))
+
+(define-public idutils
+ (package
+ (name "idutils")
+ (version "4.6")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (string-append "mirror://gnu/idutils/idutils-"
+ version ".tar.xz"))
+ (sha256
+ (base32
+ "1hmai3422iaqnp34kkzxdnywl7n7pvlxp11vrw66ybxn9wxg90c1"))))
+ (build-system gnu-build-system)
+ (inputs `(;; TODO: Add Emacs as an input for byte-compilation.
+ ;; ("emacs" ,emacs)
+ ("patch/gets"
+ ,(search-patch "diffutils-gets-undeclared.patch"))))
+ (arguments `(#:patches (list (assoc-ref %build-inputs "patch/gets"))))
+ (home-page "http://www.gnu.org/software/idutils/")
+ (synopsis "GNU Idutils, a text searching utility")
+ (description
+ "An \"ID database\" is a binary file containing a list of file
+names, a list of tokens, and a sparse matrix indicating which
+tokens appear in which files.
+
+With this database and some tools to query it, many
+text-searching tasks become simpler and faster. For example,
+you can list all files that reference a particular `\\#include'
+file throughout a huge source hierarchy, search for all the
+memos containing references to a project, or automatically
+invoke an editor on all files containing references to some
+function or variable. Anyone with a large software project to
+maintain, or a large set of text files to organize, can benefit
+from the ID utilities.
+
+Although the name `ID' is short for `identifier', the ID
+utilities handle more than just identifiers; they also treat
+other kinds of tokens, most notably numeric constants, and the
+contents of certain character strings.")
+ (license gpl3+)))