gnu: Add emacs-undohist-el.

* gnu/packages/patches/emacs-undohist-ignored.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add this.
* gnu/packages/emacs-xyz.scm (emacs-undohist-el): New variable.

Signed-off-by: Oleg Pykhalov <go.wigust@gmail.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 17cbbf4166..6de4fc4d20 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -4535,6 +4535,29 @@ Emacs default configuration in uncontroversial ways that nearly everyone can
 agree upon.")
     (license license:gpl3+)))
 
+(define-public emacs-undohist-el
+  (let ((commit "d2239a5f736724ceb9e3b6bcaa86f4064805cda0")
+        (revision "1"))
+    (package
+      (name "emacs-undohist-el")
+      (version (git-version "0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/m2ym/undohist-el")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1c0daw246ky7b1x5b8h55x79pl1pjqk1k348l487bdd8zdj4w9wx"))))
+      (build-system emacs-build-system)
+      (home-page "https://github.com/m2ym/undohist-el")
+      (synopsis "Save undo history between sessions")
+      (description "This package allows persistent use of undo history for
+individual file buffers.")
+      (license license:gpl3+))))
+
 (define-public emacs-eprime
   (let ((commit "17a481af26496be91c07139a9bfc05cfe722506f"))
     (package