gnu: Add emacs-valign.

* gnu/packages/emacs-xyz.scm (emacs-valign): New variable.

gnu/packages/emacs-xyz.scm

@@ -10531,6 +10531,29 @@ names, e.g., @samp{#0000ff} is displayed in white with a blue background.")
 keybindings in Emacs, and does not come with any predefined bindings.")
       (license license:expat))))
 
+(define-public emacs-valign
+  (package
+    (name "emacs-valign")
+    (version "3.1.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/casouri/valign")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "11ks6z532i7vxi6f9g32zhimvikhsqywa2bd5fnnj2ahfx3msa95"))))
+    (build-system emacs-build-system)
+    (home-page "https://github.com/casouri/valign")
+    (synopsis "Pixel-perfect visual alignment for Org and Markdown tables")
+    (description
+     "Valign provides visual alignment for Org mode, Markdown and Table.el
+tables on GUI Emacs.  It can properly align tables containing variable-pitch
+font, CJK characters and images.  Meanwhile, the text-based alignment
+generated by Org mode (or Markdown mode) is left untouched.")
+    (license license:gpl3+)))
+
 (define-public emacs-visual-fill-column
   (package
     (name "emacs-visual-fill-column")