From f1d594081881e42a273dfd0d857f0af41615270d Mon Sep 17 00:00:00 2001
From: Vivien Kraus <vivien@planete-kraus.eu>
Date: Mon, 15 Nov 2021 13:57:18 +0000
Subject: [PATCH] gnu: Add emacs-vala-mode.

* gnu/packages/emacs-xyz (emacs-vala-mode): New variable.
---
 gnu/packages/emacs-xyz.scm | 43 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 113471ae14..9be6a306e1 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -29993,3 +29993,46 @@ (define-public emacs-global-tags
 wraps GNU Global calls and integration to editor using this API with
 project.el and xref.el.")
       (license license:gpl3+))))
+
+(define-public emacs-vala-mode
+  ;; Upstream has no tagged release.
+  (let ((commit "d696a8177e94c81ea557ad364a3b3dcc3abbc50f")
+        (revision "0"))
+    (package
+      (name "emacs-vala-mode")
+      (version (git-version "0.1" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/rrthomas/vala-mode")
+               (commit commit)))
+         (sha256
+          (base32 "0g5pdq757z9d8rk489n5ilhqipdc4i4sfkjwwrxyvgjlapjc04c0"))))
+      (build-system emacs-build-system)
+      (arguments
+       '(#:phases
+         (modify-phases %standard-phases
+           (add-after 'unpack 'disable-multiline-support
+             (lambda* (#:key inputs #:allow-other-keys)
+               (make-file-writable "vala-mode.el")
+               (emacs-batch-edit-file "vala-mode.el"
+                 '(progn
+                   (goto-char (point-min))
+                   (re-search-forward ";; Support multiline strings")
+                   (move-beginning-of-line 1)
+                   (kill-sexp)
+                   (re-search-forward "vala-multiline-strings")
+                   (backward-up-list)
+                   (kill-sexp)
+                   (basic-save-buffer))))))))
+      (home-page "https://github.com/rrthomas/vala-mode")
+      (synopsis "Vala mode for Emacs")
+      (description
+       "This package provides a major mode for editing .vala and .vapi files
+in Emacs.  See @url{http://live.gnome.org/Vala} for details about Vala
+language.
+
+This mode was based on Dylan Moonfire's @samp{csharp-mode}.
+")
+      (license license:gpl2+))))
-- 
2.33.1