210/233: snippets: Add a 'remove' snippet.

[guix-commits]

apteryx pushed a commit to branch wip-ipython-polyglossia
in repository guix.

commit 07241aa59969a055fe25baa339d845e3330a4d4a
Author: Maxim Cournoyer <maxim.cournoyer@gmail.com>
AuthorDate: Wed Apr 20 01:53:31 2022 -0400

    snippets: Add a 'remove' snippet.
    
    * etc/snippets/text-mode/guix-commit-message-remove-package: New file.
---
 etc/snippets/text-mode/guix-commit-message-remove-package | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/etc/snippets/text-mode/guix-commit-message-remove-package 
b/etc/snippets/text-mode/guix-commit-message-remove-package
new file mode 100644
index 0000000000..0c1050f4fe
--- /dev/null
+++ b/etc/snippets/text-mode/guix-commit-message-remove-package
@@ -0,0 +1,13 @@
+# -*- mode: snippet -*-
+# name: guix-commit-message-remove-package
+# key: remove
+# condition: git-commit-mode
+# --
+gnu: Remove ${1:`(with-temp-buffer
+                   (magit-git-wash #'magit-diff-wash-diffs
+                     "diff" "--staged")
+                   (goto-char (point-min))
+                   (when (re-search-forward "\\-(define-public \\(\\S-+\\)" 
nil 'noerror)
+                     (match-string-no-properties 1)))`}.
+
+* `(car (magit-staged-files))` ($1): Delete variable.