guix-play/etc/snippets/text-mode/guix-commit-message-update-package
Ricardo Wurmus d6234620ac
etc: snippets: Prefill package name and version.
* etc/snippets/text-mode/guix-commit-message-update-package: Extract package
name and version from git diff output.
2019-03-07 23:55:24 +01:00

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# -*- mode: snippet -*-
# name: guix-commit-message-update-package
# key: update
# condition: git-commit-mode
# --
gnu: ${1:`(with-temp-buffer
(magit-git-wash #'magit-diff-wash-diffs
"diff" "--staged")
(beginning-of-buffer)
(when (search-forward "(define-public " nil 'noerror)
(thing-at-point 'sexp 'no-properties)))`}: Update to ${2:`(with-temp-buffer
(magit-git-wash #'magit-diff-wash-diffs
"diff" "--staged")
(beginning-of-buffer)
(search-forward "name" nil 'noerror)
(search-forward "+" nil 'noerror) ; first change
(when (and (search-forward "version " nil 'noerror)
(looking-at-p "\""))
(let ((end (save-excursion (search-forward "\")" nil 'noerror))))
(when end
(forward-char)
(buffer-substring-no-properties (point) (- end 2))))))`}.
* `(car (magit-staged-files))` ($1): Update to $2.$0
`(mapconcat (lambda (file) (concat "* " file)) (cdr (magit-staged-files)) "\n")`