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;;; ycp-vc.el -- My config for vcs related -*- lexical-binding: t -*-

;; Copyright (C) 2023 Free Software Foundation.

;; Author: Yuchen Pei <id@ypei.org>
;; Package-Requires: ((emacs "28.2"))

;; This file is part of dotfiles.

;; dotfiles is free software: you can redistribute it and/or modify it under
;; the terms of the GNU Affero General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; dotfiles is distributed in the hope that it will be useful, but WITHOUT
;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General
;; Public License for more details.

;; You should have received a copy of the GNU Affero General Public
;; License along with dotfiles.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; My config for vcs related. Covers diff, vc, magit, ediff etc.

;;; Code:



;;; vc, magit, diff
(my-package vc
  (:delay 5)
  ;; A var from newer emacs, in .dir-locals of emacs source
  (add-to-list 'safe-local-variable-values
               '(vc-prepare-patches-separately)))

(my-package vc-hooks
  (:delay 5)
  ;;; avoid the "file is symlink to git controlled repo, follow?"
  (setq vc-follow-symlinks t)
)

;;;; `diff-mode'
(my-package diff-mode
  (setq diff-default-read-only t)
  (setq diff-advance-after-apply-hunk t)
  (setq diff-update-on-the-fly t)
  ;; The following are from Emacs 27.1
  (setq diff-font-lock-prettify t)
  (setq diff-font-lock-syntax 'hunk-also)
  (add-to-list 'safe-local-variable-values
               '(diff-add-log-use-relative-names . t)))

(my-package ediff
  (:delay 30)
  (my-keybind global-map
    "C-c = b" #'ediff-buffers
    "C-c = B" #'ediff-buffers3
    "C-c = c" #'compare-windows
    "C-c = =" #'ediff-files
    "C-c = f" #'ediff-files
    "C-c = F" #'ediff-files3
    "C-c = m" #'count-matches
    "C-c = r" #'ediff-revision
    "C-c = p" #'ediff-patch-file
    "C-c = P" #'ediff-patch-buffer
    "C-c = l" #'ediff-regions-linewise
    "C-c = w" #'ediff-regions-wordwise)
  (setq ediff-keep-variants nil)
  (setq ediff-make-buffers-readonly-at-startup nil)
  (setq ediff-show-clashes-only t)
  (setq ediff-split-window-function 'split-window-horizontally)
  (add-hook 'ediff-before-setup-hook 'my-select-new-frame)
  (setq ediff-combination-pattern
        '("<<<<<<< A: HEAD" A
          "||||||| Ancestor" Ancestor
          "======="
          B ">>>>>>> B: Incoming"))
  (setq ediff-diff-options "-w")
  (setq ediff-window-setup-function 'ediff-setup-windows-plain)
  )

(my-package vc-git
  (:delay 30)
  (add-to-list 'safe-local-variable-values
               '(vc-git-annotate-switches . "-w"))
  (setq vc-git-grep-template "git --no-pager grep -n <C> -A1 -B1 -e <R> -- <F>"))

(my-package diff-hl
  (:delay 30)
  (:install t)
  ;; diff-hl-mode can slow down things in buffers visiting large
  ;; files, so here we only enable it for prog-mode
  (add-hook 'prog-mode-hook #'diff-hl-mode)
  (diff-hl-flydiff-mode))

(my-package diffview
  (:delay 30)
  (:install t)
  )

(my-package git-commit
  (:install t)
  (:delay 30)
  (setq git-commit-style-convention-checks '(non-empty-second-line))
  ;; Refresh all buffers in the project after a commit for diff-hl
  (require 'my-diff-hl)
  (add-hook 'git-commit-post-finish-hook #'my-project-diff-hl-update)
  )

(my-package magit
  (:install t)
  (:delay 30)

  (require 'magit-diff)
  (setq magit-diff-refine-hunk t)
  (setq magit-diff-adjust-tab-width t)
  (add-hook 'magit-diff-mode-hook #'my-turn-off-truncate-lines)

  (require 'magit-repos)
  (my-setq-from-local magit-repository-directories)
  (put 'magit-clean 'disabled nil)

  (require 'magit-ediff)
  (add-hook 'magit-ediff-quit-hook 'delete-frame)

  (require 'magit-branch)
  (advice-add 'magit-checkout :filter-args #'my-magit-ignore-other-worktrees)
  )

(my-package my-magit
  (:delay 30)
  (my-keybind global-map
    "C-x pM" #'my-project-magit-at
    "C-x g" #'my-magit-status)
  )

(my-package git-email
  (:delay 30)
  ;; Fixes concatenation of the subject and the first line, when
  ;; there's one empty line in between
  (setq git-email-subject-regexp
        (rx bol "Subject:"
            (zero-or-more space) "["
            (zero-or-more (not (any "]" "\n")))
            "PATCH"
            (zero-or-more (not (any "]" "\n")))
            "]" (one-or-more space)
            (one-or-more not-newline)))
  (require 'my-git-email)
  (setq git-email-compose-email-function 'my-git-email-gnus-compose)
  (require 'git-email-magit)
  )

(my-package magit-annex
  (:delay 60))

(provide 'ycp-vc)