added support git

1 files changed, 97 insertions, 0 deletions

diff --git a/lisp/init-git.el b/lisp/init-git.el
new file mode 100644
index 0000000..ef7acc1
--- /dev/null
+++ b/lisp/init-git.el
@@ -0,0 +1,97 @@
+;;; init-git.el --- .Emacs Configuration -*- lexical-binding: t -*-
+;;; Commentary:
+;;
+
+;;; Code:
+(setq vc-follows-symlinks t
+      find-file-visit-truename t
+      vc-handled-backends nil)
+
+(if (display-graphic-p)
+    (use-package git-gutter-fringe
+      :ensure t
+      :config
+      (global-git-gutter-mode t)
+      (setq-default fringes-outside-margins t)
+      (setq-default left-fringe-width 10)
+      (setq indicate-empty-lines nil)
+      (set-face-foreground 'git-gutter-fr:modified "purple")
+      (set-face-foreground 'git-gutter-fr:added "green")
+      (set-face-foreground 'git-gutter-fr:deleted "red")
+
+      (defun my-reshape-git-gutter (gutter)
+        "Re-shape gutter for `ivy-read'."
+        (let* ((linenum-start (aref gutter 3))
+               (linenum-end (aref gutter 4))
+               (target-line "")
+               (target-linenum 1)
+               (tmp-line "")
+               (max-line-length 0))
+          (save-excursion
+            (while (<= linenum-start linenum-end)
+              (goto-line linenum-start)
+              (setq tmp-line (replace-regexp-in-string "^[ \t]*" ""
+                                                       (buffer-substring (line-beginning-position)
+                                                                         (line-end-position))))
+              (when (> (length tmp-line) max-line-length)
+                (setq target-linenum linenum-start)
+                (setq target-line tmp-line)
+                (setq max-line-length (length tmp-line)))
+
+              (setq linenum-start (1+ linenum-start))))
+          ;; build (key . linenum-start)
+          (cons (format "%s %d: %s"
+                        (if (eq 'deleted (aref gutter 1)) "-" "+")
+                        target-linenum target-line)
+                target-linenum)))
+
+      (defun my-goto-git-gutter ()
+        (interactive)
+        (if git-gutter-fr:diffinfos
+            (ivy-read "git-gutters-fr:"
+                      (mapcar 'my-reshape-git-gutter git-gutter-fr:diffinfos)
+                      :action (lambda (e)
+                                ;; ivy9+ keep `(car e)'
+                                ;; ivy8- strip the `(car e)'
+                                ;; we handle both data structure
+                                (unless (numberp e) (setq e (cdr e)))
+                                (goto-line e)))
+          (message "NO git-gutters-fringe!")))))
+
+(use-package gitconfig-mode
+  :ensure t
+  :mode ("/\\.?git/?config$"
+         "/\\.gitmodules$")
+  :init (add-hook 'gitconfig-mode-hook 'flyspell-mode))
+
+(use-package gitignore-mode
+  :ensure t
+  :mode ("/\\.gitignore$"
+         "/\\.git/info/exclude$"
+         "/git/ignore$"))
+
+(use-package gitattributes-mode
+  :ensure t
+  :defer t)
+
+(use-package git-timemachine
+  :ensure t
+  :commands git-timemachine
+  :bind (:map git-timemachine-mode
+              ("c" . git-timemachine-show-current-revision)
+              ("b" . git-timemachine-switch-branch)))
+
+;;; smerge-mode video explain https://emacsgifs.github.io/public/videos/758861381898637313.mp4
+(use-package smerge-mode
+  :ensure t
+  :config
+  (defun enable-smerge-maybe ()
+    (when (and buffer-file-name (vc-backend buffer-file-name))
+      (save-excursion
+        (goto-char (point-min))
+        (when (re-search-forward "^<<<<<<< " nil t)
+          (smerge-mode +1)))))
+  (add-hook 'buffer-list-update-hook #'enable-smerge-maybe))
+
+(provide 'init-git)
+;;; init-git.el ends here