[elpa] externals/debbugs 743f65c 258/311: Allow applying patches selectively

[Stefan Monnier]

branch: externals/debbugs
commit 743f65c1e66f56cf202e8fbe37200ca960611957
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>

    Allow applying patches selectively
---
 debbugs-gnu.el | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

diff --git a/debbugs-gnu.el b/debbugs-gnu.el
index 716c37d..7913e96 100644
--- a/debbugs-gnu.el
+++ b/debbugs-gnu.el
@@ -2155,9 +2155,11 @@ or bug ranges, with default to 
`debbugs-gnu-default-bug-number-list'."
           "Emacs repository location: "
           debbugs-gnu-current-directory nil t nil 'file-directory-p))))
 
-(defun debbugs-gnu-apply-patch (&optional branch)
+(defun debbugs-gnu-apply-patch (&optional branch selectively)
   "Apply the patch from the current message.
-If given a prefix, patch in the branch directory instead."
+If given a prefix, patch in the branch directory instead.
+
+If SELECTIVELY, query the user before applying the patch."
   (interactive "P")
   (add-hook 'emacs-lisp-mode-hook #'debbugs-gnu-lisp-mode)
   (add-hook 'diff-mode-hook #'debbugs-gnu-diff-mode)
@@ -2192,14 +2194,21 @@ If given a prefix, patch in the branch directory 
instead."
               (base64-decode-region (point-min) (point-max)))
              ((eq (car elem) 'quoted-printable)
               (quoted-printable-decode-region (point-min) (point-max))))
+       (goto-char (point-min))
+       (while (search-forward "\r\n" nil t)
+         (replace-match "\n" t t))
        (debbugs-gnu-fix-patch debbugs-gnu-current-directory)
-       (call-process-region (point-min) (point-max)
-                            "patch" nil output-buffer nil
-                            "-r" rej "--no-backup-if-mismatch"
-                            "-l" "-f"
-                            "-d" (expand-file-name
-                                  debbugs-gnu-current-directory)
-                            "-p1")))
+       (when (or (not selectively)
+                 (y-or-n-p (format "%s\nApply?"
+                                   (buffer-substring (point-min)
+                                                     (min 200 (point-max))))))
+         (call-process-region (point-min) (point-max)
+                              "patch" nil output-buffer nil
+                              "-r" rej "--no-backup-if-mismatch"
+                              "-l" "-f"
+                              "-d" (expand-file-name
+                                    debbugs-gnu-current-directory)
+                              "-p1"))))
     (set-buffer output-buffer)
     (when (file-exists-p rej)
       (goto-char (point-max))
@@ -2267,7 +2276,8 @@ If given a prefix, patch in the branch directory instead."
   (while (re-search-forward diff-file-header-re nil t)
     (goto-char (match-beginning 0))
     (when-let ((target-name (debbugs-gnu-diff-hunk-target-name dir)))
-      (when (re-search-forward "^\\([+]+\\|-+\\) .*" nil t)
+      (when (and (string-match "^/" target-name)
+                (re-search-forward "^\\([+]+\\|-+\\) .*" nil t))
        (replace-match (concat (match-string 1)
                               " a"
                               (substring target-name (length dir)))