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* bug#50572: 28.0.50; [PATCH] fix VC to find the responsible backend with the most specific path.
@ 2021-09-13 15:47 Manuel Giraud
  2021-09-13 16:10 ` Eli Zaretskii
  2021-11-06  0:16 ` Lars Ingebrigtsen
  0 siblings, 2 replies; 58+ messages in thread
From: Manuel Giraud @ 2021-09-13 15:47 UTC (permalink / raw)
  To: 50572

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When calling 'vc-next-action' on an unregistered file, VC could choose a
backend that is very far above this file in the directory hierarchy.

In my case, it chooses SVN as backend (because I have one in my homedir)
but I wanted it to choose the Git backend of the directory this file
resides.

This patch solves this issue by selecting the backend with the most
specific (in fact, the longest string) path to the file.


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From 9e673edc28f84a75f3bf0f53e7fba01c2f50e51c Mon Sep 17 00:00:00 2001
From: Manuel Giraud <manuel@ledu-giraud.fr>
Date: Mon, 13 Sep 2021 17:31:31 +0200
Subject: [PATCH] let VC find a responsible backend with the most specific
 path.

---
 lisp/vc/vc.el | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/lisp/vc/vc.el b/lisp/vc/vc.el
index 4fcba65ab4..7160c98820 100644
--- a/lisp/vc/vc.el
+++ b/lisp/vc/vc.el
@@ -937,11 +937,16 @@ vc-backend-for-registration
 use."
   (catch 'found
     ;; First try: find a responsible backend, it must be a backend
-    ;; under which FILE is not yet registered.
-    (dolist (backend vc-handled-backends)
-      (and (not (vc-call-backend backend 'registered file))
-	   (vc-call-backend backend 'responsible-p file)
-	   (throw 'found backend)))
+    ;; under which FILE is not yet registered and with the most
+    ;; specific path to FILE.
+    (let ((max 0) bk)
+      (dolist (backend vc-handled-backends)
+        (when (not (vc-call-backend backend 'registered file))
+          (let* ((path (vc-call-backend backend 'responsible-p file))
+                 (len (length path)))
+            (when (and len (> len max))
+              (setq max len bk backend)))))
+      (when bk (throw 'found bk)))
     ;; no responsible backend
     (let* ((possible-backends
 	    (let (pos)
-- 
2.33.0


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In GNU Emacs 28.0.50 (build 1, x86_64-unknown-openbsd7.0, X toolkit, cairo version 1.16.0, Xaw3d scroll bars)
 of 2021-09-13 built on elite.giraud
Repository revision: 5ee05fa75d517fdd13c9795aa78e12489140e388
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12013000
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-- 
Manuel Giraud

^ permalink raw reply related	[flat|nested] 58+ messages in thread

end of thread, other threads:[~2021-11-14  0:51 UTC | newest]

Thread overview: 58+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-09-13 15:47 bug#50572: 28.0.50; [PATCH] fix VC to find the responsible backend with the most specific path Manuel Giraud
2021-09-13 16:10 ` Eli Zaretskii
2021-09-13 23:48   ` Dmitry Gutov
2021-09-14  2:28     ` Eli Zaretskii
2021-09-14  7:57     ` Manuel Giraud
2021-09-14  7:50   ` Manuel Giraud
2021-09-14 11:38     ` Eli Zaretskii
2021-09-14 12:08       ` Manuel Giraud
2021-09-14 12:57         ` Eli Zaretskii
2021-09-14 15:15       ` Manuel Giraud
2021-09-14 16:03         ` Eli Zaretskii
2021-09-15  9:17           ` Manuel Giraud
2021-09-15 10:35           ` Dmitry Gutov
2021-09-15 11:20             ` Eli Zaretskii
2021-09-15 11:36               ` Dmitry Gutov
2021-09-15 10:41       ` Dmitry Gutov
2021-09-15 11:22         ` Eli Zaretskii
2021-09-15 11:37           ` Dmitry Gutov
2021-09-15 11:44             ` Eli Zaretskii
2021-09-15 11:47               ` Dmitry Gutov
2021-09-16 12:55                 ` Lars Ingebrigtsen
2021-11-06  0:16 ` Lars Ingebrigtsen
2021-11-06 15:01   ` Andy Moreton
2021-11-06 18:19     ` Lars Ingebrigtsen
2021-11-06 22:30       ` Andy Moreton
2021-11-06 22:35         ` Dmitry Gutov
2021-11-07 13:17           ` Lars Ingebrigtsen
2021-11-08  9:28             ` Manuel Giraud
2021-11-08  9:31               ` Lars Ingebrigtsen
2021-11-08 10:37                 ` Manuel Giraud
2021-11-09  3:29                   ` Lars Ingebrigtsen
2021-11-09  8:09                     ` Juri Linkov
2021-11-09 22:55                       ` Lars Ingebrigtsen
2021-11-09  8:51                     ` Manuel Giraud
2021-11-09 23:30                       ` Lars Ingebrigtsen
2021-11-10  0:06                         ` Dmitry Gutov
2021-11-10  0:20                           ` Lars Ingebrigtsen
2021-11-10  0:29                             ` Dmitry Gutov
2021-11-10  0:39                               ` Lars Ingebrigtsen
2021-11-10 12:54                                 ` Eli Zaretskii
2021-11-10 12:59                                   ` Lars Ingebrigtsen
2021-11-10 14:23                                     ` Eli Zaretskii
2021-11-11  2:56                                       ` Lars Ingebrigtsen
2021-11-11  7:06                                         ` Eli Zaretskii
2021-11-11  7:46                                           ` Michael Albinus
2021-11-11  8:04                                             ` Eli Zaretskii
2021-11-11 10:46                                               ` Michael Albinus
2021-11-11 12:21                                           ` Lars Ingebrigtsen
2021-11-11 15:09                                             ` Eli Zaretskii
2021-11-12  3:01                                               ` Lars Ingebrigtsen
2021-11-12  9:51                         ` Manuel Giraud
2021-11-12 12:05                           ` Eli Zaretskii
2021-11-12 15:09                             ` Manuel Giraud
2021-11-12 15:20                               ` Eli Zaretskii
2021-11-12 15:41                                 ` Manuel Giraud
2021-11-12 19:21                                 ` Manuel Giraud
2021-11-12 19:40                                   ` Eli Zaretskii
2021-11-14  0:51                                   ` Lars Ingebrigtsen

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