[Emacs-diffs] master 7d392cc 1/2: Ensure current buffer is version-controlled in vc-region-history

[Charles A. Roelli]

branch: master
commit 7d392ccd69f4925bb9990c8267a2b710c80ec5c5
Author: Charles A. Roelli <address@hidden>
Commit: Charles A. Roelli <address@hidden>

    Ensure current buffer is version-controlled in vc-region-history
    
    * lisp/vc/vc.el (vc-region-history): Ensure buffer is
    version-controlled.  Otherwise if a user runs it in a
    non-version-controlled buffer, they get the error:
    
      Cannot open load file: No such file or directory, vc-nil
---
 lisp/vc/vc.el | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lisp/vc/vc.el b/lisp/vc/vc.el
index 211fedd..b159991 100644
--- a/lisp/vc/vc.el
+++ b/lisp/vc/vc.el
@@ -2422,6 +2422,8 @@ When called interactively with a prefix argument, prompt 
for REMOTE-LOCATION."
          (file buffer-file-name)
          (backend (vc-backend file))
          (buf (get-buffer-create "*VC-history*")))
+    (unless backend
+      (error "Buffer is not version controlled"))
     (with-current-buffer buf
       (setq-local vc-log-view-type 'long))
     (vc-call region-history file buf lfrom lto)