Remove extra process call from vc-hg-registered

Prefer vc-state to benefit from its caching (bug#44534)

This same technique is used in vc-git.el,
per commit 2018-06-28 "Remove extra process call from vc-git-find-file-hook"
93c41ce6aa64b14fc9bd7bdd0d909915a79191cd.

* lisp/vc/vc-hg.el (vc-hg-registered): Use vc-state rather than vc-hg-state.

diff --git a/lisp/vc/vc-hg.el b/lisp/vc/vc-hg.el
index cb0657e70a0aabc0230930c0750343103ff79d8a..cacdee2226341f02ff981c48e1ed4459e80ef37c 100644 (file)
--- a/lisp/vc/vc-hg.el
+++ b/lisp/vc/vc-hg.el
@@ -222,7 +222,7 @@ If `ask', you will be prompted for a branch type."
 (defun vc-hg-registered (file)
   "Return non-nil if FILE is registered with hg."
   (when (vc-hg-root file)           ; short cut
-    (let ((state (vc-hg-state file)))  ; expensive
+    (let ((state (vc-state file 'Hg)))  ; expensive
       (and state (not (memq state '(ignored unregistered)))))))
 
 (defun vc-hg-state (file)