* lisp/vc/vc.el (vc-log-search): New command (bug#36644).
* lisp/vc/vc-git.el (vc-git-log-search): New function. (vc-git-log-view-mode): Check vc-log-view-type for log-search.
* lisp/vc/vc-git.el (vc-git-log-search): New function. (vc-git-log-view-mode): Check vc-log-view-type for log-search.