Merge branch 'jn/cherry-revert-message-clean-up'

* jn/cherry-revert-message-clean-up:
tests: fix syntax error in "Use advise() for hints" test
cherry-pick/revert: Use advise() for hints
cherry-pick/revert: Use error() for failure message
Introduce advise() to print hints
Eliminate “Finished cherry-pick/revert” message
t3508: add check_head_differs_from() helper function and use it
revert: improve success message by adding abbreviated commit sha1
revert: don't print "Finished one cherry-pick." if commit failed
revert: refactor commit code into a new run_git_commit() function
revert: report success when using option --strategy

diff --cc builtin/revert.c
Simple merge

diff --cc git-rebase--interactive.sh
index 4d14b077d22ac030956fa686b637ac86763f05c0,8f6876d3019939c6f4c4f5433abaa5fb7e43151f..eb2dff55f81b6726340ce26db93bb161087a4857
--- 1/git-rebase--interactive.sh
--- 2/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@@ -111,12 -111,11 +111,12 @@@ VERBOSE
  OK_TO_SKIP_PRE_REBASE=
  REBASE_ROOT=
  AUTOSQUASH=
 +test "$(git config --bool rebase.autosquash)" = "true" && AUTOSQUASH=t
  NEVER_FF=
  
- GIT_CHERRY_PICK_HELP="  After resolving the conflicts,
- mark the corrected paths with 'git add <paths>', and
- run 'git rebase --continue'"
+ GIT_CHERRY_PICK_HELP="\
+ hint: after resolving the conflicts, mark the corrected paths
+ hint: with 'git add <paths>' and run 'git rebase --continue'"
  export GIT_CHERRY_PICK_HELP
  
  warn () {