Check for conflicts after reverting a commit

This way we get the usual menu for viewing the conflicts or aborting, like for
rebases.

Author: stefanhaller

Diff for: pkg/gui/controllers/helpers/merge_and_rebase_helper.go

@@ -138,6 +138,8 @@ var conflictStrings = []string{
 	"fix conflicts",
 	"Resolve all conflicts manually",
 	"Merge conflict in file",
+	"hint: after resolving the conflicts",
+	"CONFLICT (content):",
 }
 
 func isMergeConflictErr(errStr string) bool {

Diff for: pkg/gui/controllers/local_commits_controller.go

@@ -868,7 +868,8 @@ func (self *LocalCommitsController) revert(commit *models.Commit) error {
 		HandleConfirm: func() error {
 			self.c.LogAction(self.c.Tr.Actions.RevertCommit)
 			return self.c.WithWaitingStatusSync(self.c.Tr.RevertingStatus, func() error {
-				if err := self.c.Git().Commit.Revert(commit.Hash); err != nil {
+				result := self.c.Git().Commit.Revert(commit.Hash)
+				if err := self.c.Helpers().MergeAndRebase.CheckMergeOrRebase(result); err != nil {
 					return err
 				}
 				return self.afterRevertCommit()

Diff for: pkg/integration/tests/commit/revert_with_conflict_single_commit.go

@@ -33,11 +33,9 @@ var RevertWithConflictSingleCommit = NewIntegrationTest(NewIntegrationTestArgs{
 					Title(Equals("Revert commit")).
 					Content(MatchesRegexp(`Are you sure you want to revert \w+?`)).
 					Confirm()
-				t.ExpectPopup().Alert().
-					Title(Equals("Error")).
-					// The exact error message is different on different git versions,
-					// but they all contain the word 'conflict' somewhere.
-					Content(Contains("conflict")).
+				t.ExpectPopup().Menu().
+					Title(Equals("Conflicts!")).
+					Select(Contains("View conflicts")).
 					Confirm()
 			}).
 			Lines(
@@ -56,7 +54,7 @@ var RevertWithConflictSingleCommit = NewIntegrationTest(NewIntegrationTestArgs{
 		t.Views().Options().Content(Contains("View revert options: m"))
 		t.Views().Information().Content(Contains("Reverting (Reset)"))
 
-		t.Views().Files().Focus().
+		t.Views().Files().IsFocused().
 			Lines(
 				Contains("UU myfile").IsSelected(),
 			).