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When conflicts have been previously detected ensure that they can be resolved (#19247)
There is yet another problem with conflicted files not being reset when the test patch resolves them. This PR adjusts the code for checkConflicts to reset the ConflictedFiles field immediately at the top. It also adds a reset to conflictedFiles for the manuallyMerged and a shortcut for the empty status in protectedfiles. Signed-off-by: Andrew Thornton <art27@cantab.net>
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@ -424,8 +424,11 @@ func (pr *PullRequest) SetMerged() (bool, error) {
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return false, fmt.Errorf("Issue.changeStatus: %v", err)
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return false, fmt.Errorf("Issue.changeStatus: %v", err)
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}
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}
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// reset the conflicted files as there cannot be any if we're merged
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pr.ConflictedFiles = []string{}
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// We need to save all of the data used to compute this merge as it may have already been changed by TestPatch. FIXME: need to set some state to prevent TestPatch from running whilst we are merging.
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// We need to save all of the data used to compute this merge as it may have already been changed by TestPatch. FIXME: need to set some state to prevent TestPatch from running whilst we are merging.
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if _, err := sess.Where("id = ?", pr.ID).Cols("has_merged, status, merge_base, merged_commit_id, merger_id, merged_unix").Update(pr); err != nil {
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if _, err := sess.Where("id = ?", pr.ID).Cols("has_merged, status, merge_base, merged_commit_id, merger_id, merged_unix, conflicted_files").Update(pr); err != nil {
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return false, fmt.Errorf("Failed to update pr[%d]: %v", pr.ID, err)
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return false, fmt.Errorf("Failed to update pr[%d]: %v", pr.ID, err)
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}
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}
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@ -270,6 +270,10 @@ func AttemptThreeWayMerge(ctx context.Context, gitPath string, gitRepo *git.Repo
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}
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}
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func checkConflicts(ctx context.Context, pr *models.PullRequest, gitRepo *git.Repository, tmpBasePath string) (bool, error) {
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func checkConflicts(ctx context.Context, pr *models.PullRequest, gitRepo *git.Repository, tmpBasePath string) (bool, error) {
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// 1. checkConflicts resets the conflict status - therefore - reset the conflict status
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pr.ConflictedFiles = nil
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// 2. AttemptThreeWayMerge first - this is much quicker than plain patch to base
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description := fmt.Sprintf("PR[%d] %s/%s#%d", pr.ID, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, pr.Index)
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description := fmt.Sprintf("PR[%d] %s/%s#%d", pr.ID, pr.BaseRepo.OwnerName, pr.BaseRepo.Name, pr.Index)
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conflict, _, err := AttemptThreeWayMerge(ctx,
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conflict, _, err := AttemptThreeWayMerge(ctx,
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tmpBasePath, gitRepo, pr.MergeBase, "base", "tracking", description)
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tmpBasePath, gitRepo, pr.MergeBase, "base", "tracking", description)
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@ -290,16 +294,14 @@ func checkConflicts(ctx context.Context, pr *models.PullRequest, gitRepo *git.Re
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if treeHash == baseTree.ID.String() {
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if treeHash == baseTree.ID.String() {
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log.Debug("PullRequest[%d]: Patch is empty - ignoring", pr.ID)
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log.Debug("PullRequest[%d]: Patch is empty - ignoring", pr.ID)
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pr.Status = models.PullRequestStatusEmpty
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pr.Status = models.PullRequestStatusEmpty
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pr.ConflictedFiles = []string{}
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pr.ChangedProtectedFiles = []string{}
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}
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}
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return false, nil
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return false, nil
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}
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}
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// OK read-tree has failed so we need to try a different thing - this might actually succeed where the above fails due to whitespace handling.
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// 3. OK read-tree has failed so we need to try a different thing - this might actually succeed where the above fails due to whitespace handling.
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// 1. Create a plain patch from head to base
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// 3a. Create a plain patch from head to base
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tmpPatchFile, err := os.CreateTemp("", "patch")
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tmpPatchFile, err := os.CreateTemp("", "patch")
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if err != nil {
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if err != nil {
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log.Error("Unable to create temporary patch file! Error: %v", err)
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log.Error("Unable to create temporary patch file! Error: %v", err)
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@ -322,34 +324,29 @@ func checkConflicts(ctx context.Context, pr *models.PullRequest, gitRepo *git.Re
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patchPath := tmpPatchFile.Name()
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patchPath := tmpPatchFile.Name()
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tmpPatchFile.Close()
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tmpPatchFile.Close()
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// 1a. if the size of that patch is 0 - there can be no conflicts!
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// 3b. if the size of that patch is 0 - there can be no conflicts!
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if stat.Size() == 0 {
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if stat.Size() == 0 {
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log.Debug("PullRequest[%d]: Patch is empty - ignoring", pr.ID)
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log.Debug("PullRequest[%d]: Patch is empty - ignoring", pr.ID)
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pr.Status = models.PullRequestStatusEmpty
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pr.Status = models.PullRequestStatusEmpty
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pr.ConflictedFiles = []string{}
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pr.ChangedProtectedFiles = []string{}
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return false, nil
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return false, nil
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}
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}
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log.Trace("PullRequest[%d].testPatch (patchPath): %s", pr.ID, patchPath)
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log.Trace("PullRequest[%d].testPatch (patchPath): %s", pr.ID, patchPath)
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// 2. preset the pr.Status as checking (this is not save at present)
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// 4. Read the base branch in to the index of the temporary repository
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pr.Status = models.PullRequestStatusChecking
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// 3. Read the base branch in to the index of the temporary repository
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_, err = git.NewCommand(gitRepo.Ctx, "read-tree", "base").RunInDir(tmpBasePath)
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_, err = git.NewCommand(gitRepo.Ctx, "read-tree", "base").RunInDir(tmpBasePath)
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if err != nil {
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if err != nil {
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return false, fmt.Errorf("git read-tree %s: %v", pr.BaseBranch, err)
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return false, fmt.Errorf("git read-tree %s: %v", pr.BaseBranch, err)
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}
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}
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// 4. Now get the pull request configuration to check if we need to ignore whitespace
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// 5. Now get the pull request configuration to check if we need to ignore whitespace
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prUnit, err := pr.BaseRepo.GetUnit(unit.TypePullRequests)
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prUnit, err := pr.BaseRepo.GetUnit(unit.TypePullRequests)
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if err != nil {
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if err != nil {
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return false, err
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return false, err
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}
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}
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prConfig := prUnit.PullRequestsConfig()
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prConfig := prUnit.PullRequestsConfig()
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// 5. Prepare the arguments to apply the patch against the index
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// 6. Prepare the arguments to apply the patch against the index
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args := []string{"apply", "--check", "--cached"}
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args := []string{"apply", "--check", "--cached"}
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if prConfig.IgnoreWhitespaceConflicts {
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if prConfig.IgnoreWhitespaceConflicts {
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args = append(args, "--ignore-whitespace")
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args = append(args, "--ignore-whitespace")
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@ -360,9 +357,8 @@ func checkConflicts(ctx context.Context, pr *models.PullRequest, gitRepo *git.Re
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is3way = true
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is3way = true
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}
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}
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args = append(args, patchPath)
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args = append(args, patchPath)
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pr.ConflictedFiles = make([]string, 0, 5)
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// 6. Prep the pipe:
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// 7. Prep the pipe:
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// - Here we could do the equivalent of:
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// - Here we could do the equivalent of:
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// `git apply --check --cached patch_file > conflicts`
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// `git apply --check --cached patch_file > conflicts`
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// Then iterate through the conflicts. However, that means storing all the conflicts
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// Then iterate through the conflicts. However, that means storing all the conflicts
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@ -380,7 +376,7 @@ func checkConflicts(ctx context.Context, pr *models.PullRequest, gitRepo *git.Re
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_ = stderrWriter.Close()
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_ = stderrWriter.Close()
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}()
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}()
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// 7. Run the check command
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// 8. Run the check command
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conflict = false
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conflict = false
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err = git.NewCommand(gitRepo.Ctx, args...).
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err = git.NewCommand(gitRepo.Ctx, args...).
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RunWithContext(&git.RunContext{
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RunWithContext(&git.RunContext{
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@ -448,7 +444,7 @@ func checkConflicts(ctx context.Context, pr *models.PullRequest, gitRepo *git.Re
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},
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},
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})
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})
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// 8. If there is a conflict the `git apply` command will return a non-zero error code - so there will be a positive error.
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// 9. If there is a conflict the `git apply` command will return a non-zero error code - so there will be a positive error.
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if err != nil {
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if err != nil {
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if conflict {
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if conflict {
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pr.Status = models.PullRequestStatusConflict
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pr.Status = models.PullRequestStatusConflict
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@ -518,6 +514,11 @@ func CheckUnprotectedFiles(repo *git.Repository, oldCommitID, newCommitID string
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// checkPullFilesProtection check if pr changed protected files and save results
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// checkPullFilesProtection check if pr changed protected files and save results
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func checkPullFilesProtection(pr *models.PullRequest, gitRepo *git.Repository) error {
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func checkPullFilesProtection(pr *models.PullRequest, gitRepo *git.Repository) error {
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if pr.Status == models.PullRequestStatusEmpty {
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pr.ChangedProtectedFiles = nil
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return nil
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}
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if err := pr.LoadProtectedBranch(); err != nil {
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if err := pr.LoadProtectedBranch(); err != nil {
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return err
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return err
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}
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}
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