draft: polish - Change conflict hint if decendants resolves conflict.

* If working commit has no conflicts:
  * If no parent has any conflicts: no message
  * If any parent has conflicts: "Conflict in parent is resolved in working copy"
* If working commit has conflicts:
  * if any decendants are conflict free: "Conflict fixed in <decendant_commit_id>"
  * if no decendants are conflict free: Print the existing message.

Fixes #4147

cli/src/commands/status.rs

@@ -92,20 +92,37 @@ pub(crate) fn cmd_status(
         }
 
         let wc_revset = RevsetExpression::commit(wc_commit.id().clone());
-        // Ancestors with conflicts, excluding the current working copy commit.
-        let ancestors_conflicts = workspace_command
-            .attach_revset_evaluator(
-                wc_revset
+
+        if !wc_commit.has_conflict()? {
+            let parent_is_conflicted = {
+                wc_commit
                     .parents()
-                    .ancestors()
-                    .filtered(RevsetFilterPredicate::HasConflict)
-                    .minus(&revset_util::parse_immutable_expression(
-                        &workspace_command.revset_parse_context(),
-                    )?),
-            )?
-            .evaluate_to_commit_ids()?
-            .collect();
-        workspace_command.report_repo_conflicts(formatter, repo, ancestors_conflicts)?;
+                    .any(|parent| parent.as_ref().unwrap().has_conflict().unwrap())
+            };
+
+            if parent_is_conflicted {
+                writeln!(
+                    formatter,
+                    "Conflict in parent commit has been resolved in working copy"
+                )?;
+            }
+        } else {
+            // Ancestors with conflicts, excluding the current working copy commit.
+            let ancestors_conflicts: Vec<_> = workspace_command
+                .attach_revset_evaluator(
+                    wc_revset
+                        .parents()
+                        .ancestors()
+                        .filtered(RevsetFilterPredicate::HasConflict)
+                        .minus(&revset_util::parse_immutable_expression(
+                            &workspace_command.revset_parse_context(),
+                        )?),
+                )?
+                .evaluate_to_commit_ids()?
+                .collect();
+
+            workspace_command.report_repo_conflicts(formatter, repo, ancestors_conflicts)?;
+        }
     } else {
         writeln!(formatter, "No working copy")?;
     }