Fix missing format completion in cb list

CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- `cb list` completion to include `--format`.
+
 ## [3.5.1] - 2024-05-09
 ### Fixed
 - `cb config-param set` issue truncating values with multiple `=` characters.

spec/cb/completion_spec.cr

@@ -379,12 +379,13 @@ Spectator.describe CB::Completion do
   it "list" do
     result = parse("cb list ")
     expect(result).to have_option "--team"
+    expect(result).to have_option "--format"
 
     result = parse("cb list --team ")
     expect(result).to eq expected_team_suggestion
 
-    result = parse("cb list --team abc ")
-    expect(result).to eq [] of String
+    result = parse("cb list --format ")
+    expect(result).to eq ["table", "tree"]
   end
 
   it "logdest" do

src/cb/completion.cr

@@ -280,8 +280,13 @@ class CB::Completion
       return team_suggestions
     end
 
+    if last_arg?("--format")
+      return [CB::Format::Table, CB::Format::Tree].map(&.to_s.downcase)
+    end
+
     suggest = [] of String
     suggest << "--team\tteam id" unless has_full_flag? :team
+    suggest << "--format\tchoose output format" unless has_full_flag? :format
     suggest
   end