The App will crash when DescriptionAttribute contains middle bracket '[]'

[riyueniao]

Describe the bug When DescriptionAttribute contains a middle bracket, the app will crash with the following exception when printing the usage message.

Unhandled exception. System.InvalidOperationException: Encountered malformed markup tag at position 56.
   at Spectre.Console.MarkupTokenizer.ReadMarkup() in /_/src/Spectre.Console/Internal/Text/Markup/MarkupTokenizer.cs:line 192
   at Spectre.Console.MarkupTokenizer.MoveNext() in /_/src/Spectre.Console/Internal/Text/Markup/MarkupTokenizer.cs:line 27
   at Spectre.Console.MarkupParser.Parse(String text, Style style) in /_/src/Spectre.Console/Internal/Text/Markup/MarkupParser.cs:line 19
   at Spectre.Console.Markup..ctor(String text, Style style) in /_/src/Spectre.Console/Widgets/Markup.cs:line 42
   at Spectre.Console.Cli.Composer.Measure(RenderOptions options, Int32 maxWidth) in /_/src/Spectre.Console.Cli/Internal/Composer.cs:line 123
   at Spectre.Console.TableMeasurer.MeasureColumn(TableColumn column, Int32 maxWidth) in /_/src/Spectre.Console/Widgets/Table/TableMeasurer.cs:line 107
   at Spectre.Console.TableMeasurer.<>c__DisplayClass7_0.<CalculateColumnWidths>b__0(TableColumn column) in /_/src/Spectre.Console/Widgets/Table/TableMeasurer.cs:line 57
   at System.Linq.Enumerable.SelectListIterator`2.Fill(ReadOnlySpan`1 source, Span`1 destination, Func`2 func)
   at System.Linq.Enumerable.SelectListIterator`2.ToArray()
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at Spectre.Console.TableMeasurer.CalculateColumnWidths(Int32 maxWidth) in /_/src/Spectre.Console/Widgets/Table/TableMeasurer.cs:line 57
   at Spectre.Console.Table.Render(RenderOptions options, Int32 maxWidth) in /_/src/Spectre.Console/Widgets/Table/Table.cs:line 140
   at Spectre.Console.Rendering.Renderable.Spectre.Console.Rendering.IRenderable.Render(RenderOptions options, Int32 maxWidth) in /_/src/Spectre.Console/Rendering/Renderable.cs:line 19
   at Spectre.Console.Rendering.JustInTimeRenderable.Render(RenderOptions context, Int32 width) in /_/src/Spectre.Console/Rendering/JustInTimeRenderable.cs:line 21
   at Spectre.Console.Rendering.Renderable.Spectre.Console.Rendering.IRenderable.Render(RenderOptions options, Int32 maxWidth) in /_/src/Spectre.Console/Rendering/Renderable.cs:line 19
   at Spectre.Console.RenderableExtensions.GetSegments(IAnsiConsole console, RenderOptions options, IEnumerable`1 renderables) in /_/src/Spectre.Console/Extensions/RenderableExtensions.cs:line 37
   at Spectre.Console.RenderableExtensions.GetSegments(IRenderable renderable, IAnsiConsole console) in /_/src/Spectre.Console/Extensions/RenderableExtensions.cs:line 29
   at Spectre.Console.AnsiBuilder.Build(IAnsiConsole console, IRenderable renderable) in /_/src/Spectre.Console/Internal/Backends/Ansi/AnsiBuilder.cs:line 17
   at Spectre.Console.AnsiConsoleBackend.Write(IRenderable renderable) in /_/src/Spectre.Console/Internal/Backends/Ansi/AnsiConsoleBackend.cs:line 30
   at Spectre.Console.AnsiConsoleFacade.Write(IRenderable renderable) in /_/src/Spectre.Console/Internal/Backends/AnsiConsoleFacade.cs:line 40
   at Spectre.Console.Cli.AnsiConsoleExtensions.SafeRender(IAnsiConsole console, IEnumerable`1 renderables) in /_/src/Spectre.Console.Cli/Internal/Extensions/AnsiConsoleExtensions.cs:line 33
   at Spectre.Console.Cli.CommandExecutor.Execute(IConfiguration configuration, IEnumerable`1 args) in /_/src/Spectre.Console.Cli/Internal/CommandExecutor.cs:line 80
   at Spectre.Console.Cli.CommandApp.RunAsync(IEnumerable`1 args) in /_/src/Spectre.Console.Cli/CommandApp.cs:line 84
   at Spectre.Console.Cli.CommandApp.Run(IEnumerable`1 args) in /_/src/Spectre.Console.Cli/CommandApp.cs:line 58

To Reproduce

[CommandOption("--some-nums <SomeNumbers>")]
[Description("The numbers to use. Default is [1,2,3,4].")]
public int[] SomeNumbers { get; set; } = [1,2,3,4];

Expected behavior No crash happened after adding '[' in the description message. Or error with a more user-friendly message.

[patriksvensson]

Not a bug since this is the expected behavior. Changed this to a feature request to provide a better error message.