[Bug]: Unquantified wildcard expression does not work for empty strings

[sabihoshi]

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Description

Unquantified wildcards can no longer be optional, before a component interaction with [ComponentInteraction("foo:*")] would be able to capture empty strings, such as the id foo:.

Now it needs to have at least one character for it to work. i.e. foo:bar.

A workaround for this is using a quantified count of 0 or more, i.e. [ComponentInteraction("foo:{0,}")]

Version

3.18.0

Working Version

Before 3.9.0

Logs

N/A

Sample

using System.Threading.Tasks;
using Discord;
using Discord.Interactions;
using Discord.WebSocket;

// This module demonstrates the wildcard matching behavior for component interactions.
public class SampleModule : InteractionModuleBase<SocketInteractionContext>
{
    // This command creates a select menu with a custom ID that has an empty segment.
    // The custom ID will be "test-menu:123:", where the part after the last colon is empty.
    [SlashCommand("test", "Sends a test menu.")]
    public async Task SendTestMenu()
    {
        var menu = new SelectMenuBuilder()
            .WithCustomId("test-menu:123:") // Note the empty string after the last colon.
            .WithPlaceholder("Select an option")
            .AddOption("Option 1", "opt1");

        var components = new ComponentBuilder().WithSelectMenu(menu);

        await RespondAsync("This menu demonstrates the wildcard issue.", components: components.Build());
    }

    /*
     * This handler will NOT be triggered.
     * The unquantified wildcard `*` for the `emptySegment` parameter requires at least one character.
     * Since the custom ID is "test-menu:123:", the last segment is empty, and this pattern will not match.
    */
    [ComponentInteraction("test-menu:*:*")]
    public async Task HandleMenu_Broken(string userId, string emptySegment, string[] selections)
    {
        // This code will not be reached.
        await RespondAsync($"Broken handler triggered with user ID: {userId} and empty segment: '{emptySegment}'.");
    }

    /*
     * This is the corrected handler.
     * The quantified wildcard `{0,}` allows the `emptySegment` to match zero or more characters.
     * This pattern will correctly match the custom ID "test-menu:123:".
    */
    [ComponentInteraction("test-menu:*:{0,}")]
    public async Task HandleMenu_Fixed(string userId, string emptySegment, string[] selections)
    {
        // This code will be executed.
        await RespondAsync($"Fixed handler triggered. User ID: {userId}, Empty Segment: '{emptySegment}', Selection: {selections[0]}");
    }
}

Packages

Discord.NET 3.18.0

Environment

• OS: Windows
• Arch: x64
• SDK: .NET SDK 9.0