<!-- Please provide a clear and concise description of what you'd like to see added to Hydrus. Before opening a request, please check if another issue describing the same feature already exists. Note that the list of things yet to be added to Hydrus is already very long and that any feature requests will be prioritized based on how many people want to see it. --> It would be nice to be able to use wildcards (`*`) in the file search API. This would especially simplify the logic in the Hydrus Web comics feature.