ComfyUI Stable Wildcards

Overview

ComfyUI has an amazing feature that saves the workflow to reproduce an image in the image itself. In theory, you can import the workflow and reproduce the exact image. Unfortunately, this does not work with wildcards. The goal of this node is to implement wildcard support using a seed to stabilize the output to allow greater reproducibility.

Use

Wildcards

Wildcards are supported via brackets and pipes.

Example:

A painting of a {boat|fish} in the {sea|lake}

The first pair of words will randomly select boat or fish, and the second will either be sea or lake. The following is a list of possible random output using the above prompt:

• A painting of a boat in the sea
• A painting of a boat in the lake
• A painting of a fish in the sea
• A painting of a fish in the lake

Note: Everything including the brackets are replaced with the final word. Include spaces around your {} to prevent words from running together, or use it to modify words. Ex: {cat|dog}fish outputs catfish or dogfish.

Node

The node requires three inputs

1. a string - Your prompt
2. a seed - This is what makes your prompt reproducible
3. a version - Allows for future changes to not break backwards compatibility

The node has one output

1. a string - Your final prompt with wildcards processed

Bonus Node

An additional node is included that disabled the default dynamicPrompt behavior of multiline inputs.

Opinions

Below are my opinions and as such will probably not be changed.

CLIP

Many other implementations combine this feature with the CLIP node. I chose not to do this to keep the wildcard code and CLIP implementation separate and more re-usable.

Wildcard Files

Probably won't be implemented. Files are external to the workflow, so there is no guarantee that (1) the file exists on another system and (2) the file content has not been modified. File wildcards are not an appropriate approach if you are looking to create repeatable output.