How to combine multiple strings into a single prompt?

I am new to Comfy and trying to create a workflow where I output several images. There is a “base prompt” which is the same for all images (prompt: a description of what some characters are doing), and then “style prompts” which are different for each image.

First, I created a positive prompt for each image, and then I cut-and-paste the base prompt and then manually added the style prompt. This works, but I want to change the base prompt each time, and it’s tedious to cut-and-paste the same base prompt several times. So I tried to find a node to combine the prompts.

First I looking at Conditioning (Combine), but this does some additional processing according to the docs. I only want to add the strings together, so I kept looking.

I also tried Conditioning (Concat)-- note, I couldn’t seem to find a page for this one in the documentation-- but this does not seem to only concat the strings (see this reddit comment, for example. Some additional processing seems to be happening.

So what should I do in my case? I have two prompts per image I want to combine (a base prompt that never changes and a style prompt that is different for each image), and I want to merge the text strings together, but I don’t want any additional processing.

I suggest installing a suite of custom nodes such as GitHub - WASasquatch/was-node-suite-comfyui: An extensive node suite for ComfyUI with over 210 new nodes

It contains a node « Text Concatenate » that does what you want.