Why do the parameters in $attributes and prompts. yaml need to be concatenated with ' ' instead of: ","

[benzhangdragonplus]

file location：trainscripts/imagesliders/prompt_util.py
row 163-167：
copy_['target'] = att + ' ' + copy_['target']
copy_['positive'] = att + ' ' + copy_['positive']
copy_['neutral'] = att + ' ' + copy_['neutral']
copy_['unconditional'] = att + ' ' + copy_['unconditional']

Why do $attributes need to be concatenated with ' ' for all parameters?
Will this not be considered as the same set of prompt words as the following prompt words? Should ' ,' not be used for concatenation?

[rohitgandikota]

Hi, thanks for the question! I dont think we have looked into different ways to concatenate the attributes to the original prompts. This was a design choice to use ' ' instead of a ','

Please let us know if you have observed any significant performance improvements or changes when using a comma instead. Would be happy to integrate the change to the code