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Description
Is your feature request related to a problem? Please describe.
The static blog platform I'm using Pelican (https://getpelican.com) requires tags be represented in CSV format which Frontmatter doesn't do. YOu can enter multiple tags separated by commas but they're always presented as one-per-line in the MD file.
Describe the solution you'd like
For any field where multiple values are permitted, a new flag "asCsv" or similar could be added so that field is always rendered in the MD file as a comma delimited list.
Describe alternatives you've considered
I'm not sure any alternative is available. I've looked at docs and no alternate solution appears to pop out .
See https://docs.getpelican.com/en/latest/content.html for more info