Configure location of intermediate md files generated from qmd

I want to manage quarto source files with .md extension to allow arbitrary Markdown tools to detect and process these files. In the end .qmd is Markdown but with additional elements. As discussed at https://github.com/quarto-dev/quarto-cli/discussions/3715#discussioncomment-9045723_ quarto

• complains when fed with .md files containing computable elememts
• transforms .qmd to .md containing results of evaluation

This is why you may have issue about already exist error if you have .md with same name as .qmd.

Can the transformed result be put in a custom (keep-md: true) or temporary (keep-md: false) directory to not clash with an existing .md file of same name?

Start with the linked discussion and trace Quarto’s rendering and intermediate Markdown output handling; the issue does not name specific files or tests. Determine how keep-md true and false should select custom or temporary locations, then verify that generated results no longer clash with existing .md sources while rendering still produces the expected output.