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create code fences with backticks ` or tildes ~
```
like so
``` -
add language identifier to highlight code
```python
def function(foo):
print(foo)
``` - put returns between paragraphs
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sedwould be a poor choice of tool for doing this. See mikefarah.gitbook.io/yq for how to install/use a yaml editor and if you can't installyqfor some reason then you'd useawk.Nin your sed code to$!N. The lonely N is causing the last line to not be printed. Take care to backslash it since you are inside double quotes. For a robust way lookat my solution using python. I like your approach of combining N with range.