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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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-rmay not be available in all versions ofsed, in which case you'd have to escape the brackets on the left-hand side of the command. So POSIX-ly, this would be:sed -e 's/=~\(.*\)$/match(\1)/' file.{}to do what you want? Can I do this sort of stuff with thesed -isame file approach?{}, so, yes, you can use it to group various commands for the same address (in your case the regular expression is the address, it could also be a line number or a range with a start and end separated by a,), and the-iflag does not alter the script behavior, you can mix it with any sed script.