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Somewhat more usefully, e.g. foo!(*~) would give all files that start with foo, but do not end with a ~. Though one might try to use foo*!(~), which doesn't work since the * matches the ~, and the last !(~) only sees an empty string at the end, which it doesn't reject.
– ilkkachu
Commented Nov 8, 2023 at 7:36

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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
for linebreak add 2 spaces at end
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indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
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[example](https://example.com)
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