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Fix ''' ""''' formatting (#7485)

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## Summary

`''' ""'''` is an edge case that was previously incorrectly formatted as
`""" """""`.

Fixes #7460

## Test Plan

Added regression test
This commit is contained in:
konsti 2023-09-18 12:28:15 +02:00 • committed by GitHub
parent 70ea49bf72
commit c4d85d6fb6
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3 changed files with 28 additions and 4 deletions
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20
crates/ruff_python_formatter/src/expression/string.rs
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@ -543,10 +543,21 @@ fn preferred_quotes(
// `""` or `''`
chars.next();
if chars.peek().copied() == Some(configured_quote_char) {
// `"""` or `'''`
chars.next();
uses_triple_quotes = true;
match chars.peek().copied() {
Some(c) if c == configured_quote_char => {
// `"""` or `'''`
chars.next();
uses_triple_quotes = true;
break;
}
Some(_) => {}
None => {
// Handle `''' ""'''`. At this point we have consumed both
// double quotes, so on the next iteration the iterator is empty
// and we'd miss the string ending with a preferred quote
uses_triple_quotes = true;
break;
}
}
}
Some(_) => {
@ -555,6 +566,7 @@ fn preferred_quotes(
None => {
// Trailing quote at the end of the comment
uses_triple_quotes = true;
break;
}
}
}