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Consider quotes inside format-specs when choosing the quotes for an f-string#14493

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MichaReiser merged 4 commits into
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micha/f-string-expressions-format-spec
Nov 22, 2024
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Consider quotes inside format-specs when choosing the quotes for an f-string#14493
MichaReiser merged 4 commits into
mainfrom
micha/f-string-expressions-format-spec

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@MichaReiser

@MichaReiser MichaReiser commented Nov 20, 2024

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Summary

Fixes #13935

Test Plan

Added test

@MichaReiser MichaReiser added formatter Related to the formatter preview Related to preview mode features labels Nov 20, 2024
@MichaReiser MichaReiser force-pushed the micha/f-string-expressions-format-spec branch from 68ca92e to f681076 Compare November 20, 2024 15:50
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ruff-ecosystem results

Formatter (stable)

✅ ecosystem check detected no format changes.

Formatter (preview)

✅ ecosystem check detected no format changes.

@MichaReiser

MichaReiser commented Nov 20, 2024

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Hmm, this now leads to invalid syntax for "aaa " f'{1=: "abcd {'aa'}}'

@MichaReiser

MichaReiser commented Nov 20, 2024

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Okay, this is a pre-existing issue, but not one that gets fixed by this PR.

f'{1=: "abcd {'aa'} \'\'}'

We can't change the outer quotes because the format-spec quotes then become the "closing" quotes of the entire-fstring (which they shouldn't). That means we have to preserve the quotes if:

  • an expression has a format spec that contains the current quote character
  • the expression uses debug text

@MichaReiser

MichaReiser commented Nov 20, 2024

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I'll do another review myself of the code changes with a fresh mind tomorrow morning but I think this is mostly correct.

MichaReiser
MichaReiser commented Nov 20, 2024
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Comment thread crates/ruff_python_formatter/src/string/normalize.rs Outdated
dhruvmanila
dhruvmanila reviewed Nov 21, 2024
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Comment thread crates/ruff_python_formatter/src/string/normalize.rs Outdated
Comment thread crates/ruff_python_formatter/src/string/normalize.rs Outdated
Comment thread crates/ruff_python_formatter/src/string/normalize.rs
Comment thread crates/ruff_python_formatter/src/string/implicit.rs
Comment on lines +249 to +250
let quote = if let Some(quote) = preserve_quotes_requirement {
quote

@dhruvmanila dhruvmanila Nov 21, 2024

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The only change here is the addition of this condition to return the quote that needs to be preserved? I'm curious to know why was this condition not present before this? It seems like it should've been present.

@MichaReiser MichaReiser Nov 21, 2024

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Not 100%. I would have to remind myself of how the pre 312 fstring formatting works again. It might also just be that we were missing a test.

@MichaReiser MichaReiser force-pushed the micha/f-string-expressions-format-spec branch from c402856 to 2e3416e Compare November 22, 2024 12:39
@MichaReiser MichaReiser enabled auto-merge (squash) November 22, 2024 12:39
@MichaReiser MichaReiser merged commit b80de52 into main Nov 22, 2024
@MichaReiser MichaReiser deleted the micha/f-string-expressions-format-spec branch November 22, 2024 12:43
@MichaReiser MichaReiser mentioned this pull request Nov 26, 2024
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@BrewTestBot BrewTestBot mentioned this pull request Nov 29, 2024
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f-string formatting: Consider format specs when choosing the preferred quotes

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@MichaReiser @dhruvmanila