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List pattern is not correctly formatted in the first case of a switch expression #72196

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meziantou opened this issue Feb 21, 2024 · 1 comment · May be fixed by #72269 or #75953
Open

List pattern is not correctly formatted in the first case of a switch expression #72196

meziantou opened this issue Feb 21, 2024 · 1 comment · May be fixed by #72269 or #75953
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Area-IDE Bug help wanted The issue is "up for grabs" - add a comment if you are interested in working on it
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@meziantou
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Version Used: '4.10.0-1.24081.13 (fa72fa6)' - Visual Studio 17.10.0 Preview 1.0

Language version: 12.0

Steps to Reproduce:

Format the following document in Visual Studio:

_ = Array.Empty<string>() switch
{
    [] => 0,
    _ => 1,
};

The list pattern is push to the left:

_ = Array.Empty<string>() switch
{
[] => 0,
    _ => 1,
};

It seems specific to the list pattern. Other patterns are correctly aligned.

Expected Behavior:

The list pattern stays at the same location.

Actual Behavior:

The list pattern is pushed to the left
@dotnet-issue-labeler dotnet-issue-labeler bot added Area-Compilers untriaged Issues and PRs which have not yet been triaged by a lead labels Feb 21, 2024
@SamuelBittmann
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We have the same issue since .NET SDK 8.0.200. IDE0055 is reported in this case. One additional observation that I have made: No issue is reported when the list of patterns does not start with a list expression, e.g.:

// For this code no warning is reported
var result2 = new int[] { 1, 2 } switch
{
    { Length: 0 } => "empty",
    [1] => "one",
    _ => "unknown"
};

Full repro: https://github.com/SamuelBittmann/ide0055_bug_repro

@CyrusNajmabadi CyrusNajmabadi added Bug help wanted The issue is "up for grabs" - add a comment if you are interested in working on it Area-IDE and removed Area-Compilers untriaged Issues and PRs which have not yet been triaged by a lead labels Feb 21, 2024
@CyrusNajmabadi CyrusNajmabadi added this to the Backlog milestone Feb 21, 2024
victor-pogor added a commit to victor-pogor/roslyn that referenced this issue Feb 25, 2024
@victor-pogor
Fixed List pattern is not correctly formatted in the first arm of a s…
cefea73 
…witch expression

fixes dotnet#72196
@victor-pogor victor-pogor linked a pull request Feb 25, 2024 that will close this issue
Open
victor-pogor added a commit to victor-pogor/roslyn that referenced this issue Feb 26, 2024
@victor-pogor
Fixed List pattern is not correctly formatted in the first arm of a s…
b385a69 
…witch expression

fixes dotnet#72196
@KyouyamaKazusa0805 KyouyamaKazusa0805 mentioned this issue Mar 9, 2024
Closed
@koenigst koenigst mentioned this issue Apr 10, 2024
Closed
@github-project-automation github-project-automation bot moved this to InQueue in Small Fixes Aug 28, 2024
obonn1 pushed a commit to obonn1/roslyn that referenced this issue Nov 18, 2024
Fix switch indentation for list patterns
d575e61 
- fixes dotnet#72196
@obonn1 obonn1 linked a pull request Nov 18, 2024 that will close this issue
Open
obonn1 pushed a commit to obonn1/roslyn that referenced this issue Nov 20, 2024
Fix switch indentation for list patterns
33c85a2 
- fixes dotnet#72196
obonn1 pushed a commit to obonn1/roslyn that referenced this issue Nov 20, 2024
Fix switch indentation for list patterns
cd5a93b 
- fixes dotnet#72196
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Area-IDE Bug help wanted The issue is "up for grabs" - add a comment if you are interested in working on it
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Status: InQueue
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3 participants
@meziantou @CyrusNajmabadi @SamuelBittmann