error CS1056: Unexpected character '−' with Regex on Mac #113077
Description
Description
Compilation error CS1056 on Mac when using GeneratedRegex with this regular expression:
[GeneratedRegex("(?>'[^']*'|\"[^\"]*\"|\\([^()]*(((?<open>\\()[^()]*)+((?<-open>\\))[^()]*)+)*(?(open)(?!))\\)|[^'\",])+", RegexOptions.IgnoreCase | RegexOptions.Compiled, "en")]
Reproduction Steps
On MacOS (Sonoma 14.4) with dotnet 9.0.200, create a minimal project and compile with dotnet build:
using System.Text.RegularExpressions;
namespace ConsoleApp1
{
internal partial class Program
{
[GeneratedRegex("(?>'[^']*'|\"[^\"]*\"|\\([^()]*(((?<open>\\()[^()]*)+((?<-open>\\))[^()]*)+)*(?(open)(?!))\\)|[^'\",])+", RegexOptions.IgnoreCase | RegexOptions.Compiled, "en")]
private static partial Regex FindColumnsPattern();
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
}
}Expected behavior
The program compiles
Actual behavior
The program does not compile and got this error
ConsoleApp1 failed with 1 error(s) (0,1s)
/Users/carlos.saito/tmp/weird-regex/ConsoleApp1/obj/Debug/net9.0/System.Text.RegularExpressions.Generator/System.Text.RegularExpressions.Generator.RegexGenerator/RegexGenerator.g.cs(409,78): error CS1056: Unexpected character '−'
Note: in the console message, the − in Unexpected character '−' is a minus sign which is not present in the source code
Regression?
No response
Known Workarounds
Removing the - in the regex capture group compiles, but it is a different expression:
- [GeneratedRegex("(?>'[^']*'|\"[^\"]*\"|\\([^()]*(((?<open>\\()[^()]*)+((?<-open>\\))[^()]*)+)*(?(open)(?!))\\)|[^'\",])+", RegexOptions.IgnoreCase | RegexOptions.Compiled, "en")]
+ [GeneratedRegex("(?>'[^']*'|\"[^\"]*\"|\\([^()]*(((?<open>\\()[^()]*)+((?<open>\\))[^()]*)+)*(?(open)(?!))\\)|[^'\",])+", RegexOptions.IgnoreCase | RegexOptions.Compiled, "en")]
^ hereConfiguration
$ dotnet --version
9.0.200
$ dotnet sdk check
.NET SDKs:
Version Status
------------------------
9.0.200 Up to date.
.NET Runtimes:
Name Version Status
------------------------------------------------------
Microsoft.AspNetCore.App 9.0.2 Up to date.
Microsoft.NETCore.App 9.0.2 Up to date.
Running on Mac OS 14.4
Other information
No response