Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

re = /(?:(?:\s+<PackageVersion Include="([^"]+)".*)|.*)/m str = '<Project> <!-- Workaround https://github.com/dependabot/dependabot-core/issues/8490 --> <!-- This file gets imported for out-of-tree test runs also where eng/Versions.props isn\'t available --> <Import Project="eng/Versions.props" Condition="\'$(MajorVersion)\' == \'\' and Exists(\'eng/Versions.props\')" /> <PropertyGroup> <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally> <TestcontainersPackageVersion>3.9.0</TestcontainersPackageVersion> </PropertyGroup> <ItemGroup> <!-- AWS SDK for .NET dependencies --> <PackageVersion Include="AWSSDK.CloudFormation" Version="3.7.308.18" /> <PackageVersion Include="AWSSDK.SQS" Version="3.7.301.26" /> <PackageVersion Include="AWSSDK.SimpleNotificationService" Version="3.7.301.61" /> <PackageVersion Include="AWSSDK.Core" Version="3.7.304.23" /> <PackageVersion Include="AWSSDK.Extensions.NETCore.Setup" Version="3.7.301" /> <PackageVersion Include="AWS.Messaging" Version="0.9.1" /> <PackageVersion Include="OpenTelemetry.Instrumentation.AWS" Version="1.1.0-beta.4" /> <PackageVersion Include="OpenTelemetry.Extensions.AWS" Version="1.3.0-beta.1" /> <!-- Azure SDK for .NET dependencies --> <PackageVersion Include="Azure.AI.OpenAI" Version="1.0.0-beta.17" /> <PackageVersion Include="Azure.Data.Tables" Version="12.8.3" /> <PackageVersion Include="Azure.Extensions.AspNetCore.Configuration.Secrets" Version="1.3.1" /> <PackageVersion Include="Azure.Identity" Version="1.12.0" /> <PackageVersion Include="Azure.Messaging.EventHubs.Processor" Version="5.11.3" /> <PackageVersion Include="Azure.Messaging.ServiceBus" Version="7.17.5" /> <PackageVersion Include="Azure.Search.Documents" Version="11.5.1" /> <PackageVersion Include="Azure.Messaging.WebPubSub" Version="1.3.0" /> <PackageVersion Include="Azure.Security.KeyVault.Secrets" Version="4.6.0" /> <PackageVersion Include="Azure.Storage.Blobs" Version="12.20.0" /> <PackageVersion Include="Azure.Storage.Queues" Version="12.18.0" /> <PackageVersion Include="Microsoft.Azure.AppConfiguration.AspNetCore" Version="7.2.0" /> <PackageVersion Include="Microsoft.Azure.Cosmos" Version="3.41.0" /> <PackageVersion Include="Microsoft.Azure.SignalR" Version="1.25.2" /> <PackageVersion Include="Microsoft.Extensions.Azure" Version="1.7.4" /> <!-- Azure Management SDK for .NET dependencies --> <PackageVersion Include="Azure.Provisioning" Version="0.3.0" /> <PackageVersion Include="Azure.Provisioning.AppConfiguration" Version="0.2.0" /> <PackageVersion Include="Azure.Provisioning.ApplicationInsights" Version="0.1.0" /> <PackageVersion Include="Azure.Provisioning.CognitiveServices" Version="0.2.0" /> <PackageVersion Include="Azure.Provisioning.CosmosDB" Version="0.1.0" /> <PackageVersion Include="Azure.Provisioning.EventHubs" Version="0.1.0" /> <PackageVersion Include="Azure.Provisioning.KeyVault" Version="0.2.0" /> <PackageVersion Include="Azure.Provisioning.OperationalInsights" Version="0.2.0" /> <PackageVersion Include="Azure.Provisioning.PostgreSql" Version="0.1.0" /> <PackageVersion Include="Azure.Provisioning.Redis" Version="0.2.0" /> <PackageVersion Include="Azure.Provisioning.Resources" Version="0.2.0" /> <PackageVersion Include="Azure.Provisioning.Search" Version="0.1.0" /> <PackageVersion Include="Azure.Provisioning.ServiceBus" Version="0.1.0" /> <PackageVersion Include="Azure.Provisioning.SignalR" Version="0.2.0" /> <PackageVersion Include="Azure.Provisioning.Sql" Version="0.1.0" /> <PackageVersion Include="Azure.Provisioning.Storage" Version="0.2.0" /> <PackageVersion Include="Azure.Provisioning.WebPubSub" Version="0.1.0-beta.1" /> <!-- ASP.NET Core dependencies --> <PackageVersion Include="Microsoft.AspNetCore.Authentication.Certificate" Version="$(MicrosoftAspNetCoreAuthenticationCertificatePackageVersion)" /> <PackageVersion Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="$(MicrosoftAspNetCoreAuthenticationOpenIdConnectPackageVersion)" /> <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="$(MicrosoftAspNetCoreOpenApiPackageVersion)" /> <PackageVersion Include="Microsoft.AspNetCore.OutputCaching.StackExchangeRedis" Version="$(MicrosoftAspNetCoreOutputCachingStackExchangeRedisPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Caching.StackExchangeRedis" Version="$(MicrosoftExtensionsCachingStackExchangeRedisPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore" Version="$(MicrosoftExtensionsDiagnosticsHealthChecksEntityFrameworkCorePackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Diagnostics.HealthChecks" Version="$(MicrosoftExtensionsDiagnosticsHealthChecksPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Features" Version="$(MicrosoftExtensionsFeaturesPackageVersion)" /> <!-- AspNetCore.HealthChecks dependencies (3rd party packages) --> <PackageVersion Include="AspNetCore.HealthChecks.Azure.Data.Tables" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.Azure.KeyVault.Secrets" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.Azure.Storage.Blobs" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.Azure.Storage.Queues" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.AzureServiceBus" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.Kafka" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.MongoDb" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.MySql" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.NpgSql" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.Rabbitmq" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.Redis" Version="8.0.1" /> <PackageVersion Include="AspNetCore.HealthChecks.SqlServer" Version="8.0.2" /> <!-- efcore dependencies --> <PackageVersion Include="Microsoft.EntityFrameworkCore.Cosmos" Version="$(MicrosoftEntityFrameworkCoreCosmosPackageVersion)" /> <PackageVersion Include="Microsoft.EntityFrameworkCore.SqlServer" Version="$(MicrosoftEntityFrameworkCoreSqlServerPackageVersion)" /> <PackageVersion Include="Microsoft.EntityFrameworkCore.Tools" Version="$(MicrosoftEntityFrameworkCoreToolsPackageVersion)" /> <PackageVersion Include="Microsoft.EntityFrameworkCore.Design" Version="$(MicrosoftEntityFrameworkCoreDesignPackageVersion)" /> <!-- runtime dependencies--> <PackageVersion Include="Microsoft.Extensions.Configuration.Abstractions" Version="$(MicrosoftExtensionsConfigurationAbstractionsPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Configuration.Binder" Version="$(MicrosoftExtensionsConfigurationBinderPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="$(MicrosoftExtensionsDependencyInjectionAbstractionsPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Hosting.Abstractions" Version="$(MicrosoftExtensionsHostingAbstractionsPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Hosting" Version="$(MicrosoftExtensionsHostingPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Http" Version="$(MicrosoftExtensionsHttpPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="$(MicrosoftExtensionsLoggingAbstractionsPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Options" Version="$(MicrosoftExtensionsOptionsPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Primitives" Version="$(MicrosoftExtensionsPrimitivesPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Http.Resilience" Version="$(MicrosoftExtensionsHttpResiliencePackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.TimeProvider.Testing" Version="$(MicrosoftExtensionsTimeProviderTestingVersion)" /> <!-- external dependencies --> <PackageVersion Include="Confluent.Kafka" Version="2.4.0" /> <PackageVersion Include="Dapper" Version="2.1.44" /> <PackageVersion Include="DnsClient" Version="1.8.0" /> <PackageVersion Include="Google.Protobuf" Version="3.27.1" /> <PackageVersion Include="Grpc.AspNetCore" Version="2.63.0" /> <PackageVersion Include="Grpc.Net.ClientFactory" Version="2.63.0" /> <PackageVersion Include="Grpc.Tools" Version="2.64.0" /> <PackageVersion Include="Humanizer.Core" Version="2.14.1" /> <PackageVersion Include="KubernetesClient" Version="14.0.2" /> <PackageVersion Include="Microsoft.Data.SqlClient" Version="5.2.1" /> <PackageVersion Include="Microsoft.FluentUI.AspNetCore.Components" Version="4.7.2" /> <PackageVersion Include="Microsoft.FluentUI.AspNetCore.Components.Icons" Version="4.7.2" /> <PackageVersion Include="Milvus.Client" Version="2.3.0-preview.1"/> <PackageVersion Include="MongoDB.Driver" Version="2.27.0" /> <PackageVersion Include="MongoDB.Driver.Core.Extensions.DiagnosticSources" Version="1.4.0" /> <PackageVersion Include="MySqlConnector.DependencyInjection" Version="2.3.6" /> <PackageVersion Include="MySqlConnector.Logging.Microsoft.Extensions.Logging" Version="2.1.0" /> <PackageVersion Include="NATS.Net" Version="2.3.0" /> <PackageVersion Include="Npgsql.DependencyInjection" Version="8.0.3" /> <PackageVersion Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.4" /> <PackageVersion Include="Oracle.EntityFrameworkCore" Version="8.23.40" /> <PackageVersion Include="Polly.Core" Version="8.4.1" /> <PackageVersion Include="Polly.Extensions" Version="8.4.1" /> <PackageVersion Include="Pomelo.EntityFrameworkCore.MySql" Version="8.0.2" /> <PackageVersion Include="Qdrant.Client" Version="1.10.0" /> <PackageVersion Include="RabbitMQ.Client" Version="[6.8.1,7.0.0)" /> <PackageVersion Include="StackExchange.Redis" Version="2.8.0" /> <PackageVersion Include="System.IO.Hashing" Version="8.0.0" /> <PackageVersion Include="Yarp.ReverseProxy" Version="2.1.0" /> <!-- Open Telemetry --> <PackageVersion Include="Npgsql.OpenTelemetry" Version="8.0.3" /> <PackageVersion Include="OpenTelemetry.Exporter.InMemory" Version="1.9.0" /> <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.9.0" /> <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.9.0" /> <PackageVersion Include="OpenTelemetry.Instrumentation.GrpcNetClient" Version="1.9.0-beta.1" /> <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.9.0" /> <PackageVersion Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.9.0" /> <PackageVersion Include="OpenTelemetry.Instrumentation.Runtime" Version="1.9.0" /> <!-- build dependencies --> <PackageVersion Include="MicroBuild.Plugins.SwixBuild.Dotnet" Version="1.1.87-gba258badda" /> <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.10.0" /> <PackageVersion Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="3.3.4" /> <PackageVersion Include="Microsoft.DotNet.Build.Tasks.Workloads" Version="8.0.0-beta.23564.4" /> <PackageVersion Include="Microsoft.Signed.Wix" Version="$(MicrosoftSignedWixVersion)" /> <PackageVersion Include="Microsoft.DotNet.Build.Tasks.Installers" Version="8.0.0-beta.23564.4" /> <PackageVersion Include="System.CommandLine" Version="2.0.0-beta4.24324.3" /> <!-- unit test dependencies --> <PackageVersion Include="bUnit" Version="1.28.9" /> <PackageVersion Include="JsonSchema.Net" Version="7.1.2" /> <PackageVersion Include="Microsoft.DotNet.RemoteExecutor" Version="$(MicrosoftDotNetRemoteExecutorPackageVersion)" /> <PackageVersion Include="Microsoft.DotNet.XUnitExtensions" Version="$(MicrosoftDotNetXUnitExtensionsPackageVersion)" /> <PackageVersion Include="Microsoft.Extensions.Diagnostics.Testing" Version="$(MicrosoftExtensionsDiagnosticsTestingPackageVersion)" /> <PackageVersion Include="Microsoft.NET.Runtime.WorkloadTesting.Internal" Version="$(MicrosoftNETRuntimeWorkloadTestingInternalVersion)" /> <PackageVersion Include="Microsoft.Playwright" Version="1.45.0" /> <PackageVersion Include="Swashbuckle.AspNetCore" Version="6.6.2" /> <PackageVersion Include="Testcontainers.MongoDb" Version="$(TestcontainersPackageVersion)" /> <PackageVersion Include="Testcontainers.MsSql" Version="$(TestcontainersPackageVersion)" /> <PackageVersion Include="Testcontainers.MySql" Version="$(TestcontainersPackageVersion)" /> <PackageVersion Include="Testcontainers.PostgreSQL" Version="$(TestcontainersPackageVersion)" /> <PackageVersion Include="Testcontainers.RabbitMq" Version="$(TestcontainersPackageVersion)" /> <PackageVersion Include="Testcontainers.Redis" Version="$(TestcontainersPackageVersion)" /> <PackageVersion Include="Testcontainers.Nats" Version="$(TestcontainersPackageVersion)" /> <PackageVersion Include="Testcontainers.Milvus" Version="$(TestcontainersPackageVersion)" /> <!-- playground apps dependencies --> <PackageVersion Include="Dapr.AspNetCore" Version="1.13.1" /> <PackageVersion Include="Microsoft.Orleans.Clustering.AzureStorage" Version="8.2.0" /> <PackageVersion Include="Microsoft.Orleans.Persistence.AzureStorage" Version="8.2.0" /> <PackageVersion Include="Microsoft.Orleans.Client" Version="8.2.0" /> <PackageVersion Include="Microsoft.Orleans.Server" Version="8.2.0" /> <PackageVersion Include="Microsoft.Orleans.Sdk" Version="8.2.0" /> <!-- Pinned version for Component Governance - Remove when root dependencies are updated --> <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" /> </ItemGroup> </Project>' subst = '$1,' result = str.gsub(re, subst) # Print the result of the substitution puts result

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html