### Environment
PSReadLine: 2.2.2
PowerShell: 7.3.0-preview.2
OS: Microsoft Windows 10.0.19044
BufferWidth: 208
BufferHeight: 46
Last 5 Keys:
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[ e
### Exception
System.Management.Automation.PSArgumentException: Cannot process argument because the value of argument "name" is not valid. Change the value of the "name" argument and run the operation again.
at System.Management.Automation.Language.TypeName..ctor(IScriptExtent extent, String name)
at System.Management.Automation.Language.TypeResolver.ResolveTypeNameWithContext(TypeName typeName, Exception& exception, Assembly[] assemblies, TypeResolutionState typeResolutionState)
at System.Management.Automation.Language.SymbolResolver.VisitTypeName(TypeName typeName, Int32 genericArgumentCount, Boolean isAttribute)
at System.Management.Automation.Language.SymbolResolver.DispatchTypeName(ITypeName type, Int32 genericArgumentCount, Boolean isAttribute)
at System.Management.Automation.Language.SymbolResolver.VisitTypeExpression(TypeExpressionAst typeExpressionAst)
at System.Management.Automation.Language.TypeExpressionAst.InternalVisit(AstVisitor visitor)
at System.Management.Automation.Language.CommandExpressionAst.InternalVisit(AstVisitor visitor)
at System.Management.Automation.Language.PipelineAst.InternalVisit(AstVisitor visitor)
at System.Management.Automation.Language.StatementBlockAst.InternalVisit(AstVisitor visitor, ReadOnlyCollection`1 traps, ReadOnlyCollection`1 statements, AstVisitAction action)
at System.Management.Automation.Language.NamedBlockAst.InternalVisit(AstVisitor visitor)
at System.Management.Automation.Language.ScriptBlockAst.InternalVisit(AstVisitor visitor)
at System.Management.Automation.Language.Ast.Visit(AstVisitor astVisitor)
at System.Management.Automation.Language.SymbolResolver.ResolveSymbols(Parser parser, ScriptBlockAst scriptBlockAst)
at System.Management.Automation.Language.ScriptBlockAst.PerformPostParseChecks(Parser parser)
at System.Management.Automation.Language.Parser.ParseTask(String fileName, String input, List`1 tokenList, Boolean recursed, ParseMode parseMode)
at System.Management.Automation.Language.Parser.Parse(String fileName, String input, List`1 tokenList, ParseError[]& errors, ParseMode parseMode)
at System.Management.Automation.Language.Parser.ParseInput(String input, String fileName, Token[]& tokens, ParseError[]& errors)
$> using namespace [NameSpace]
$> [A ...
The namespace doesn't have to exist, just make up anything. The important part are the brackets around the namespace – they shouldn't be there, but apparently it is syntactically valid (not sure about semantics) and causes PSReadLine to crash.
Exception report
Screenshot
Steps to reproduce
The namespace doesn't have to exist, just make up anything. The important part are the brackets around the namespace – they shouldn't be there, but apparently it is syntactically valid (not sure about semantics) and causes PSReadLine to crash.