ILRepack throws unhandled exception when /lib folder ends with a slash

[LazaroOnline]

(ILRepack Version 2.0.44, running on Windows 11 up to date)

When using the /lib: option, if the folder specified ends with the slash character \ then ILRepack throws the error:

Example to reproduce the error:

ILRepack.exe /lib:"C:\TestFolder\"  /out:"C:\app.dll"  "bin\app.dll"  "bin\dep1.dll"

Error:

System.ArgumentException: Illegal characters in path.
   at System.IO.LongPathHelper.Normalize(String path, UInt32 maxPathLength, Boolean checkInvalidCharacters, Boolean expandShortPaths)
   at System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
   at System.IO.Path.GetFullPathInternal(String path)
   at ILRepacking.RepackOptions.<>c.<Parse>b__191_0(String d) in /_/ILRepack/RepackOptions.cs:line 274
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Enumerable.<DistinctIterator>d__64`1.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at ILRepacking.RepackOptions.Parse() in /_/ILRepack/RepackOptions.cs:line 271
   at ILRepacking.RepackOptions..ctor(ICommandLine commandLine, IFile file) in /_/ILRepack/RepackOptions.cs:line 168
   at ILRepacking.Application.Main(String[] args) in /_/ILRepack/Application.cs:line 26

If you remove the slash like this it would work:

ILRepack.exe /lib:"C:\TestFolder"  /out:"C:\app.dll"  "bin\app.dll"  "bin\dep1.dll"

But in some automated pipelines, or MSBuild, the path already comes with the ending slash, making things harder.

Ideally ILRepack would catch that exception and just work with or without any number of ending slashes of any type \ or / just like any path in windows, so these should all work:

ILRepack.exe /lib:"C:\TestFolder"  ..."
ILRepack.exe /lib:"C:\TestFolder\"  ..."
ILRepack.exe /lib:"C:\TestFolder\\"  ..."
ILRepack.exe /lib:"C:\TestFolder/"  ..."
ILRepack.exe /lib:"C:\TestFolder//"  ..."
ILRepack.exe /lib:"C:\TestFolder//\\/\/\"  ..."