As a result, the isexe check will always return false unless the file extension is in all-caps. This is because the file extensions obtained from the PathExt environment variable are in all-caps. This is not a great default behavior, because most file extensions are lower-case.
Edit: Nevermind; this library works fine. It converts both the path and the extension to lower-case. I was thinking of the step performed in the which library, which tries finding an executable by appending each extension found in PathExt to the command name until it finds one.
Windows now features per-directory case-sensitivity. This is explained here: https://blogs.msdn.microsoft.com/commandline/2018/02/28/per-directory-case-sensitivity-and-wsl/ A directory created in the Windows Subsystem for Linux will be case-sensitive by default.
As a result, the
isexecheck will always return false unless the file extension is in all-caps. This is because the file extensions obtained from thePathExtenvironment variable are in all-caps. This is not a great default behavior, because most file extensions are lower-case.Edit: Nevermind; this library works fine. It converts both the path and the extension to lower-case. I was thinking of the step performed in the which library, which tries finding an executable by appending each extension found in PathExt to the command name until it finds one.