xecho is a simple command line tool that prints the arguments it receives to stderr and then exits successfully. It is useful for troubleshooting command-line tokenization quirks in cmd.exe, WSL, MSYS2, Git Bash, PowerShell, and Cygwin.

It has two usage forms:

Prints the raw command-line as reported by GetCommandLine(). The printf format used in this case is:

"xecho [%s]\n"

Where %s is the string from GetCommandLineW (or GetCommandLineA, depending on how the executable was compiled).

Prints the arguments as tokenized by the C runtime and passed to main(argc, char** argv). The printf format of each argv string is:

"xecho argv[%d]=[%s]\n"

Where %d is the zero-based index i into argv and %s is the value of argv[i].