C:\path-to\cpan-bugs\proc-bg\hello-pathext.pl => 0
./com-hello.com
-x:     1
pid:    7164
alive:  1
Hello, world
wait:   0
start:  1493154171
end:    1493154171

./com-hello
-x:     0
pid:    3488
alive:  1
Hello, world
wait:   0
start:  1493154171
end:    1493154171

./c-hello.exe
-x:     1
pid:    3576
alive:  1
Hello, world
wait:   0
start:  1493154171
end:    1493154171

./c-hello
-x:     0
pid:    5312
alive:  1
Hello, world
wait:   0
start:  1493154171
end:    1493154171

./bat-hello.bat
-x:     1
pid:    4816
alive:  1
hello world
wait:   0
start:  1493154171
end:    1493154171

./bat-hello
-x:     0
pid:    7972
alive:  1
hello world
wait:   0
start:  1493154171
end:    1493154171

./cmd-hello.cmd
-x:     1
pid:    668
alive:  1
hello world
wait:   0
start:  1493154171
end:    1493154171

./cmd-hello
-x:     0
pid:    6692
alive:  1
hello world
wait:   0
start:  1493154171
end:    1493154171

./js-hello.js
C:\path-to\cpan-bugs\proc-bg\hello-pathext.pl: cannot find absolute location of ./js-hello.js
./js-hello.js   didn't run
./js-hello
C:\path-to\cpan-bugs\proc-bg\hello-pathext.pl: cannot find absolute location of ./js-hello
./js-hello      didn't run
C:/path-to/cpan-bugs/proc-bg/js-hello.js
looking for absolute: C:/path-to/cpan-bugs/proc-bg/js-hello.js
C:\path-to\cpan-bugs\proc-bg\hello-pathext.pl: no executable program located at C:/path-to/cpan-bugs/proc-bg/js-hello.js
C:/path-to/cpan-bugs/proc-bg/js-hello.js      didn't run
x.com   1
x.exe   1
x.bat   1
x.cmd   1
x.vbs   0
x.vbe   0
x.js    0
x.jse   0
x.wsf   0
x.wsh   0
x.msc   0
x.pl    0
x.COM   1
x.EXE   1
x.BAT   1
x.CMD   1
x.VBS   0
x.VBE   0
x.JS    0
x.JSE   0
x.WSF   0
x.WSH   0
x.MSC   0

C:\path-to\cpan-bugs\proc-bg\>echo %pathext%
.com;.exe;.bat;.cmd;.vbs;.vbe;.js;.jse;.wsf;.wsh;.msc;.pl;.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC