A script that works as a cygwin shell command but is also an autohotkey v2 script

Autohotkey 2 + bash polyglot

#Requires AutoHotkey v2.0
#SingleInstance Force

declare "x" ; exec autohotkey "$(cygpath -w "$0")" "$@"

/*
The above is a valid autohotkey script preamble - any directives are
placed at the top and read by bash as comments.  (We can't use a
shebang because it makes AHK barf, so we're relying on text files
being shell scripts by default.)

So the declare is read as a shell command before a second shell
command to exec the script via autohotkey.exe.  But AHK reads it
as a function call to declare("x"), followed by a comment.  The
script just needs to have an empty function definition for declare()
somewhere in it (as shown below), and then the rest of the script
is pure AHK.
*/

declare(x) {
}

; Optional: syntax declaration for gist/vscode/etc. to see this as an ahk file
; ex: set ft=ahk :