More docs, remove /c

README.adoc

@@ -694,9 +694,34 @@ Yo from a shell script!
 Hello from ruby!
 ```
 
-On Windows, shebang commands containing a `/` are translated from Unix-style
+==== Shebang Recipe Execution on Windows
+
+On Windows, shebang interpreter paths containing a `/` are translated from Unix-style
 paths to Windows-style paths using `cygpath`, a utility that ships with http://www.cygwin.com[Cygwin].
 
+For example, to execute this recipe on Windows:
+
+```make
+echo:
+  #!/usr/bin/env sh
+
+  echo "Hello!"
+```
+
+The interpreter path `/usr/bin/env` will be translated to a Windows-style path for
+executation using `cygpath`.
+
+If the interpreter path does not contain a `/`, it will be executed without being
+translated with `cygpath`. This is useful if `cygpath` is not available, or you
+wish to use a Windows style path to the interpreter:
+
+```make
+echo:
+  #!C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
+
+  echo "Hello!"
+```
+
 === Multi-line Constructs
 
 Recipes without an initial shebang are evaluated and run line-by-line, which means that multi-line constructs probably won't do what you want.

tests/integration.rs

@@ -2641,7 +2641,7 @@ test! {
   name: windows_shebang_path,
   justfile: r#"
     foo:
-      #!C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe /c
+      #!C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
       echo "Batch file, baby!"
   "#,
   args: (),