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doc/command-ref/nix-shell: Shebangs can occur anywhere (#11202)

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Co-authored-by: Valentin Gagarin <valentin@gagarin.work>
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Corbin Simpson 2024-07-30 05:51:47 -07:00 committed by GitHub
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doc/manual/src/command-ref/nix-shell.md
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@ -297,3 +297,8 @@ with import <nixpkgs> {};
runCommand "dummy" { buildInputs = [ python pythonPackages.prettytable ]; } "" runCommand "dummy" { buildInputs = [ python pythonPackages.prettytable ]; } ""
``` ```
The script's file name is passed as the first argument to the interpreter specified by the `-i` flag.
Aside from the very first line, which is a directive to the operating system, the additional `#! nix-shell` lines do not need to be at the beginning of the file.
This allows wrapping them in block comments for languages where `#` does not start a comment, such as ECMAScript, Erlang, PHP, or Ruby.