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nix: Reserve shebang line syntax and only parse double backtick quotes

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Being restrictive about syntax leaves opportunity to improve the
syntax and functionality later.
This commit is contained in:
Robert Hensing 2023-05-12 19:46:37 +02:00 • committed by tomberek
parent cc68ed8ff7
commit 20ff61ab25
6 changed files with 177 additions and 58 deletions
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16
tests/functional/flakes/flakes.sh
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@ -80,6 +80,7 @@ chmod +x "$nonFlakeDir/shebang.sh"
git -C "$nonFlakeDir" add README.md shebang.sh
git -C "$nonFlakeDir" commit -m 'Initial'
# this also tests a fairly trivial double backtick quoted string, ``--command``
cat > $nonFlakeDir/shebang-comments.sh <<EOF
#! $(type -P env) nix
# some comments
@ -87,11 +88,23 @@ cat > $nonFlakeDir/shebang-comments.sh <<EOF
# some comments
#! nix --offline shell
#! nix flake1#fooScript
#! nix --no-write-lock-file --command bash
#! nix --no-write-lock-file ``--command`` bash
foo
EOF
chmod +x $nonFlakeDir/shebang-comments.sh
cat > $nonFlakeDir/shebang-reject.sh <<EOF
#! $(type -P env) nix
# some comments
# some comments
# some comments
#! nix --offline shell *
#! nix flake1#fooScript
#! nix --no-write-lock-file --command bash
foo
EOF
chmod +x $nonFlakeDir/shebang-reject.sh
# Construct a custom registry, additionally test the --registry flag
nix registry add --registry "$registry" flake1 "git+file://$flake1Dir"
nix registry add --registry "$registry" flake2 "git+file://$percentEncodedFlake2Dir"
@ -539,3 +552,4 @@ expectStderr 1 nix flake metadata "$flake2Dir" --no-allow-dirty --reference-lock
[[ $($nonFlakeDir/shebang.sh) = "foo" ]]
[[ $($nonFlakeDir/shebang.sh "bar") = "foo"$'\n'"bar" ]]
[[ $($nonFlakeDir/shebang-comments.sh ) = "foo" ]]
expect 1 $nonFlakeDir/shebang-reject.sh 2>&1 | grepQuiet -F 'error: unsupported unquoted character in nix shebang: *. Use double backticks to escape?'