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Merge pull request #10701 from cole-h/nix-command-warn-unknown-settings

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Warn on unknown settings when the first positional is an argument
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Robert Hensing 2024-05-20 15:15:13 +02:00 committed by GitHub
commit e4be8abe42
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4 changed files with 42 additions and 8 deletions
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28
doc/manual/rl-next/fix-silent-unknown-options Normal file
View file

@ -0,0 +1,28 @@
---
synopsis: Warn on unknown settings anywhere in the command line
prs: 10701
---
All `nix` commands will now properly warn when an unknown option is specified anywhere in the command line.
Before:
```console
$ nix-instantiate --option foobar baz --expr '{}'
warning: unknown setting 'foobar'
$ nix-instantiate '{}' --option foobar baz --expr
$ nix eval --expr '{}' --option foobar baz
{ }
```
After:
```console
$ nix-instantiate --option foobar baz --expr '{}'
warning: unknown setting 'foobar'
$ nix-instantiate '{}' --option foobar baz --expr
warning: unknown setting 'foobar'
$ nix eval --expr '{}' --option foobar baz
warning: unknown setting 'foobar'
{ }
```

7
src/libutil/args.cc
View file

@ -268,8 +268,6 @@ void RootArgs::parseCmdline(const Strings & _cmdline, bool allowShebang)
verbosity = lvlError;
}
bool argsSeen = false;
// Heuristic to see if we're invoked as a shebang script, namely,
// if we have at least one argument, it's the name of an
// executable file, and it starts with "#!".
@ -336,10 +334,6 @@ void RootArgs::parseCmdline(const Strings & _cmdline, bool allowShebang)
throw UsageError("unrecognised flag '%1%'", arg);
}
else {
if (!argsSeen) {
argsSeen = true;
initialFlagsProcessed();
}
pos = rewriteArgs(cmdline, pos);
pendingArgs.push_back(*pos++);
if (processArgs(pendingArgs, false))
@ -349,7 +343,6 @@ void RootArgs::parseCmdline(const Strings & _cmdline, bool allowShebang)
processArgs(pendingArgs, true);
if (!argsSeen)
initialFlagsProcessed();
/* Now that we are done parsing, make sure that any experimental

4
tests/functional/eval.sh
View file

@ -52,3 +52,7 @@ fi
# Test --arg-from-stdin.
[[ "$(echo bla | nix eval --raw --arg-from-stdin foo --expr '{ foo }: { inherit foo; }' foo)" = bla ]]
# Test that unknown settings are warned about
out="$(expectStderr 0 nix eval --option foobar baz --expr '""' --raw)"
[[ "$(echo "$out" | grep foobar | wc -l)" = 1 ]]

9
tests/functional/misc.sh
View file

@ -30,3 +30,12 @@ expectStderr 1 nix-instantiate --eval -E '[]' -A 'x' | grepQuiet "should be a se
expectStderr 1 nix-instantiate --eval -E '{}' -A '1' | grepQuiet "should be a list"
expectStderr 1 nix-instantiate --eval -E '{}' -A '.' | grepQuiet "empty attribute name"
expectStderr 1 nix-instantiate --eval -E '[]' -A '1' | grepQuiet "out of range"
# Unknown setting warning
# NOTE(cole-h): behavior is different depending on the order, which is why we test an unknown option
# before and after the `'{}'`!
out="$(expectStderr 0 nix-instantiate --option foobar baz --expr '{}')"
[[ "$(echo "$out" | grep foobar | wc -l)" = 1 ]]
out="$(expectStderr 0 nix-instantiate '{}' --option foobar baz --expr )"
[[ "$(echo "$out" | grep foobar | wc -l)" = 1 ]]