// SC2240: Use $(cmd) instead of legacy `cmd` (placeholder - overlaps SC2225)
#[allow(unused_imports)]
use crate::linter::LintResult;

pub fn check(_source: &str) -> LintResult {
    // Placeholder: This rule is covered by SC2225 (backticks in assignments)
    // General backtick usage beyond assignments would require more complex parsing
    // Implementation deferred as it overlaps with existing functionality
    LintResult::new()
}

#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn test_sc2240_placeholder() {
        let code = "output=`cmd`";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder - covered by SC2225
    }
    #[test]
    fn test_sc2240_dollar_paren_placeholder() {
        let code = "output=$(cmd)";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2240_comment_placeholder() {
        let code = "# comment";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0);
    }
    #[test]
    fn test_sc2240_no_code_placeholder() {
        let code = "";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0);
    }
    #[test]
    fn test_sc2240_simple_placeholder() {
        let code = "echo test";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0);
    }
    #[test]
    fn test_sc2240_nested_placeholder() {
        let code = "var=$(echo `date`)";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2240_in_string_placeholder() {
        let code = r#"echo "Result: `cmd`""#;
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2240_echo_placeholder() {
        let code = "echo `date`";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2240_for_loop_placeholder() {
        let code = "for f in `ls`; do";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2240_if_placeholder() {
        let code = "if [ \"`cmd`\" = \"value\" ]; then";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
}
