No diff provided. Pass a diff string, a file path, or '-' to

Error message

No diff provided. Pass a diff string, a file path, or '-' to read stdin.

What it means

Error "No diff provided. Pass a diff string, a file path, or '-' to read stdin." thrown in nikivdev/code.

Source

Thrown at src/changes.rs:176

    if let Some(file) = file {
        return fs::read_to_string(&file)
            .with_context(|| format!("failed to read diff file {}", file.display()));
    }

    if let Some(raw) = diff {
        if raw == "-" {
            return read_stdin();
        }
        let as_path = PathBuf::from(&raw);
        if as_path.exists() {
            return fs::read_to_string(&as_path)
                .with_context(|| format!("failed to read diff file {}", as_path.display()));
        }
        return Ok(raw);
    }

    if atty::is(atty::Stream::Stdin) {
        bail!("No diff provided. Pass a diff string, a file path, or '-' to read stdin.");
    }

    read_stdin()
}

fn read_stdin() -> Result<String> {
    let mut buffer = String::new();
    io::stdin()
        .read_to_string(&mut buffer)
        .context("failed to read diff from stdin")?;
    Ok(buffer)
}

fn apply_diff(diff: Option<String>, file: Option<PathBuf>) -> Result<()> {
    let repo_root = repo_root()?;
    let content = read_diff_input(diff, file)?;
    if content.trim().is_empty() {
        bail!("Diff input is empty.");

View on GitHub (pinned to a747e741ae)

When it happens

Trigger: Thrown at src/changes.rs:176 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of nikivdev/code@a747e741ae (2026-09-01). Data as JSON: /api/errors/f082b5c66ae5b27b. Report an issue: GitHub.