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looks_like_text

nu_protocol::parser_path

Function looks_like_text 

Source 
pub fn looks_like_text(bytes: &[u8]) -> bool
Expand description

Heuristic: does bytes look like UTF-8 text a Nu script could be?

Inspects up to the first [TEXT_PROBE_BYTES] bytes. Rejects when:

  • a NUL byte is present (classic binary marker used by git/file)
  • the sample is not valid UTF-8 (Nu source is UTF-8)
  • more than 30% of bytes are C0 control characters other than tab/LF/CR

Empty input is treated as text (empty script).