iris
1629e0911e
`complete_lines` splits on `\n` only, which is right -- this stream is JSONL, and a record terminated by a bare `\r` would not be a record -- but the doc comment said why the remainder is held without saying what decides where a line ends. Worth the sentence because of what the failure would look like if the CLI ever wrote such a line: the session goes quiet, the process is healthy, nothing errors, and the cause is a line splitter. The dev-updater session hit exactly this shape today reading cargo's progress line, which is `\r`-terminated for redrawing in place, and lost a whole build's worth of output to it.