`dartdoc --help` prints it's output in a very very narrow column, which is unaffected by the console width: <img width="1207" alt="Screenshot 2020-09-16 at 11 33 33" src="https://user-images.githubusercontent.com/13644170/93319719-7ee01000-f810-11ea-812b-8ad2df783416.png"> I'd expect the output to be wrapped to fit in the width of the terminal, not a preset (very small) hardcoded width. We have an API for getting the terminal width: https://api.dart.dev/stable/2.9.1/dart-io/Stdout/terminalColumns.html For a similar change we made recently, see https://dart-review.googlesource.com/c/sdk/+/158400.