Use horizon scroll instead of unnecessarily trying to fit into narrowed window

Narrowed window made stdout look so crowded and can sometime become seriously garbled any time the longer ones (that isn't even that long) use carriage-return (\r) and/or line-feed (\n).

No file or test is mentioned. Start by reproducing the narrowed-window stdout case with longer output containing carriage returns or line feeds, then trace the terminal output and window-sizing path. Done means long output uses horizontal scrolling rather than becoming crowded or garbled.

Written by the indexing model from the issue text.