xenial (1) bup-newliner.1.gz

NAME

       bup-newliner - make sure progress messages don't overlap with output

SYNOPSIS

       <any command> 2>&1 | bup newliner

DESCRIPTION

       bup newliner  is  run  automatically  by bup.  You shouldn't need it unless you're using it in some other
       program.

       Progress messages emitted by bup (and some other tools) are of the form "Message ### content\r", that is,
       a  status  message  containing  a  variable-length number, followed by a carriage return character and no
       newline.  If these messages are printed more than once, they overwrite each other, so what the user  sees
       is a single line with a continually-updating number.

       This  works fine until some other message is printed.  For example, progress messages are usually printed
       to stderr, but other program messages might be printed to stdout.  If those messages are shorter than the
       progress message line, the screen will be left with weird looking artifacts as the two messages get mixed
       together.

       bup newliner prints extra space characters at the right time to make sure that doesn't happen.

       If you're running a program that has problems with these artifacts, you can usually fix  them  by  piping
       its stdout and its stderr through bup newliner.

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.