Removing ^M and the newline that follows it.

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bup-newliner

bup-newliner(1) 					      General Commands Manual						   bup-newliner(1)

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", that is, a status message containing a vari-
       able-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 mes-
       sages 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>.

Bup unknown-															   bup-newliner(1)

Shell Programming and Scripting