Use one or more of the provided characters to replace the newline characters instead of the default tab. The characters in list are used circularly, i.e., when list is exhausted the first character from list is reused. This continues until a line from the last input file (in default operation) or the last line in each file (using the -s option) is displayed, at which time paste begins selecting characters from the beginning of list again.
The following special characters can also be used in list:
Empty string (not a null character).
Any other character preceded by a backslash is equivalent to the character itself.
Concatenate all of the lines of each separate input file in command line order. The newline character of every line except the last line in each input file is replaced with the tab character, unless otherwise specified by the -d option.
If '' is specified for one or more of the input files, the standard input is used; standard input is read one line at a time, circularly, for each instance of ''.