Subject: | string of a number with leading and/or trailing space is not shown as a string |
If the string only consists of a number and leading and/or trailing space, it is printed without quotes and highlighted as a number, but the spaces are still printed, though easy to miss. The string should be quoted for this case.
$ DATAPRINTERRC= perl -MDDP -E 'p $_ for " 23 ", " 2 3 "'
23
" 2 3 "