bolknote/SedChess — pull request #8 by ziman (2013-08-23 13:24:29+00:00)
Title: Remove unnecessary backslashes.

If the minus sign is the first character in square brackets, it needn't be backslashed because it cannot delimit a range. What's more, this caused sed to fail on Debian Jessie, which complained about invalid ranges.

I believe that this change will not break interoperability with other versions of sed.