Sat, 01 Mar 2014 15:58:47 +0100 wenzelm incorporate chunk range that is 1 off end-of-input, for improved error positions (NB: command spans are tight, without trailing whitespace);
Sat, 01 Mar 2014 13:05:46 +0100 wenzelm more symbols, less parentheses;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -2 +2 +10 +30 +100 +300 +1000 +3000 +10000 tip