wenzelm [Thu, 07 Aug 2008 19:21:40 +0200] rev 27778
renamed SymbolPos.scan_position to SymbolPos.scan_pos;
implode/explode: explicit type text = string;
added implode_delim;
explode: Position.reset_range;
wenzelm [Thu, 07 Aug 2008 19:21:39 +0200] rev 27777
only increment column if valid;
more robust handling of invalid entries;
clarified line/line_file: no column here;
added start = (1, 1);
added reset_range;
tuned;