use REG_IN/OUT for region spec
Print newline at the last of jason cache.
citation option
modify pattern match implementation to call function
use main::FILELABEL constant for filename parameter
Fix to make --man/--show work on module without option definition.
Use Dumper to print non-string pattern with -dm option.
Allow to negate --ignore-case (-i) and --line-number (-n) options.
Colorize -dm output.
initial commit of line.pm
Except regexp for --dm debug output because Dumper makes unicode string invisible.
Implement $<n> and $<shift> argument conversion in rc file. With document update.
first release of -Mline module
treat look-ahead/behind special in pattern