 * add comments, reformat, etc  * rejigger history_do to incorporate the functions of irb_eval, which was unnecessarily factored out  * change history_write to use the block form of File.open  * change get_lines (and all its callers) to take a more flexible argument list.  Can now mix-and-match Fixnums, Arrays, and Ranges
 * add comments, reformat, etc
 * rejigger history_do to incorporate the functions of irb_eval, which was unnecessarily factored out
 * change history_write to use the block form of File.open
 * change get_lines (and all its callers) to take a more flexible argument list.  Can now mix-and-match Fixnums, Arrays, and Ranges


git-svn-id: 674e63a83fb0e06c21f7c4354869757a49bb7490@49 e34c58d7-84fb-0310-b8da-d1fa509e4264

bleything/miscellany,bleything/miscellany,bleything/miscellany