5 commits

Author	SHA1	Message	Date
Kurtis Rader	4e1303823b	add ability for argparse to validate args ... Fixes #4211	2017-07-18 14:42:50 -07:00
Kurtis Rader	3e226f0a5e	implement a new implicit int option spec ... While updating the `history` function to use `argparse` I realized it is useful to define an option that can be used in three ways. First by using the short flag; e.g., `-n NNN`. Second by using the long flag; e.g., `--max NNN`. Third, as an implicit int flag; e.g., `-NNN`. This use case is now supported by a spec of the form `n#max`.	2017-07-16 18:27:41 -07:00
Kurtis Rader	06d071dd94	clarify argparse documentation	2017-07-16 15:33:04 -07:00
Kurtis Rader	63d601610d	implement -nnn style flags in argparse ... This implements support for numeric flags without an associated short or long flag name. This pattern is used by many commands. For example `head -3 /a/file` to emit the first three lines of the file. Fixes #4214	2017-07-13 20:36:59 -07:00
Kurtis Rader	0d08bfd6ff	document new argparse command ... Fixes #4190	2017-07-12 22:38:32 -07:00