One can now use `Arg::allow_hyphen_values(true)` which will enable `--opt -val` style values only
for the specific arg and not command wide.
Closes#742
Flags, Opts, and Positionals now store their internals using compartmented Base, Valued, and
Switched structs to keep the code duplication down and make it easier to maintain.
Iniside the src/app/parser.rs there have been several changes to make reasoning about the code
easier. Primarily moving related sections out of the large get_matches_with into their own
functions.
Now one can build CLIs that support things like `mv <files>... <target>`
There are a few requirements and caveats;
* The final positional argument (and all positional arguments prior) *must* be required
* Only one positional argument may be `multiple(true)`
* Only the second to last, or last positional argument may be `multiple(true)`
Closes#725
Prior to this commit, conflicting error messages and the suggeseted usage would depend on whether
you defined the conflict on both arguments, or just one, and the order in which you specified the
conflicting arguments at runtime.
Now they are symetrical, meaning the suggestions from the error message are consistent, and it no
longer matters if you specify the conflict in one, or both arguments.
Closes#718
Don't attempt to change the display order of flags/options until any app
settings have been propagated down from a parent App in case DeriveDisplayOrder
and/or UnifiedHelpMessage are propagated.
Fixes#706
One can now use `AppSettings::AllowNegativeNumbers` which functions similar to `AllowLeadingHyphen`
with the exception that only unknown numbers are allowed have a preceding hyphen character.
See the documentation for details and examples.
Closes#696
The new version of rustc 1.14.0-nightly (144af3e97 2016-10-02) has new
linting warnings/errors. This commit fixes them.
Signed-off-by: Salim Afiune <afiune@chef.io>
Added same alias funtionality for flags, now you can do:
```
Arg::with_name("flg")
.long("flag")
.short("f")
.alias("not_visible_flag")
.visible_alias("awesome_v_flag")
```
Signed-off-by: Salim Afiune <afiune@chef.io>
There are some cases where you need to have an argument to have an
alias, an example could be when you depricate one option in favor of
another one.
Now you are going to be able to alias arguments as follows:
```
Arg::with_name("opt")
.long("opt")
.short("o")
.takes_value(true)
.alias("invisible")
.visible_alias("visible")
```
Closes#669
