1612: Use about() with help() and long_about() with long_help() r=pksunkara a=TheLostLambda
I was going through the clap documentation and was under the impression that calling `help()` would call `about()` and `long_help()` would call `long_about()`, but I've actually discovered this not to be the case. Instead, the `long_about()` was always shown when it existed, rendering the output (in the about section) of programs called with `-h` and `--help` identical. Issue #1472 shows this and that is fixed here.
Note this doesn't remove the ability to use the same about in both cases: if `long_about()` is unset, then `about()` is used in both cases.
I've changed the implementation here to use `is_some()` and `unwrap()` as opposed to `if let` because it ultimately allows for less repetitive code. Ideally, I'd be able to pair `if let` with a secondary condition (namely `self.use_long`), but to my dismay, let-chains are not stabilized yet.
For a second opinion, here is the code a settled on:
```
if self.use_long && parser.meta.long_about.is_some() {
debugln!("Help::write_default_help: writing long about");
write_thing!(parser.meta.long_about.unwrap())
} else if parser.meta.about.is_some() {
debugln!("Help::write_default_help: writing about");
write_thing!(parser.meta.about.unwrap())
}
```
Here is the alternative:
```
if self.use_long {
if let Some(about) = parser.meta.long_about {
debugln!("Help::write_default_help: writing long about");
write_thing!(about)
} else if let Some(about) = parser.meta.about {
debugln!("Help::write_default_help: writing about");
write_thing!(about)
}
} else {
if let Some(about) = parser.meta.about {
debugln!("Help::write_default_help: writing about");
write_thing!(about)
}
}
```
Co-authored-by: Brooks J Rady <b.j.rady@gmail.com>
1681: WIP: Extract subcommands into separate trait r=pksunkara a=CreepySkeleton
Not-yet-working-but-almost-there "multiple traits" approach. More or less done, what's left is to catch some bugs and adapt tests/examples.
For the record: it took so long because of RL stuff (who would have thought?) and because [there was a detailed description of the experience I've had here, but it was deleted because it contained a lot of profanity and emotional notes].
As the only person alive that understands how the derive works (if you won't blow your own horn, nobody will do it for you, yeah), I'd like to made a statement: we Do need the refactoring.
Co-authored-by: CreepySkeleton <creepy-skeleton@yandex.ru>
1683: Added HelpRequired AppSetting r=pksunkara a=thomasfermi
Closes#1683
There are likely some problems with my solution to this issue. I would be thankful for a review!
Co-authored-by: thomasfermi <mario.theers@gmail.com>
1678: Refactor clap_generate r=CreepySkeleton a=pksunkara
I have copied the code from [clap_generate]( https://github.com/clap-rs/clap_generate) and refactored the structure a bit.
This new structure will allow people to write their own generators using our `Generator` trait which will contain some helpers (Still working on polishing them).
Co-authored-by: Ole Martin Ruud <barskern@outlook.com>
Co-authored-by: Pavan Kumar Sunkara <pavan.sss1991@gmail.com>
1664: Import structopt r=pksunkara a=CreepySkeleton
OK, here is about 50% of what's left to import.
`impl StructOpt for Box<impl StructOpt>` is not imported because layouts of `StructOpt` and `Clap` are too different. I'll work it out after the import is done.
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Co-authored-by: CreepySkeleton <creepy-skeleton@yandex.ru>
Co-authored-by: Cecile Tonglet <cecile.tonglet@cecton.com>
Co-authored-by: David McNeil <mcneil.david2@gmail.com>
1670: Minor refactoring r=pksunkara a=CreepySkeleton
Some minor improvements. Also gets some bugs fixed
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Co-authored-by: CreepySkeleton <creepy-skeleton@yandex.ru>
