* Updated nu_with_plugins to handle new nushell
- Now it requires the plugin format and name to be passed in, because
we can't really guess the format
- It calls `register` with format and plugin path
- It creates a temporary folder and in it an empty temporary plugin.nu
so that the tests don't conflict with each other or with local copy of
plugin.nu
- Instead of passing the commands via stdin it passes them via the new
--commands command line argument
* Rename path to command for clarity
* Enable core_inc tests
Remove deprecated inc feature and replace with new plugin feature
* Update core_inc tests for new nu_with_plugins syntax
* Rework core_inc::can_only_apply_one
The new inc plugin doesn't error if passed more than one but instead
chooses the highest increment
* Gate all plugin tests behind feature = "plugin" instead of one by one
* Remove format!-like behavior from nu_with_plugins
nu_with_plugins had format!-like behavior where it would allow calls
such as this:
```rs
nu_with_plugins!(
cwd: "dir/",
"open {} | get {}",
"Cargo.toml",
"package.version"
)
```
And although nifty it seems to have never been used before and the same
can be achieved with a format! like so:
```rs
nu_with_plugins!(
cwd: "dir/",
format!("open {} | get {}", "Cargo.toml", "package.version")
)
```
So I am removing it to keep the complexity of the macro in check
* Add multi-plugin support to nu_with_plugins
Useful for testing interactions between plugins
* Alternative 1: run `cargo build` inside of tests
* Handle Windows by canonicalizing paths and add .exe
One VM install later and lots of learning about how command line
arguments work and here we are
* Making Commands match what UntaggedValue needs
* WIP
* WIP
* WIP
* Moved to expressions for conditions
* Add 'each' command to use command blocks
* More cleanup
* Add test for 'each'
* Instead use an expression block
This commit changes the way we shell out externals when using the `"$it"` argument. Also pipes per row to an external's stdin if no `"$it"` argument is present for external commands.
Further separation of logic (preparing the external's command arguments, getting the data for piping, emitting values, spawning processes) will give us a better idea for lower level details regarding external commands until we can find the right abstractions for making them more generic and unify within the pipeline calling logic of Nu internal's and external's.
