stratact authored May 29, 2018 and Michael Aaron Murphy committed May 29, 2018

Pass existing `&[String]` arg values instead of converting them into `&[&str]` by `Vec` collecting to save some allocation

The binary logic is still contained and now exposed within the library.
Yet now the binary will simply re-use the shell that was built from the library.
Therefore, there will no longer be double compiles and excessive error messages.

According to the README all code must be formated using the nightly
formatter. Reran the format on the entire code-base as this came up
when preparing the previous PR.

To enable this option, use `set -o huponexit`. This will send **SIGHUP** to all background jobs when
exiting the shell. If a background job is stopped, that job will be resumed with a **SIGCONT**
before being sent a **SIGHUP**.

Sag0Sag0 authored Dec 05, 2017 and Michael Aaron Murphy committed Dec 04, 2017

* Start adding manpages

* Add manpages for all builtins

* Fix so that changes pass tests

This is the next step towards using Ion as a library for an upcoming project.

- We now have a setup.ion script for performing more advanced setup/installations.
- If the documentation is installed, it is accessible via the ion-docs builtin.
- This requires that the user specifies a BROWSER variable
- Fixed a bug with the quote terminator

Leads to a major speed bonus for script executions, which have
no business creating and managing a context that they'll never
use. IE: the fibonacci script finishes in half the time as
before.

Supported keybindings from liner are vi and emacs.

Jack Fransham authored Apr 29, 2017 and Michael Aaron Murphy committed Apr 29, 2017

This is a pretty huge rework, replacing String with a custom SmallString
based on a SmallVec of bytes. Replacing newlines with spaces is now done
in-place, and most (for some value of "most") strings can now be stored
on the stack. This should reduce allocator load, but it also improves
cache locality. Whatever the real reason is, each of these changes
provides a real, measurable speed boost, and they combine to give an
improvement of something like 20-25%, meaning we're now 30-35% faster
than Dash. This is a breaking change, replacing some uses of String with
SmallString or &str in the public API, but I'm pretty sure no-one's
hooking into our public API anyway so that should be OK.