In order to create an array with the let command, arrays must be wrapped within [ and ] characters, like so:

let array = [ 1 2 3 ]
let copy_of_array = [  ]

Otherwise, if array arguments are passed to let but not wrapped within [ and ] characters, then the array arguments will be joined together as a string, with spaces between each element.

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Shell::readln now completes to a filename if the last word is a file

- This allows situations like "./foo" to complete to a local directory
"./foobar"
- I'm not sure how efficient this is compared to the old competion, I'm
guessing not very.

* Have completion be relative to the current directory

* Remove random newline

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Refactored `array_expand` to be more concise / efficient

- `array_expand` now serves as the entry for operating on a set of
elements and returning an array
- Fixed a bug where negative indicies were using the wrong length, the
pre-expansion length
- Added a regression test for the above

* Factor out common subexpression

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Add grapheme, bytes, and char string -> array methods, with refactor

- Adds in the `@graphemes` `@chars`, and `@bytes` functions, which
create arrays of string variables corresponding to graphemes, unicode
scalars, and bytes respectively
- Add in start of select refactor

* Add tests for new string methods

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Remove extra read increment in glob branch

* Add test for globbing

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Make calc functions public to crate

* Add arithmetic expressions to shell grammar

* Fix failing test

* Add test in syntax_errors for calc

* Add test for expanding arithmetic subexpression

* calc -> arith_expression

* Add parser::words test for arithmetic

* indent if branch

Implements the `$len()` and `$len_bytes()` methods for strings, and
the `@len()` method for arrays. The len method for arrays returns
the number of elements in the array. The len method for strings
returns the number of graphemes in the string, whereas the
len_bytes method returns the number of bytes the string occupies.

Now, when the SIGINT signal is received, it will be handled by
aborting the execution of logic in the control flow.

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Hide tokio behind gate for redox

* Move common shell logic to 'inner_main'

* Move tokio stuffs to cfg gate

* Move futures dependency to not(target_os = redox) gate

This change implements the foundations for handling signals.
Specifically, only the SIGINT signal is being handled right now.
SIGINT will kill active child processes, but it will not yet
break control flow.

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Added support for braced arrays

* VBRACE flag now set when parsing braced array

* Extend parser::statements::braced_variables test

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Add case for ending a braced variable

This catch-all branch will always grab `}`, which is a valid ending to a
braced variable.

* Add test for braced variables

* Move ending brace logic to separate branch

Only allow implicit cd if the path starts with either a '.' or '/'; or
ends with a '/'.

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Move `export` from builtin to grammar

* Refactor common parts of `let` and `export` logic

* `export` now prints `env`

Jason Bowen authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Updated README.md to include vi and emacs keybindings as completed
features.

* Fixed typo in 'Using Variables' example code.