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RELEASE_NOTES.md

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Version 0.8.0

  • Jupyter kernel now shows errors and warnings inline as you type by running cargo check on the backend. Running evcxr\_jupyter --install before starting jupyter notebook is recommended. It will auto-update when the evcxr jupyter kernel starts, however that update may not effect the current session.
  • Fixed :clear command.
  • Work around imprecise timestamps on Macs that use a HPFS filesystem
  • Added :toolchain command to allow specifying rust compiler toolchains (e.g. "nightly").
  • Added :offline to turn on offline mode when running Cargo.
  • Various improvements to error reporting.

Version 0.7.0

  • Fixed a number of bugs in tab completion.
  • Documentation improvements. Thanks Ibraheem!
  • Fixed a panic when doing tab completion after loading a crate with a hyphenated name.
  • Changed internal parsing logic to use rust-analyzer instead of syn (reduced binary size from 24MB to 20MB).
  • Improved semantics for use statements. e.g. use a::{b, c}; followed by use a::{b, c, d} now won't give you errors.
  • API changes in the evcxr crate (used by the repl and jupyter kernel).

Version 0.6.0

  • Support for rustc 1.48.
  • Tab completion based on rust-analyzer (in both Jupyter kernel and REPL).
  • Minimum rust version is now 1.46
  • Now requires rust-src component
    • rustup component add rust-src
  • Jupyter kernel now supports prompting for input.
  • REPL now supports the quit command. Thanks komi

Version 0.5.3

  • Fix for a crash in the REPL when certain multiline error were encountered.
  • REPL now supports --edit-mode vi thanks to aminroosta
  • REPL now has history-based tab completion thanks to aminroosta

Version 0.5.2

  • Works on FreeBSD. Thanks dmilith!
  • Multiline errors look much better in the REPL thanks to aminroosta!
  • Improved cursor navigation in REPL thanks to Ma27!

Version 0.5.1

  • Fixed colored text outputs on Windows. Thanks Mirko and Dmitry!

Version 0.5.0

  • Supports async / await using Tokio as the executor.
  • Question mark operator can now be used (errors are printed to stderr).
  • Now requires rustc >= 1.40.0
  • REPL now support multiline input (thanks Thom Chiovoloni!)
  • Don't use lld on MacOS, it's broken (thanks Thom Chiovoloni for figuring this out)

Version 0.4.7

  • Fixed segfault if executing code without variables followed by code with variables.
  • Automatically use lld if it's installed. Use :linker command to override.
  • Handle variables that contain type inference placeholders _.
  • Added support for overriding the config dir with the environment variable EVCXR_CONFIG_DIR (thanks Thom Chiovoloni).
  • Run prelude.rs after init.evcxr if one exists (thanks Thom Chiovoloni).
  • Allow output format to be specified. e.g. :fmt {:#?} (thanks κeen)

Version 0.4.6

  • Fixes to work with rust 1.41
  • Improved handling of cargo workspaces.
  • Now works if the user has overridden Cargo's default target directory (thanks Aloxaf).
  • Fixed prompt color (thanks Dmitry Murzin).
  • Added a flag to disable use of readline (thanks Dmitry Murzin).
  • Fix for binder (thanks Luiz Irber)

Version 0.4.5

  • Escape reserved words "async" and "try" when encountered in types.
  • Use vendored ZMQ library by default.

Version 0.4.4

  • Now support sccache.
  • These release notes previously said that this release added support for mixing commands like :dep with code. That feature was actually added a long time ago by David Bernard. Thanks David, and sorry for the confusion.

Version 0.4.3

  • No longer preserves variables on panic by default.
    • Turns out this was significantly slowing down compilation.
    • You can get back the old behavior with :preserve_vars_on_panic 1
    • Put that in your ~/.config/evcxr/init.evcxr or equivalent to always have it.
  • Optimization is now back on by default. With the above change, there's now not really any noticable difference in eval times for small amounts of code.

Version 0.4.2

  • Fixed runtime error on windows due to something not liking the dll having been renamed.
  • Added option :preserve_vars_on_panic, which still defaults to on, but which if turned off will speed up some compilations at the expense of all variables being lost if a panic occurs.

Version 0.4.1

  • Revert change to not preserve copy variables on panic as it broke mutation of copy variables. Will reenable in future once it's properly fixed.

Version 0.4.0

  • Optimization is now off by default, since many people using a REPL or Jupyter kernel are experimenting and faster compile times are more important than faster runtimes.
    • If you want it always on, see README.md for how to do that.
  • New execution model.
    • A single crate is now reused for all compilation. This is a bit faster than the old model where each execution was a separate crate that had a dependency on the previous crates.
    • Defined items no longer need to be pub.
  • Optimization level can now be set (as opposed to just toggled).
  • Reads commands (one per line) from a startup file.
    • e.g. ~/.config/evcxr/init.evcxr (on Linux)
  • Now uses Rust 2018 edition.
  • Don't preserve variables that are Copy on panic.
    • Results in a small speedup in some evaluation times.
    • If you really want this, you can opt back in via :preserve_copy_types.

Version 0.3.5

  • Fix for another upcoming cargo change (due in 1.37).

Version 0.3.4

  • Fix with upcomming beta release (1.36) where Cargo started intercepting and wrapping JSON errors from the compiler.
  • Give proper error message if a closure or an impl trait is stored into a variable.
  • Recover from compilation failure in a case where we previously got out-of-sync with what variables should exist.

Version 0.3.3

  • Windows and Mac support! Big thanks to Daniel Griffen for the final fixes and David Bernard for Travis setup.

Version 0.3.1

  • Fixed handling of crates with "-" in their name.
  • Support relative crate paths.
  • Don't error if the same extern crate is given multiple times with slightly different formatting.

Version 0.3.0

  • Fix optimization (wasn't actually working before for some reason).
  • Give better error message if rustc suggests a private type for a variable.
  • Allow variables to be given explicit types.
  • A couple of fixes for Windows (probaly not enough for it to actually work though, but it's a start).
  • Support for running in Binder.

Version 0.2.0

  • :dep no longer automatically adds extern crate. extern crate still automatically adds a dependency, but only if there isn't already a library with the specified name.
  • Including ":help" command now works properly in the Jupyter kernel.
  • Various fixes related to running on MacOS.
  • Numerous other improvements to the Jupyter kernel, in particular making it work with Jupyter Lab.