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Erlang Development Tool Suite
License: GNU Lesser General Public License v3.0
This project forked from sebastiw/edts
Erlang Development Tool Suite
License: GNU Lesser General Public License v3.0
__ __ | \ | \ ______ ____| $$ _| $$_ _______ / \ / $$| $$ \ / \ | $$$$$$\| $$$$$$$ \$$$$$$ | $$$$$$$ | $$ $$| $$ | $$ | $$ __ \$$ \ | $$$$$$$$| $$__| $$ | $$| \ _\$$$$$$\ \$$ \ \$$ $$ \$$ $$| $$ \$$$$$$$ \$$$$$$$ \$$$$ \$$$$$$$ -- The Erlang Development Tool Suite -- ## License ## Copyright (C) 2012 by Thomas Järvstrand, Håkan Nilsson 2013 by Thomas Järvstrand EDTS is licensed under the Lesser Gnu General Public License. See COPYING.LESSER for details. ## Introduction ## The Erlang Development Tool Suite (EDTS) is a package of useful development tools for working with the Erlang programming language in Emacs. It bundles a number of useful external packages, together with specialized Erlang plugins for them, and its own features to create a complete and efficient development environment that is easy to set up. Currently EDTS provides: - A snazzy erlang shell wrapper with syntax highlighting and auto-completion. - In-buffer flymake-like compilation - In-buffer xref checks - Dialyzer integration - Rudimentary project support - Code navigation. - Auto-completion, using auto-complete-mode - Auto-highlighting, using auto-highlight-mode - Convenient access to Erlang documentation - In-buffer running of unit tests - A usable interface to the erlang debugger For more information, hit M-x describe-minor-mode RET edts-mode RET. ## Getting started ## - Requirements: - Emacs 23.3 or later (24.2 recommended) - First of all, ensure your environment is setup correctly: - If you're not using Linux, setup Erlang mode according to the instructions here: http://www.erlang.org/doc/apps/tools/erlang_mode_chapter.html. - Make sure your code is compiled with the debug_info option set. - Get EDTS: $git clone git://github.com/tjarvstrand/edts.git $cd edts $make - Make sure EDTS is loaded and started in your .emacs: (add-to-list 'load-path "<path-to-edts-repo>") (require 'edts-start) - Configure your projects. EDTS projects configured by creating a file called .edts in your project's root. The configuration file is a number of lines, where each line is in the format: :<property> <value> Values that are lists must be prefixed with a single-quote, eg. '("lib"). See example below. The properties should all be strings, except lib-dirs and app-include-dirs which are lists of strings. Valid properties are: name The name of the project. Defaults to the last component of the project root-directory (eg a root set to "~/src/p" would yield "p" as the project name if not explicitly set. node-sname The erlang sname that the project's erlang node should have. It should contain only the part before the @-sign and defaults to same name as the project. lib-dirs A list of paths (relative to the project's root) where the project's code is located. All subdirectories of lib-dirs are assumed to be otp-applications. Defaults to '("lib"). start-command A custom command that EDTS should execute to start the project's Erlang node. If this is set, the command must set the node's sname to be the same as the value specified in the project's node-sname. The command must also not set the erlang cookie to anything other than the default ~/.erlang.cookie. Defaults to "erl -sname <node-sname>". otp-path The path to any custom OTP-version to use for the project. You only have to set this if the project uses a different OTP-release than the one that comes first in your `exec-path'. The OTP-release's bin-directory will be added to the head of the exec-path and the PATH environment variable when starting the project node. dialyzer-plt The path to any custom plt on which to base dialyzer analyses on. You only have to set this if the plt in dialyzer's default location ($DIALYZER_PLT or $HOME/.dialyzer_plt, in that order) is not appropriate for the project. The plt-file will not be overwritten. app-include-dirs A list of directories to search for include files inside each application. Eg. if set to '("include"), files in any application's include directory can be included with -include("file.hrl") instead of -include("../file.hrl"). This is useful if you have a build configuration that sets up your paths for you during your normal build process. If set, '("include") is usually the only reasonable value for this property. project-include-dirs A list of directories to search for include files inside at the project-level. Eg. if set to '("test/include"), files in any module can include files from <project-root>/test/include with just a -include("file.hrl"). This is useful if you have a build configuration that sets up your paths for you during your normal build process. Example configuration: :name "awesome_stuff" :node-sname "awesome" :lib-dirs '("lib" "test") :app-include-dirs '("include") :project-include-dirs '("test/shared/include") Local modifications to project configurations can be done to project configurations in two ways: - Edit the project configuration file directly. If you do this in Emacs, the project will be automatically re-initialized as soon as you save the .edts- file. - Add overrides by calling `edts-project-override' in your .emacs. `edts-project-override' takes a project-root and a plist of configuration values to override. Example: (edts-project-override "~/my-project" '(:name "my-project-dev" :node-sname "my-project-dev") :lib-dirs '("lib" "test" "hacks")) - Get the Erlang documentation (optional). - This is now a guided procedure. Just hit M-x edts-man-setup RET and follow the instructions. NB. Requires an internet connection and the process will make a small change to you .emacs-file. That should be all it takes. If it's not, please report any issues on github. ## Backward compatibility note ## If you have previously configured EDTS 'the old way' in `edts-projects', you can still keep this configuration and everything should work as before. However, EDTS will conveniently convert your old configuration and create a .edts-file in your project root. You can turn off this behaviour by setting `edts-project-inhibit-conversion' to a non-nil value. ## How it works ## Once set up, EDTS will automatically fire up it's own Erlang node when you start your Emacs. Once you open the first file that is located inside one of your projects, then EDTS will automatically fire up the corresponding project node and initiate communication between the EDTS-node and the project-node. If a node with the same name as the project's node is already registered with the Erlang port mapper daemon (epmd), then EDTS will initiate communication with that node instead. The EDTS node exposes a REST-interface (using webmachine) through which emacs can then communicate with the project node. ## EDTS and Distel ## EDTS is meant to be a able to replace Distel but only provides part of the most commonly used of Distel's features, specifically the equivalents of erl-find-module, erl-find-source-under-point, erl-who-calls and erl-refactor-subfunction. As far as I know, those are the only Distel features that 98% of people use, but if there is anything from Distel that you are missing in EDTS, please let me know. If you are using EDTS, please remove Distel from your configuration, since running both can create some confusion. ## Known Issues ## Some users are experiencing serious performance issues with the auto-completion during the first use after startup. This is usually solved by typing C-g a couple (two or three, it seems to vary) of times when Emacs "hangs" the first time. It is most likely caused by a bug in the emacs c-code that affects the auto-complete package. If you experience these issues, it's recommended to switch to emacs 24.2 where the problem is fixed [1], but if the problems persist, any help in debugging the issue would be appreciated since I have never myself been able to reproduce it. When killing some buffers, Emacs 23 decides to move point to (point-max) in a seemingly completely unrelated buffer. This will sometimes happen as an effect of EDTS' after-save-hook. The issue does not exist in Emacs 24. [1] auto-complete/auto-complete#153
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