SBT and Scala plugins.

The SBT (Simple Build Tool: scala-sbt.org) plugin is an original
work of mine.
The Scala (scala-lang.org) plugin was taken from zsh-lovers.

plugins/sbt/_sbt

+#compdef sbt
+#autoload
+
+local -a _sbt_commands
+_sbt_commands=(
+  'clean:delete files produced by the build'
+  'compile:compile sources'
+  'console:start the Scala REPL with project classes on the classpath'
+  'console-quick:start the Scala REPL with project deps on the classpath'
+  'console-project:start the Scala REPL w/sbt+build-def on the classpath'
+  'dist:generate distribution artifacts'
+  'dist\:clean:clean distribution artifacts'
+  'doc:generate API documentation'
+  'gen-idea:generate Intellij Idea project files'
+  'package:produce the main artifact, such as a binary jar'
+  'package-doc:produce a doc artifact, such as a jar containing API docs'
+  'package-src:produce a source artifact, such as a jar containing sources'
+  'publish:publish artifacts to a repository'
+  'publish-local:publish artifacts to the local repository'
+  'run:run a main class'
+  'run-main:run the main class selected by the first argument'
+  'test:execute all tests'
+  'test-only:execute the tests provided as arguments'
+  'test-quick:execute previously failed tests'
+  'update:resolve and optionally retrieve dependencies'
+)
+
+local expl
+
+_arguments \
+  '(-help)-h[prints an help message]' \
+  '(-h)-help[prints an help message]' \
+  '(-verbose)-v[this runner is chattier]' \
+  '(-v)-verbose[this runner is chattier]' \
+  '(-debug)-d[set sbt log level to debug]' \
+  '(-d)-debug[set sbt log level to debug]' \
+  '-no-colors[disable ANSI color codes]' \
+  '-sbt-create[start even if current dir contains no sbt project]' \
+  '-sbt-dir[path to global settings/plugins dir (default: ~/.sbt)]' \
+  '-sbt-boot[path to shared boot dir (default: ~/.sbt/boot)]' \
+  '-ivy[path to local Ivy repository (default: ~/.ivy2)]' \
+  '-mem[set memory options]' \
+  '-no-share[use all local caches; no sharing]' \
+  '-no-global[use global caches, but do not use global ~/.sbt dir]' \
+  '-jvm-debug[turn on JVM debugging, open at the given port]' \
+  '-batch[disable interactive mode]' \
+  '-sbt-version[use the specified version of sbt]' \
+  '-sbt-jar[use the specified jar as the sbt launcher]' \
+  '(-sbt-snapshot)-sbt-rc[use an RC version of sbt]' \
+  '(-sbt-rc)-sbt-snapshot[use a snapshot version of sbt]' \
+  '-java-home[alternate JAVA_HOME]' \
+  '*:: :->subcmds' && return 0
+
+_describe -t commands "sbt subcommand" _sbt_commands
+return

plugins/sbt/sbt.plugin.zsh

+# ------------------------------------------------------------------------------
+#          FILE:  sbt.plugin.zsh
+#   DESCRIPTION:  oh-my-zsh plugin file.
+#        AUTHOR:  Mirko Caserta (mirko.caserta@gmail.com)
+#       VERSION:  1.0.2
+# ------------------------------------------------------------------------------
+ 
+# aliases - mnemonic: prefix is 'sb'
+alias sbc='sbt compile'
+alias sbco='sbt console'
+alias sbcq='sbt console-quick'
+alias sbcl='sbt clean'
+alias sbcp='sbt console-project'
+alias sbd='sbt doc'
+alias sbdc='sbt dist:clean'
+alias sbdi='sbt dist'
+alias sbgi='sbt gen-idea'
+alias sbp='sbt publish'
+alias sbpl='sbt publish-local'
+alias sbr='sbt run'
+alias sbrm='sbt run-main'
+alias sbu='sbt update'
+alias sbx='sbt test'

plugins/scala/_scala

+#compdef scala scalac
+# ------------------------------------------------------------------------------
+# Copyright (c) 2012 Github zsh-users - http://github.com/zsh-users
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#     * Neither the name of the zsh-users nor the
+#       names of its contributors may be used to endorse or promote products
+#       derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL ZSH-USERS BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# ------------------------------------------------------------------------------
+# Description
+# -----------
+#
+#  Completion script for scala and scalac (http://www.scala-lang.org/).
+#
+# ------------------------------------------------------------------------------
+# Authors
+# -------
+#
+#  * Tony Sloane <inkytonik@gmail.com>
+#
+# ------------------------------------------------------------------------------
+
+typeset -A opt_args
+local context state line
+
+_scala_features () {
+   compadd "postfixOps" "reflectiveCalls" "implicitConversions" "higherKinds" \
+     "existentials" "experimental.macros" "_"
+}
+
+_scala_phases () {
+   compadd "parser" "namer" "packageobjects" "typer" "patmat" "superaccessors" \
+     "extmethods" "pickler" "refchecks" "selectiveanf" "selectivecps" "uncurry" \
+     "tailcalls" "specialize" "explicitouter" "erasure" "posterasure" "lazyvals" \
+     "lambdalift" "constructors" "flatten" "mixin" "cleanup" "icode" "inliner" \
+     "inlineExceptionHandlers" "closelim" "dce" "jvm" "terminal"
+}
+
+local -a shared_opts
+shared_opts=(
+  "-bootclasspath+[Override location of bootstrap class files]:bootstrap class directory:_files -/"
+  "-classpath+[Specify where to find user class files]:directory:_files -/"
+  "-D-[Pass -Dproperty=value directly to the runtime system]"
+  "-d+[Destination for generated classfiles]: directory or jar file:_files"
+  "-dependencyfile+[Set dependency tracking file]:dependency tracking file:_files"
+  "-deprecation[Emit warning and location for usages of deprecated APIs]"
+  "-encoding+[Specify character encoding used by source files]:encoding:"
+  "-explaintypes[Explain type errors in more detail]"
+  "-extdirs+[Override location of installed extensions]:extensions directory:_files -/"
+  "-g\:-[Set level of generated debugging info (default\: vars)]:debugging info level:(none source line vars notailcalls)"
+  "-help[Print a synopsis of standard options]"
+  "-J-[pass argument directly to Java runtime system]:JVM argument:"
+  "-javabootclasspath+[Override java boot classpath]:Java boot class path directory]:_files -/"
+  "-javaextdirs+[Override java extdirs classpath]:Java extdirs directory:_files -/"
+  "-language\:-[Enable one or more language features]:feature:_scala_features"
+  "-no-specialization[Ignore @specialize annotations]"
+  "-nobootcp[Do not use the boot classpath for the scala jars]"
+  "-nowarn[Generate no warnings]"
+  "-optimise[Generate faster bytecode by applying optimisations to the program]"
+  "-P\:-[Pass an option to a plugin (written plugin\:opt)]:plugin option:"
+  "-print[Print program with Scala-specific features removed]"
+  "-sourcepath+[Specify location(s) of source files]:source file directory:_files -/"
+  "-target\:-[Target platform for object files (default\: jvm-1.5)]:platform name:(jvm-1.5 msil)"
+  "-toolcp+[Add to the runner classpath]:directory:_files -/"
+  "-unchecked[Enable detailed unchecked (erasure) warnings]"
+  "-uniqid[Uniquely tag all identifiers in debugging output]"
+  "-usejavacp[Utilize the java.class.path in classpath resolution]"
+  "-verbose[Output messages about what the compiler is doing]"
+  "-version[Print product version and exit]"
+  "-X[Print a synopsis of advanced options]"
+  "-Y[Print a synopsis of private options]"
+)
+
+local -a X_opts
+X_opts=(
+  "-Xcheck-null[Warn upon selection of nullable reference]"
+  "-Xcheckinit[Wrap field accessors to throw an exception on uninitialized access]"
+  "-Xdisable-assertions[Generate no assertions or assumptions]"
+  "-Xelide-below+[Calls to @elidable methods are omitted if method priority is lower than integer argument]"
+  "-Xexperimental[Enable experimental extensions]"
+  "-Xfatal-warnings[Fail the compilation if there are any warnings]"
+  "-Xfull-lubs[Retains pre 2.10 behavior of less aggressive truncation of least upper bounds]"
+  "-Xfuture[Turn on future language features]"
+  "-Xgenerate-phase-graph+[Generate the phase graphs (outputs .dot files) to fileX.dot]:output file:_files"
+  "-Xlint[Enable recommended additional warnings]"
+  "-Xlog-free-terms[Print a message when reification creates a free term]"
+  "-Xlog-free-types[Print a message when reification resorts to generating a free type]"
+  "-Xlog-implicits[Show more detail on why some implicits are not applicable]"
+  "-Xlog-implicit-conversions[Print a message whenever an implicit conversion is inserted]"
+  "-Xlog-reflective-calls[Print a message when a reflective method call is generated]"
+  "-Xmacro-settings\:-[Custom settings for macros]:option"
+  "-Xmain-class+[Class for manifest's Main-Class entry (only useful with -d jar)]:path:"
+  "-Xmax-classfile-name+[Maximum filename length for generated classes]"
+  "-Xmigration[Warn about constructs whose behavior may have changed]"
+  "-Xno-forwarders[Do not generate static forwarders in mirror classes]"
+  "-Xno-patmat-analysis[Don't perform exhaustivity/unreachability analysis. Also, ignore @switch annotation]"
+  "-Xno-uescape[Disable handling of \u unicode escapes]"
+  "-Xnojline[Do not use JLine for editing]"
+  "-Xoldpatmat[Use the pre-2.10 pattern matcher. Otherwise, the 'virtualizing' pattern matcher is used in 2.10]"
+  "-Xprint\:-[Print out program after <phase>]:phase name:_scala_phases"
+  "-Xprint-icode\:-[Log internal icode to *.icode files after phase (default\: icode)]:phase name:_scala_phases"
+  "-Xprint-pos[Print tree positions, as offsets]"
+  "-Xprint-types[Print tree types (debugging option)]"
+  "-Xprompt[Display a prompt after each error (debugging option)]"
+  "-Xresident[Compiler stays resident: read source filenames from standard input]"
+  "-Xscript+[Treat the source file as a script and wrap it in a main method]:main object name"
+  "-Xshow-class+[Show internal representation of class]:class name"
+  "-Xshow-object+[Show internal representation of object]:object name"
+  "-Xshow-phases[Print a synopsis of compiler phases]"
+  "-Xsource-reader+[Specify a class name for a custom method of reading source files]:class name"
+  "-Xverify[Verify generic signatures in generated bytecode]"
+
+  "-Xassem-extdirs+[List of directories containing assemblies (requires -target:msil) (default\: lib)]:assembly directory:_files -/"
+  "-Xassem-name+[Name of the output assembly (requires -target:msil)]:assembly name:_files"
+  "-Xassem-path+[List of assemblies referenced by the program (requires -target:msil)]:assembly path:_files"
+  "-Xsourcedir+[Mirror source folder structure in output directory (requires -target:msil)]:source directory:_files -/"
+
+  "-Xplugin\:-[Load one or more plugins from file]:plugin file:_files"
+  "-Xpluginsdir+[Path to search compiler plugins]:plugin directory:_files -/"
+  "-Xplugin-list[Print a synopsis of loaded plugins]"
+  "-Xplugin-disable\:-[Disable the given plugin(s)]"
+  "-Xplugin-require\:-[Abort unless the given plugin(s) are available]"
+)
+
+local -a Y_opts
+Y_opts=(
+  "-Y[Print a synopsis of private options]"
+  "-Ybuild-manager-debug[Generate debug information for the Refined Build Manager compiler]"
+  "-Ybuilder-debug\:-[Compile using the specified build manager (default\: none)]:build manager:(none refined simple)"
+  "-Yclosure-elim[Perform closure elimination]"
+  "-Ycompact-trees[Use compact tree printer when displaying trees]"
+  "-Ydead-code[Perform dead code elimination]"
+  "-Ydependent-method-types[Allow dependent method types]"
+  "-Ydump-classes+[Dump the generated bytecode to .class files (useful for reflective compilation that utilizes in-memory classloaders)]:output directory:_files -/"
+  "-Yeta-expand-keeps-star[Eta-expand varargs methods to T* rather than Seq[T].  This is a temporary option to ease transition.]"
+  "-Ygen-javap+[Generate a parallel output directory of .javap files]:output directory:_files -/"
+  "-Yinfer-argument-types[Infer types for arguments of overriden methods]"
+  "-Yinline[Perform inlining when possible]"
+  "-Yinline-handlers[Perform exception handler inlining when possible]"
+  "-Yinline-warnings[Emit inlining warnings (normally surpressed due to high volume)]"
+  "-Yinvalidate+[Invalidate classpath entry before run]:classpath entry"
+  "-Ylinearizer\:-[Linearizer to use (default\: rpo)]:linearizer:(normal dfs rpo dump)"
+  "-Ylog-classpath[Output information about what classpath is being applied]"
+  "-Yno-adapted-args[Do not adapt an argument list (either by inserting unit or creating a tuple) to match the receiver]"
+  "-Ymacro-debug-lite[Trace essential macro-related activities]"
+  "-Ymacro-debug-verbose[Trace all macro-related activities: compilation, generation of synthetics, classloading, expansion, exceptions]"
+  "-Yno-completion[Disable tab-completion in the REPL]"
+  "-Yno-generic-signatures[Suppress generation of generic signatures for Java]"
+  "-Yno-imports[Compile without any implicit imports]"
+  "-Yno-predef[Compile without importing Predef]"
+  "-Yno-self-type-checks[Suppress check for self-type conformance among inherited members]"
+  "-Yno-squeeze[Disable creation of compact code in matching]"
+  "-Ynotnull[Enable (experimental and incomplete) scala.NotNull]"
+  "-Yoverride-objects[Allow member objects to be overridden]"
+  "-Yoverride-vars[Allow vars to be overridden]"
+  "-Ypmat-naive[Desugar matches as naively as possible]"
+  "-Ypresentation-delay+[Wait number of ms after typing before starting typechecking]"
+  "-Ypresentation-log+[Log presentation compiler events into file]:log file:_files"
+  "-Ypresentation-replay+[Replay presentation compiler events from file]:log file:_files"
+  "-Ypresentation-strict[Do not report type errors in sources with syntax errors]"
+  "-Ypresentation-verbose[Print information about presentation compiler tasks]"
+  "-Yprofile-class+[Specify name of profiler class]:profiler class name"
+  "-Yprofile-memory[Heap snapshot after compiler run (requires jgpagent on JVM -agentpath)]"
+  "-Yrangepos[Use range positions for syntax trees]"
+  "-Yrecursion+[Set recursion depth used when locking symbols]"
+  "-Yreify-copypaste[Dump the reified trees in copypasteable representation]"
+  "-Yrepl-sync[Do not use asynchronous code for REPL startup]"
+  "-Yresolve-term-conflict\:-[Resolve term conflicts (default\: error)]:resolution strategy:(package object error)"
+  "-Yself-in-annots[Include a \"self\" identifier inside of annotations]"
+  "-Yshow\:-[Show after <phase> (requires -Xshow-class or -Xshow-object)]:phase name:_scala_phases"
+  "-Yshow-syms[Print the AST symbol hierarchy after each phase]"
+  "-Yshow-symkinds[Print abbreviated symbol kinds next to symbol names]"
+  "-Yshow-trees[Print detailed ASTs (requires -Xprint\:phase)]"
+  "-Yshow-trees-compact[Print detailed ASTs in compact form (requires -Xprint\:)]"
+  "-Yshow-trees-stringified[Print stringifications along with detailed ASTs (requires -Xprint\:)]"
+  "-Ystatistics[Print compiler statistics]"
+  "-Ystruct-dispatch\:-[Structural method dispatch policy (default\: poly-cache)]:policy name:(no-cache mono-cache poly-cache invoke-dynamic)"
+
+  "-Ybrowse\:-[Browse the abstract syntax tree after <phase>]:phase name:_scala_phases"
+  "-Ycheck\:-[Check the tree at the end of <phase>]:phase name:_scala_phases"
+  "-Ylog\:-[Log operations during <phase>]:phase name:_scala_phases"
+  "-Yprofile\:-[Profile CPU usage of given phases (requires jgpagent on JVM -agentpath)]:phase name:_scala_phases"
+  "-Yskip\:-[Skip <phase>]:phase name:_scala_phases"
+  "-Ystop-after\:-[Stop after given phase <phase>]:phase name:_scala_phases"
+  "-Ystop-before\:-[Stop before given phase <phase>]:phase name:_scala_phases"
+
+  "-Ywarn-adapted-args[Warn if an argument list is modified to match the receiver]"
+  "-Ywarn-all[Enable all -Y warnings]"
+  "-Ywarn-dead-code[Warn when dead code is identified]"
+  "-Ywarn-inaccessible[Warn about inaccessible types in method signatures]"
+  "-Ywarn-nullary-override[Warn when non-nullary overrides nullary, e.g. def foo() over def foo]"
+  "-Ywarn-nullary-unit[Warn when nullary methods return Unit]"
+  "-Ywarn-numeric-widen[Warn when numerics are widened]"
+  "-Ywarn-value-discard[Warn when non-Unit expression results are unused]"
+
+  "-Ybuild-manager-debug[Generate debug information for the Refined Build Manager compiler]"
+  "-Ybuilder-debug\:-[Compile using the specified build manager (default\: none)]:manager:(none refined simple)"
+  "-Ycompletion-debug[Trace all tab completion activity]"
+  "-Ydebug[Increase the quantity of debugging output]"
+  "-Ydoc-debug[Trace all scaladoc activity]"
+  "-Yide-debug[Generate, validate and output trees using the interactive compiler]"
+  "-Yinfer-debug[Trace type inference and implicit search]"
+  "-Yissue-debug[Print stack traces when a context issues an error]"
+  "-Ypatmat-debug[Trace pattern matching translation]"
+  "-Ypmat-debug[Trace all pattern matcher activity]"
+  "-Ypos-debug[Trace position validation]"
+  "-Ypresentation-debug[Enable debugging output for the presentation compiler]"
+  "-Yreify-debug[Trace reification]"
+  "-Yrepl-debug[Trace all REPL activity]"
+  "-Ytyper-debug[Trace all type assignments]"
+)
+
+local -a scala_opts
+scala_opts=(
+  "-e+[execute <string> as if entered in the repl]:string" \
+  "-howtorun+[what to run (default\: guess)]:execution mode:(script object jar guess)" \
+  "-i+[preload <file> before starting the repl]:file to preload:_files" \
+  "-nc[no compilation daemon\: do not use the fsc offline compiler]" \
+  "-save[save the compiled script in a jar for future use]"
+)
+
+case $words[$CURRENT] in
+    -X*) _arguments $X_opts;;
+    -Y*) _arguments $Y_opts;;
+      *) case $service in
+           scala)  _arguments $scala_opts $shared_opts "*::filename:_files";;
+           scalac) _arguments $shared_opts "*::filename:_files";;
+         esac
+esac
+
+return 0