Added sbt completions

(cherry picked from commit a43da0163a)

share/completions/sbt.fish

@@ -0,0 +1,74 @@
+############
+# COMMANDS #
+############
+
+# 1. In general it's not recommended to run commands one by one, because sbt startup is quite slow
+# 2. Only commands without arguments are completed, because any commands with args have to be quoted: `sbt "show key"`
+# 3. Only those commands are completed that could be useful to run as one off, like `sbt new ...`, the rest should be run in an interactive sbt shell
+# 4. Tasks is somewhat dynamic and depends on the project definition, so only most common are offered
+# 5. Same about settings (none are offered)
+
+# These commands can be combined in any order
+complete -c sbt -f -a '(string split "\n" "
+    about            Display basic information about sbt and the build
+    clean            Delete files produced by the build
+    compile          Compile sources
+    console          Scala REPL: project classes
+    consoleQuick     Scala REPL: only project dependencies
+    doc              Generate API documentation
+    help             Display help message
+    package          Produce the main artifact
+    plugins          List currently available plugins
+    projects         List the names of available projects
+    publish          Publish artifacts to a repository
+    publishLocal     Publish artifacts to the local Ivy repository
+    publishM2        Publish artifacts to the local Maven repository
+    run              Run a main class
+    settings         List the settings defined for the current project
+    shell            Launch an interactive sbt prompt
+    tasks            List the tasks defined for the current project
+    test             Execute all tests
+" | string trim | string replace -r "\s+" "\t")' \
+    -n 'not contains -- "new" (commandline -cpo);
+    and not contains -- "client" (commandline -cpo)'
+
+# These cannot be combined with any other commands and require an argument
+complete -c sbt -f -n '[ (count (commandline -cpo)) = 1 ]' -a 'new'    -d 'Create a new sbt project from the given template'
+complete -c sbt -f -n '[ (count (commandline -cpo)) = 1 ]' -a 'client' -d 'Connect to a server with an interactive sbt prompt'
+
+
+###########
+# OPTIONS #
+###########
+
+# This is based on the output of `sbt -help`:
+
+# general options without arguments
+complete -c sbt -o help    -s h  -f -d "Print options help message"
+complete -c sbt -o verbose -s v  -f -d "Print more details"
+complete -c sbt -o debug   -s d  -f -d "Set log level to debug"
+complete -c sbt -o no-colors     -f -d "Disable ANSI color codes"
+complete -c sbt -o sbt-create    -f -d "Launch even if there's no sbt project"
+complete -c sbt -o no-share      -f -d "Use all local caches"
+complete -c sbt -o no-global     -f -d "Use global caches, but not global ~/.sbt directory"
+complete -c sbt -o batch         -f -d "Disable interactive mode"
+
+# general options with arguments
+complete -c sbt -o sbt-dir  -d "Specify path to global settings/plugins"       -r # path
+complete -c sbt -o sbt-boot -d "Specify path to shared boot directory"         -r # path
+complete -c sbt -o ivy      -d "Specify path to local Ivy repository"          -r # path
+complete -c sbt -o mem      -d "Set memory options"                            -x # integer? (default: -Xms1024m -Xmx1024m -XX:ReservedCodeCacheSize=128m -XX:MaxPermSize=256m)
+complete -c sbt -o port     -d "Turn on JVM debugging, open at the given port" -r # port
+
+# sbt version
+complete -c sbt -o sbt-version  -d "Use specified version of sbt"          -x -a '0.13.(seq 0 6)\t"" 1.0.0\t""'
+complete -c sbt -o sbt-jar      -d "Use specified jar as the sbt launcher" -r # jar path
+complete -c sbt -o sbt-rc       -d "Use an RC version of sbt"              -f
+complete -c sbt -o sbt-snapshot -d "Use a snapshot version of sbt"         -f
+
+# java-related
+complete -c sbt -o java-home -d "Alternate JAVA_HOME"                         -r # path
+complete -c sbt -o D         -d "Pass -D option directly to the Java runtime" -x # -Dkey=val
+complete -c sbt -o J-X       -d "Pass -X option directly to the Java runtime" -x # -X*
+complete -c sbt -o S-X       -d "Pass -X option to sbt's scalacOptions"       -x # -X*
+# TODO: list available -X options if it's possible to do in an automatic way