add git-extras plugin

plugins/git-extras/git-extras.plugin.zsh

+#compdef git
+# ------------------------------------------------------------------------------
+# Description
+# -----------
+#
+#  Completion script for git-extras (http://github.com/visionmedia/git-extras).
+#
+# ------------------------------------------------------------------------------
+# Authors
+# -------
+#
+#  * Alexis GRIMALDI (https://github.com/agrimaldi)
+#
+# ------------------------------------------------------------------------------
+# Inspirations
+# -----------
+#
+#  * git-extras (http://github.com/visionmedia/git-extras)
+#  * git-flow-completion (http://github.com/bobthecow/git-flow-completion)
+#
+# ------------------------------------------------------------------------------
+
+
+__git_command_successful () {
+    if (( ${#pipestatus:#0} > 0 )); then
+        _message 'not a git repository'
+        return 1
+    fi
+    return 0
+}
+
+
+__git_tag_names() {
+    local expl
+    declare -a tag_names
+    tag_names=(${${(f)"$(_call_program branchrefs git for-each-ref --format='"%(refname)"' refs/tags 2>/dev/null)"}#refs/tags/})
+    __git_command_successful || return
+    _wanted tag-names expl tag-name compadd $* - $tag_names
+}
+
+
+__git_branch_names() {
+    local expl
+    declare -a branch_names
+    branch_names=(${${(f)"$(_call_program branchrefs git for-each-ref --format='"%(refname)"' refs/heads 2>/dev/null)"}#refs/heads/})
+    __git_command_successful || return
+    _wanted branch-names expl branch-name compadd $* - $branch_names
+}
+
+
+__git_feature_branch_names() {
+    local expl
+    declare -a branch_names
+    branch_names=(${${(f)"$(_call_program branchrefs git for-each-ref --format='"%(refname)"' refs/heads/feature 2>/dev/null)"}#refs/heads/feature/})
+    __git_command_successful || return
+    _wanted branch-names expl branch-name compadd $* - $branch_names
+}
+
+
+__git_refactor_branch_names() {
+    local expl
+    declare -a branch_names
+    branch_names=(${${(f)"$(_call_program branchrefs git for-each-ref --format='"%(refname)"' refs/heads/refactor 2>/dev/null)"}#refs/heads/refactor/})
+    __git_command_successful || return
+    _wanted branch-names expl branch-name compadd $* - $branch_names
+}
+
+
+__git_bug_branch_names() {
+    local expl
+    declare -a branch_names
+    branch_names=(${${(f)"$(_call_program branchrefs git for-each-ref --format='"%(refname)"' refs/heads/bug 2>/dev/null)"}#refs/heads/bug/})
+    __git_command_successful || return
+    _wanted branch-names expl branch-name compadd $* - $branch_names
+}
+
+
+__git_submodule_names() {
+    local expl
+    declare -a submodule_names
+    submodule_names=(${(f)"$(_call_program branchrefs git submodule status | awk '{print $2}')"})
+    __git_command_successful || return
+    _wanted submodule-names expl submodule-name compadd $* - $submodule_names
+}
+
+
+__git_author_names() {
+    local expl
+    declare -a author_names
+    author_names=(${(f)"$(_call_program branchrefs git log --format='%aN' | sort -u)"})
+    __git_command_successful || return
+    _wanted author-names expl author-name compadd $* - $author_names
+}
+
+
+_git-changelog() {
+    _arguments \
+        '(-l --list)'{-l,--list}'[list commits]' \
+}
+
+
+_git-effort() {
+    _arguments \
+        '--above[ignore file with less than x commits]' \
+}
+
+
+_git-contrib() {
+    _arguments \
+        ':author:__git_author_names'
+}
+
+
+_git-count() {
+    _arguments \
+        '--all[detailed commit count]'
+}
+
+
+_git-delete-branch() {
+    _arguments \
+        ':branch-name:__git_branch_names'
+}
+
+
+_git-delete-submodule() {
+    _arguments \
+        ':submodule-name:__git_submodule_names'
+}
+
+
+_git-delete-tag() {
+    _arguments \
+        ':tag-name:__git_tag_names'
+}
+
+
+_git-extras() {
+    local curcontext=$curcontext state line ret=1
+    declare -A opt_args
+
+    _arguments -C \
+        ': :->command' \
+        '*:: :->option-or-argument' && ret=0
+
+    case $state in
+        (command)
+            declare -a commands
+            commands=(
+                'update:update git-extras'
+            )
+            _describe -t commands command commands && ret=0
+            ;;
+    esac
+
+    _arguments \
+        '(-v --version)'{-v,--version}'[show current version]' \
+}
+
+
+_git-graft() {
+    _arguments \
+        ':src-branch-name:__git_branch_names' \
+        ':dest-branch-name:__git_branch_names'
+}
+
+
+_git-squash() {
+    _arguments \
+        ':branch-name:__git_branch_names'
+}
+
+
+_git-feature() {
+    local curcontext=$curcontext state line ret=1
+    declare -A opt_args
+
+    _arguments -C \
+        ': :->command' \
+        '*:: :->option-or-argument' && ret=0
+
+    case $state in
+        (command)
+            declare -a commands
+            commands=(
+                'finish:merge feature into the current branch'
+            )
+            _describe -t commands command commands && ret=0
+            ;;
+        (option-or-argument)
+            curcontext=${curcontext%:*}-$line[1]:
+            case $line[1] in
+                (finish)
+                    _arguments -C \
+                        ':branch-name:__git_feature_branch_names'
+                    ;;
+            esac
+    esac
+}
+
+
+_git-refactor() {
+    local curcontext=$curcontext state line ret=1
+    declare -A opt_args
+
+    _arguments -C \
+        ': :->command' \
+        '*:: :->option-or-argument' && ret=0
+
+    case $state in
+        (command)
+            declare -a commands
+            commands=(
+                'finish:merge refactor into the current branch'
+            )
+            _describe -t commands command commands && ret=0
+            ;;
+        (option-or-argument)
+            curcontext=${curcontext%:*}-$line[1]:
+            case $line[1] in
+                (finish)
+                    _arguments -C \
+                        ':branch-name:__git_refactor_branch_names'
+                    ;;
+            esac
+    esac
+}
+
+
+_git-bug() {
+    local curcontext=$curcontext state line ret=1
+    declare -A opt_args
+
+    _arguments -C \
+        ': :->command' \
+        '*:: :->option-or-argument' && ret=0
+
+    case $state in
+        (command)
+            declare -a commands
+            commands=(
+                'finish:merge bug into the current branch'
+            )
+            _describe -t commands command commands && ret=0
+            ;;
+        (option-or-argument)
+            curcontext=${curcontext%:*}-$line[1]:
+            case $line[1] in
+                (finish)
+                    _arguments -C \
+                        ':branch-name:__git_bug_branch_names'
+                    ;;
+            esac
+    esac
+}
+
+
+zstyle ':completion:*:*:git:*' user-commands \
+    changelog:'populate changelog file with commits since the previous tag' \
+    contrib:'display author contributions' \
+    count:'count commits' \
+    delete-branch:'delete local and remote branch' \
+    delete-submodule:'delete submodule' \
+    delete-tag:'delete local and remote tag' \
+    extras:'git-extras' \
+    graft:'merge commits from source branch to destination branch' \
+    squash:'merge commits from source branch into the current one as a single commit' \
+    feature:'create a feature branch' \
+    refactor:'create a refactor branch' \
+    bug:'create a bug branch' \
+    summary:'repository summary' \
+    effort:'display effort statistics' \
+    repl:'read-eval-print-loop' \
+    commits-since:'list commits since a given date' \
+    release:'release commit with the given tag' \
+    alias:'define, search and show aliases' \
+    ignore:'add patterns to .gitignore' \
+    info:'show info about the repository' \
+    create-branch:'create local and remote branch' \
+    fresh-branch:'create empty local branch' \
+    undo:'remove the latest commit' \
+    setup:'setup a git repository' \
+    touch:'one step creation of new files' \
+    obliterate:'Completely remove a file from the repository, including past commits and tags' \
+    local-commits:'list unpushed commits on the local branch' \