Add git-flow completion for fish shell
diff --git a/git.fish b/git.fish
new file mode 100644
index 0000000..6a32e32
--- /dev/null
+++ b/git.fish
@@ -0,0 +1,195 @@
+#!fish
+#
+# git-flow-completion
+# ===================
+#
+# Fish completion support for [git-flow](http://github.com/nvie/gitflow)
+#
+# The contained completion routines provide support for completing:
+#
+# * git-flow init and version
+# * feature, hotfix and release branches
+# * remote feature, hotfix and release branch names
+#
+#
+# Installation
+# ------------
+#
+# To achieve git-flow completion nirvana:
+#
+# 1. Install this file it in your `~/.config/fish/completions` folder.
+#
+# 2. (If your shared fish completions aren't in `/usr/share/...` or `/usr/local/share/...`)
+# Edit the first line
+#
+#
+# The Fine Print
+# --------------
+#
+# Copyright (c) 2012 [Justin Hileman](http://justinhileman.com)
+#
+# Distributed under the [MIT License](http://creativecommons.org/licenses/MIT/)
+
+for prefix in /usr /usr/local
+ if test -f $prefix/share/fish/completions/git.fish
+ . $prefix/share/fish/completions/git.fish
+ break
+ end
+end
+
+if not functions -q __fish_git_branches
+ echo \nError: git completion not found >&2
+ exit
+end
+
+## Support functions
+
+function __fish_git_flow_using_command
+ set cmd (commandline -opc)
+ set subcommands 'flow' $argv
+ if [ (count $cmd) = (math (count $subcommands) + 1) ]
+ for i in (seq (count $subcommands))
+ if not test $subcommands[$i] = $cmd[(math $i + 1)]
+ return 1
+ end
+ end
+ return 0
+ end
+ return 1
+end
+
+function __fish_git_flow_prefix
+ git config "gitflow.prefix.$argv[1]" 2> /dev/null; or echo "$argv[1]/"
+end
+
+function __fish_git_flow_branches
+ set prefix (__fish_git_flow_prefix $argv[1])
+ __fish_git_branches | grep "^$prefix" | sed "s,^$prefix,," | sort
+end
+
+function __fish_git_flow_remote_branches
+ set prefix (__fish_git_flow_prefix $argv[1])
+ set origin (git config gitflow.origin 2> /dev/null; or echo "origin")
+ git branch -r 2> /dev/null | sed "s/^ *//g" | grep "^$origin/$prefix" | sed "s,^$origin/$prefix,," | sort
+end
+
+function __fish_git_flow_untracked_branches
+ set branches (__fish_git_flow_branches $argv[1])
+ for branch in (__fish_git_flow_remote_branches $argv[1])
+ if not contains $branch $branches
+ echo $branch
+ end
+ end
+end
+
+function __fish_git_flow_unpublished_branches
+ set branches (__fish_git_flow_remote_branches $argv[1])
+ for branch in (__fish_git_flow_branches $argv[1])
+ if not contains $branch $branches
+ echo $branch
+ end
+ end
+end
+
+
+## git-flow
+
+complete -f -c git -n '__fish_git_needs_command' -a flow -d 'Manage a git-flow enabled repository'
+complete -f -c git -n '__fish_git_flow_using_command' -a version -d 'Show version information'
+
+
+
+## git-flow init
+
+complete -f -c git -n '__fish_git_flow_using_command' -a init -d 'Initialize a new git repo with support for the branching model'
+complete -f -c git -n '__fish_git_flow_using_command init' -s f -d 'Force reinitialization'
+complete -f -c git -n '__fish_git_flow_using_command init' -s d -d 'Use default branch names'
+
+
+
+## git-flow feature
+
+complete -f -c git -n '__fish_git_flow_using_command' -a feature -d 'Manage feature branches'
+complete -f -c git -n '__fish_git_flow_using_command feature' -a list -d 'List feature branches'
+complete -f -c git -n '__fish_git_flow_using_command feature' -s v -d 'Verbose output'
+
+complete -f -c git -n '__fish_git_flow_using_command feature' -a start -d 'Start a new feature branch'
+complete -f -c git -n '__fish_git_flow_using_command feature start' -s F -d 'Fetch from origin first'
+
+complete -f -c git -n '__fish_git_flow_using_command feature' -a finish -d 'Finish a feature branch'
+complete -f -c git -n '__fish_git_flow_using_command feature finish' -s F -d 'Fetch from origin first'
+complete -f -c git -n '__fish_git_flow_using_command feature finish' -s r -d 'Rebase instead of merging'
+complete -f -c git -n '__fish_git_flow_using_command feature finish' -a '(__fish_git_flow_branches feature)' -d 'Feature branch'
+
+complete -f -c git -n '__fish_git_flow_using_command feature' -a publish -d 'Publish a feature branch to remote'
+complete -f -c git -n '__fish_git_flow_using_command feature publish' -a '(__fish_git_flow_unpublished_branches feature)' -d 'Feature branch'
+
+complete -f -c git -n '__fish_git_flow_using_command feature' -a track -d 'Checkout remote feature branch'
+complete -f -c git -n '__fish_git_flow_using_command feature track' -a '(__fish_git_flow_untracked_branches feature)' -d 'Feature branch'
+
+complete -f -c git -n '__fish_git_flow_using_command feature' -a diff -d 'Show all changes'
+
+complete -f -c git -n '__fish_git_flow_using_command feature' -a rebase -d 'Rebase against integration branch'
+complete -f -c git -n '__fish_git_flow_using_command feature rebase' -s i -d 'Do an interactive rebase'
+
+complete -f -c git -n '__fish_git_flow_using_command feature' -a checkout -d 'Checkout local feature branch'
+complete -f -c git -n '__fish_git_flow_using_command feature checkout' -a '(__fish_git_flow_branches feature)' -d 'Feature branch'
+
+complete -f -c git -n '__fish_git_flow_using_command feature' -a pull -d 'Pull changes from remote'
+complete -f -c git -n '__fish_git_flow_using_command feature pull' -a '(__fish_git_remotes)' -d 'Remote'
+
+
+
+## git-flow release
+
+complete -f -c git -n '__fish_git_flow_using_command' -a release -d 'Manage release branches'
+complete -f -c git -n '__fish_git_flow_using_command release' -a list -d 'List release branches'
+complete -f -c git -n '__fish_git_flow_using_command release' -s v -d 'Verbose output'
+
+complete -f -c git -n '__fish_git_flow_using_command release' -a start -d 'Start a new release branch'
+complete -f -c git -n '__fish_git_flow_using_command release start' -s F -d 'Fetch from origin first'
+
+complete -f -c git -n '__fish_git_flow_using_command release' -a finish -d 'Finish a release branch'
+complete -f -c git -n '__fish_git_flow_using_command release finish' -s F -d 'Fetch from origin first'
+complete -f -c git -n '__fish_git_flow_using_command release finish' -s s -d 'Sign the release tag cryptographically'
+complete -f -c git -n '__fish_git_flow_using_command release finish' -s u -d 'Use the given GPG-key for the digital signature (implies -s)'
+complete -f -c git -n '__fish_git_flow_using_command release finish' -s m -d 'Use the given tag message'
+complete -f -c git -n '__fish_git_flow_using_command release finish' -s p -d 'Push to $ORIGIN after performing finish'
+complete -f -c git -n '__fish_git_flow_using_command release finish' -a '(__fish_git_flow_branches release)' -d 'Release branch'
+
+complete -f -c git -n '__fish_git_flow_using_command release' -a publish -d 'Publish a release branch to remote'
+complete -f -c git -n '__fish_git_flow_using_command release publish' -a '(__fish_git_flow_unpublished_branches release)' -d 'Release branch'
+
+complete -f -c git -n '__fish_git_flow_using_command release' -a track -d 'Checkout remote release branch'
+complete -f -c git -n '__fish_git_flow_using_command release track' -a '(__fish_git_flow_untracked_branches release)' -d 'Release branch'
+
+
+
+## git-flow hotfix
+
+complete -f -c git -n '__fish_git_flow_using_command' -a hotfix -d 'Manage hotfix branches'
+complete -f -c git -n '__fish_git_flow_using_command hotfix' -a list -d 'List hotfix branches'
+complete -f -c git -n '__fish_git_flow_using_command hotfix' -s v -d 'Verbose output'
+
+complete -f -c git -n '__fish_git_flow_using_command hotfix' -a start -d 'Start a new hotfix branch'
+complete -f -c git -n '__fish_git_flow_using_command hotfix start' -s F -d 'Fetch from origin first'
+
+complete -f -c git -n '__fish_git_flow_using_command hotfix' -a finish -d 'Finish a hotfix branch'
+complete -f -c git -n '__fish_git_flow_using_command hotfix finish' -s F -d 'Fetch from origin first'
+complete -f -c git -n '__fish_git_flow_using_command hotfix finish' -s s -d 'Sign the hotfix tag cryptographically'
+complete -f -c git -n '__fish_git_flow_using_command hotfix finish' -s u -d 'Use the given GPG-key for the digital signature (implies -s)'
+complete -f -c git -n '__fish_git_flow_using_command hotfix finish' -s m -d 'Use the given tag message'
+complete -f -c git -n '__fish_git_flow_using_command hotfix finish' -s p -d 'Push to $ORIGIN after performing finish'
+complete -f -c git -n '__fish_git_flow_using_command hotfix finish' -a '(__fish_git_flow_branches hotfix)' -d 'Hotfix branch'
+
+
+
+## git-flow support
+
+complete -f -c git -n '__fish_git_flow_using_command' -a support -d 'Manage support branches'
+complete -f -c git -n '__fish_git_flow_using_command support' -a list -d 'List support branches'
+complete -f -c git -n '__fish_git_flow_using_command support' -s v -d 'Verbose output'
+
+complete -f -c git -n '__fish_git_flow_using_command support' -a start -d 'Start a new support branch'
+complete -f -c git -n '__fish_git_flow_using_command support start' -s F -d 'Fetch from origin first'
+