prezto/modules/git/functions/git-branch-current

#
# Displays the current Git branch.
#
# Authors:
#   Sorin Ionescu <sorin.ionescu@gmail.com>
#

# function git-branch-current {

if ! git rev-parse 2> /dev/null; then
  print "$0: not a repository: $PWD" >&2
  return 1
fi

local ref="$(git symbolic-ref HEAD 2> /dev/null)"

if [[ -n "$ref" ]]; then
  print "${ref#refs/heads/}"
  return 0
else
  return 1
fi

# }