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prezto/modules/git/functions/git-squash

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#
# Performs a "dirty" squash
#
# Authors:
# Daniel Carrillo <daniel.carrillo@gmail.com>
#
# function git-squash {
if ! is-true "$(command git rev-parse --is-inside-work-tree 2> /dev/null)"; then
print "$0: not a repository work tree: $PWD" >&2
return 1
elif [ -z "$2" ]; then
print "Usage: $0 <base branch> \"commit message\"" >&2
return 1
fi
local bbranch=$1
local message=$2
local cbranch=$(git branch --show-current)
git reset $(git merge-base $bbranch $cbranch)
git add -A
git commit -m "$message"
# }