Bundle and unbundle local Git repos

Makefile

###
#
# This Makefile helps to bundle and unbundle local Git repos. Directories
# containing bare repos should end with `.git` (e.g. `mybarerepo.git`).
#
###

DIRS = $(shell find . -type d -maxdepth 1)
BUNDLES = $(filter-out $(wildcard *.git.bundle), $(wildcard *.bundle))
BUNDLES_BARE = $(wildcard *.git.bundle)

.PHONY: all export import

all:
	@echo "Usage: make [export|import]"

bundle: export
export:
	@$(foreach DIR, $(DIRS), \
		echo "### Bundling $(DIR):"; \
		git -C $(DIR) bundle create ../$(DIR).bundle --all; \
		echo; \
	)

unbundle: import
import:
	@$(foreach B, $(BUNDLES), \
		echo "### Unbundling $(B):"; \
		test -e $(B:.bundle=) && \
			echo "Repo already exists" || \
			( \
				git clone $(B) && \
				cd $(B:.bundle=) && \
				for i in $$(git branch -r | egrep -v "(HEAD|master)"); do \
					git branch --track $${i#*/} $i; \
				done \
			); \
		echo; \
	)
	@$(foreach B, $(BUNDLES_BARE), \
		echo "### Unbundling $(B):"; \
		test -e $(B:.bundle=) && \
			echo "Repo already exists" || \
			git clone --bare $(B) $(B:.bundle=); \
		echo; \
	)