diff --git a/git-flow-feature b/git-flow-feature
index 3ee35ef..55198ad 100644
--- a/git-flow-feature
+++ b/git-flow-feature
@@ -204,7 +204,7 @@
 
 	# update the local repo with remote changes, if asked
 	if flag fetch; then
-		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
+		git_do fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
 	fi
 
 	# if the origin branch counterpart exists, assert that the local branch
@@ -214,7 +214,7 @@
 	fi
 
 	# create branch
-	if ! git checkout -b "$BRANCH" "$BASE"; then
+	if ! git_do checkout -b "$BRANCH" "$BASE"; then
 		die "Could not create feature branch '$BRANCH'"
 	fi
 
@@ -287,8 +287,8 @@
 	# update local repo with remote changes first, if asked
 	if has "$ORIGIN/$BRANCH" $(git_remote_branches); then
 		if flag fetch; then
-			git fetch -q "$ORIGIN" "$BRANCH"
-			git fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
+			git_do fetch -q "$ORIGIN" "$BRANCH"
+			git_do fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
 		fi
 	fi
 
@@ -311,16 +311,16 @@
 	fi
 
 	# merge into BASE
-	git checkout "$DEVELOP_BRANCH"
+	git_do checkout "$DEVELOP_BRANCH"
 	if [ "$(git rev-list -n2 "$DEVELOP_BRANCH..$BRANCH" | wc -l)" -eq 1 ]; then
-		git merge --ff "$BRANCH"
+		git_do merge --ff "$BRANCH"
 	else
 		if noflag squash; then
-		    git merge --no-ff "$BRANCH"
+		    git_do merge --no-ff "$BRANCH"
 		else
-			git merge --squash "$BRANCH"
-			git commit
-			git merge "$BRANCH"
+			git_do merge --squash "$BRANCH"
+			git_do commit
+			git_do merge "$BRANCH"
 		fi
 	fi
 
@@ -351,15 +351,15 @@
 
 	# delete branch
 	if flag fetch; then
-		git push "$ORIGIN" ":refs/heads/$BRANCH"
+		git_do push "$ORIGIN" ":refs/heads/$BRANCH"
 	fi
 	
 	
 	if noflag keep; then
 		if flag force_delete; then
-			git branch -D "$BRANCH"
+			git_do branch -D "$BRANCH"
 		else
-			git branch -d "$BRANCH"
+			git_do branch -d "$BRANCH"
 		fi
 	fi
 
@@ -383,17 +383,17 @@
 	# sanity checks
 	require_clean_working_tree
 	require_branch "$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do fetch -q "$ORIGIN"
 	require_branch_absent "$ORIGIN/$BRANCH"
 
 	# create remote branch
-	git push "$ORIGIN" "$BRANCH:refs/heads/$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do push "$ORIGIN" "$BRANCH:refs/heads/$BRANCH"
+	git_do fetch -q "$ORIGIN"
 
 	# configure remote tracking
-	git config "branch.$BRANCH.remote" "$ORIGIN"
-	git config "branch.$BRANCH.merge" "refs/heads/$BRANCH"
-	git checkout "$BRANCH"
+	git_do config "branch.$BRANCH.remote" "$ORIGIN"
+	git_do config "branch.$BRANCH.merge" "refs/heads/$BRANCH"
+	git_do checkout "$BRANCH"
 
 	echo
 	echo "Summary of actions:"
@@ -410,11 +410,11 @@
 	# sanity checks
 	require_clean_working_tree
 	require_branch_absent "$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do fetch -q "$ORIGIN"
 	require_branch "$ORIGIN/$BRANCH"
 
 	# create tracking branch
-	git checkout -b "$BRANCH" "$ORIGIN/$BRANCH"
+	git_do checkout -b "$BRANCH" "$ORIGIN/$BRANCH"
 
 	echo
 	echo "Summary of actions:"
@@ -445,7 +445,7 @@
 
 	if [ "$NAME" != "" ]; then
 		expand_nameprefix_arg
-		git checkout "$BRANCH"
+		git_do checkout "$BRANCH"
 	else
 		die "Name a feature branch explicitly."
 	fi
@@ -464,12 +464,12 @@
 	require_clean_working_tree
 	require_branch "$BRANCH"
 
-	git checkout -q "$BRANCH"
+	git_do checkout -q "$BRANCH"
 	local OPTS=
 	if flag interactive; then
 		OPTS="$OPTS -i"
 	fi
-	git rebase $OPTS "$DEVELOP_BRANCH"
+	git_do rebase $OPTS "$DEVELOP_BRANCH"
 }
 
 avoid_accidental_cross_branch_action() {
@@ -511,20 +511,20 @@
 		# we already have a local branch called like this, so simply pull the
 		# remote changes in
 		if flag rebase; then
-			if ! git pull --rebase -q "$REMOTE" "$BRANCH"; then
+			if ! git_do pull --rebase -q "$REMOTE" "$BRANCH"; then
 				warn "Pull was aborted. There might be conflicts during rebase or '$REMOTE' might be inaccessible."
 				exit 1
 			fi
 		else
-			git pull -q "$REMOTE" "$BRANCH" || die "Failed to pull from remote '$REMOTE'."
+			git_do pull -q "$REMOTE" "$BRANCH" || die "Failed to pull from remote '$REMOTE'."
 		fi
 
 		echo "Pulled $REMOTE's changes into $BRANCH."
 	else
 		# setup the local branch clone for the first time
-		git fetch -q "$REMOTE" "$BRANCH" || die "Fetch failed."     # stores in FETCH_HEAD
-		git branch --no-track "$BRANCH" FETCH_HEAD || die "Branch failed."
-		git checkout -q "$BRANCH" || die "Checking out new local branch failed."
+		git_do fetch -q "$REMOTE" "$BRANCH" || die "Fetch failed."     # stores in FETCH_HEAD
+		git_do branch --no-track "$BRANCH" FETCH_HEAD || die "Branch failed."
+		git_do checkout -q "$BRANCH" || die "Checking out new local branch failed."
 		echo "Created local branch $BRANCH based on $REMOTE's $BRANCH."
 	fi
 }
diff --git a/git-flow-hotfix b/git-flow-hotfix
index a3bcfd1..ba485f6 100644
--- a/git-flow-hotfix
+++ b/git-flow-hotfix
@@ -169,14 +169,14 @@
 	require_branch_absent "$BRANCH"
 	require_tag_absent "$VERSION_PREFIX$VERSION"
 	if flag fetch; then
-		git fetch -q "$ORIGIN" "$MASTER_BRANCH"
+		git_do fetch -q "$ORIGIN" "$MASTER_BRANCH"
 	fi
 	if has "$ORIGIN/$MASTER_BRANCH" $(git_remote_branches); then
 		require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
 	fi
 
 	# create branch
-	git checkout -b "$BRANCH" "$BASE"
+	git_do checkout -b "$BRANCH" "$BASE"
 
 	echo
 	echo "Summary of actions:"
@@ -199,17 +199,17 @@
 	# sanity checks
 	require_clean_working_tree
 	require_branch "$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do fetch -q "$ORIGIN"
 	require_branch_absent "$ORIGIN/$BRANCH"
 
 	# create remote branch
-	git push "$ORIGIN" "$BRANCH:refs/heads/$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do push "$ORIGIN" "$BRANCH:refs/heads/$BRANCH"
+	git_do fetch -q "$ORIGIN"
 
 	# configure remote tracking
 	git config "branch.$BRANCH.remote" "$ORIGIN"
 	git config "branch.$BRANCH.merge" "refs/heads/$BRANCH"
-	git checkout "$BRANCH"
+	git_do checkout "$BRANCH"
 
 	echo
 	echo "Summary of actions:"
@@ -226,11 +226,11 @@
 	# sanity checks
 	require_clean_working_tree
 	require_branch_absent "$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do fetch -q "$ORIGIN"
 	require_branch "$ORIGIN/$BRANCH"
 
 	# create tracking branch
-	git checkout -b "$BRANCH" "$ORIGIN/$BRANCH"
+	git_do checkout -b "$BRANCH" "$ORIGIN/$BRANCH"
 
 	echo
 	echo "Summary of actions:"
@@ -260,9 +260,9 @@
 	require_branch "$BRANCH"
 	require_clean_working_tree
 	if flag fetch; then
-		git fetch -q "$ORIGIN" "$MASTER_BRANCH" || \
+		git_do fetch -q "$ORIGIN" "$MASTER_BRANCH" || \
 		  die "Could not fetch $MASTER_BRANCH from $ORIGIN."
-		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH" || \
+		git_do fetch -q "$ORIGIN" "$DEVELOP_BRANCH" || \
 		  die "Could not fetch $DEVELOP_BRANCH from $ORIGIN."
 	fi
 	if has "$ORIGIN/$MASTER_BRANCH" $(git_remote_branches); then
@@ -276,9 +276,9 @@
 	# in case a previous attempt to finish this release branch has failed,
 	# but the merge into master was successful, we skip it now
 	if ! git_is_branch_merged_into "$BRANCH" "$MASTER_BRANCH"; then
-		git checkout "$MASTER_BRANCH" || \
+		git_do checkout "$MASTER_BRANCH" || \
 		  die "Could not check out $MASTER_BRANCH."
-		git merge --no-ff "$BRANCH" || \
+		git_do merge --no-ff "$BRANCH" || \
 		  die "There were merge conflicts."
 		  # TODO: What do we do now?
 	fi
@@ -294,7 +294,7 @@
 			[ "$FLAGS_signingkey" != "" ] && opts="$opts -u '$FLAGS_signingkey'"
 			[ "$FLAGS_message" != "" ] && opts="$opts -m '$FLAGS_message'"
 			[ "$FLAGS_messagefile" != "" ] && opts="$opts -F '$FLAGS_messagefile'"
-			eval git tag $opts "$VERSION_PREFIX$VERSION" "$BRANCH" || \
+			eval git_do tag $opts "$VERSION_PREFIX$VERSION" "$BRANCH" || \
 			die "Tagging failed. Please run finish again to retry."
 		fi
 	fi
@@ -303,28 +303,28 @@
 	# in case a previous attempt to finish this release branch has failed,
 	# but the merge into develop was successful, we skip it now
 	if ! git_is_branch_merged_into "$BRANCH" "$DEVELOP_BRANCH"; then
-		git checkout "$DEVELOP_BRANCH" || \
+		git_do checkout "$DEVELOP_BRANCH" || \
 		  die "Could not check out $DEVELOP_BRANCH."
 
 		# TODO: Actually, accounting for 'git describe' pays, so we should
 		# ideally git merge --no-ff $tagname here, instead!
-		git merge --no-ff "$BRANCH" || \
+		git_do merge --no-ff "$BRANCH" || \
 		  die "There were merge conflicts."
 		  # TODO: What do we do now?
 	fi
 
 	# delete branch
 	if noflag keep; then
-		git branch -d "$BRANCH"
+		git_do branch -d "$BRANCH"
 	fi
 
 	if flag push; then
-		git push "$ORIGIN" "$DEVELOP_BRANCH" || \
+		git_do push "$ORIGIN" "$DEVELOP_BRANCH" || \
 			die "Could not push to $DEVELOP_BRANCH from $ORIGIN."
-		git push "$ORIGIN" "$MASTER_BRANCH" || \
+		git_do push "$ORIGIN" "$MASTER_BRANCH" || \
 			die "Could not push to $MASTER_BRANCH from $ORIGIN."
 		if noflag notag; then
-			git push --tags "$ORIGIN" || \
+			git_do push --tags "$ORIGIN" || \
 				die "Could not push tags to $ORIGIN."
 		fi
 	fi
diff --git a/git-flow-init b/git-flow-init
index 00646fe..5b4e7e8 100644
--- a/git-flow-init
+++ b/git-flow-init
@@ -53,7 +53,7 @@
 	parse_args "$@"
 	
 	if ! git rev-parse --git-dir >/dev/null 2>&1; then
-		git init
+		git_do init
 	else
 		# assure that we are not working in a repo with local changes
 		git_repo_is_headless || require_clean_working_tree
@@ -121,14 +121,14 @@
 			# name exists, checkout that branch and use it for master
 			if ! git_local_branch_exists "$master_branch" && \
 				git_remote_branch_exists "origin/$master_branch"; then
-				git branch "$master_branch" "origin/$master_branch" >/dev/null 2>&1
+				git_do branch "$master_branch" "origin/$master_branch" >/dev/null 2>&1
 			elif ! git_local_branch_exists "$master_branch"; then
 				die "Local branch '$master_branch' does not exist."
 			fi
 		fi
 
 		# store the name of the master branch
-		git config gitflow.branch.master "$master_branch"
+		git_do config gitflow.branch.master "$master_branch"
 	fi
 
 	# add a develop branch if no such branch exists yet
@@ -185,7 +185,7 @@
 		fi
 
 		# store the name of the develop branch
-		git config gitflow.branch.develop "$develop_branch"
+		git_do config gitflow.branch.develop "$develop_branch"
 	fi
 
 	# Creation of HEAD
@@ -194,8 +194,8 @@
 	# it to be able to create new branches.
 	local created_gitflow_branch=0
 	if ! git rev-parse --quiet --verify HEAD >/dev/null 2>&1; then
-		git symbolic-ref HEAD "refs/heads/$master_branch"
-		git commit --allow-empty --quiet -m "Initial commit"
+		git_do symbolic-ref HEAD "refs/heads/$master_branch"
+		git_do commit --allow-empty --quiet -m "Initial commit"
 		created_gitflow_branch=1
 	fi
 
@@ -213,9 +213,9 @@
 	# the develop branch now in that case (we base it on master, of course)
 	if ! git_local_branch_exists "$develop_branch"; then
 		if git_remote_branch_exists "origin/$develop_branch"; then
-			git branch "$develop_branch" "origin/$develop_branch" >/dev/null 2>&1
+			git_do branch "$develop_branch" "origin/$develop_branch" >/dev/null 2>&1
 		else
-			git branch --no-track "$develop_branch" "$master_branch"
+			git_do branch --no-track "$develop_branch" "$master_branch"
 		fi
 		created_gitflow_branch=1
 	fi
@@ -225,7 +225,7 @@
 
 	# switch to develop branch if its newly created
 	if [ $created_gitflow_branch -eq 1 ]; then
-		git checkout -q "$develop_branch"
+		git_do checkout -q "$develop_branch"
 	fi
 
 	# finally, ask the user for naming conventions (branch and tag prefixes)
@@ -251,7 +251,7 @@
 			printf "\n"
 		fi
 		[ "$answer" = "-" ] && prefix= || prefix=${answer:-$default_suggestion}
-		git config gitflow.prefix.feature "$prefix"
+		git_do config gitflow.prefix.feature "$prefix"
 	fi
 
 	# Release branches
@@ -264,7 +264,7 @@
 			printf "\n"
 		fi
 		[ "$answer" = "-" ] && prefix= || prefix=${answer:-$default_suggestion}
-		git config gitflow.prefix.release "$prefix"
+		git_do config gitflow.prefix.release "$prefix"
 	fi
 
 
@@ -278,7 +278,7 @@
 			printf "\n"
 		fi
 		[ "$answer" = "-" ] && prefix= || prefix=${answer:-$default_suggestion}
-		git config gitflow.prefix.hotfix "$prefix"
+		git_do config gitflow.prefix.hotfix "$prefix"
 	fi
 
 
@@ -292,7 +292,7 @@
 			printf "\n"
 		fi
 		[ "$answer" = "-" ] && prefix= || prefix=${answer:-$default_suggestion}
-		git config gitflow.prefix.support "$prefix"
+		git_do config gitflow.prefix.support "$prefix"
 	fi
 
 
@@ -306,7 +306,7 @@
 			printf "\n"
 		fi
 		[ "$answer" = "-" ] && prefix= || prefix=${answer:-$default_suggestion}
-		git config gitflow.prefix.versiontag "$prefix"
+		git_do config gitflow.prefix.versiontag "$prefix"
 	fi
 
 
diff --git a/git-flow-release b/git-flow-release
index 2d81ed6..cb95bd4 100644
--- a/git-flow-release
+++ b/git-flow-release
@@ -136,7 +136,7 @@
 }
 
 require_base_is_on_develop() {
-	if ! git branch --no-color --contains "$BASE" 2>/dev/null \
+	if ! git_do branch --no-color --contains "$BASE" 2>/dev/null \
 			| sed 's/[* ] //g' \
 	  		| grep -q "^$DEVELOP_BRANCH\$"; then
 		die "fatal: Given base '$BASE' is not a valid commit on '$DEVELOP_BRANCH'."
@@ -164,14 +164,14 @@
 	require_branch_absent "$BRANCH"
 	require_tag_absent "$VERSION_PREFIX$VERSION"
 	if flag fetch; then
-		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
+		git_do fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
 	fi
 	if has "$ORIGIN/$DEVELOP_BRANCH" $(git_remote_branches); then
 		require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
 	fi
 
 	# create branch
-	git checkout -b "$BRANCH" "$BASE"
+	git_do checkout -b "$BRANCH" "$BASE"
 
 	echo
 	echo "Summary of actions:"
@@ -210,9 +210,9 @@
 	require_branch "$BRANCH"
 	require_clean_working_tree
 	if flag fetch; then
-		git fetch -q "$ORIGIN" "$MASTER_BRANCH" || \
+		git_do fetch -q "$ORIGIN" "$MASTER_BRANCH" || \
 		  die "Could not fetch $MASTER_BRANCH from $ORIGIN."
-		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH" || \
+		git_do fetch -q "$ORIGIN" "$DEVELOP_BRANCH" || \
 		  die "Could not fetch $DEVELOP_BRANCH from $ORIGIN."
 	fi
 	if has "$ORIGIN/$MASTER_BRANCH" $(git_remote_branches); then
@@ -226,16 +226,16 @@
 	# in case a previous attempt to finish this release branch has failed,
 	# but the merge into master was successful, we skip it now
 	if ! git_is_branch_merged_into "$BRANCH" "$MASTER_BRANCH"; then
-		git checkout "$MASTER_BRANCH" || \
+		git_do checkout "$MASTER_BRANCH" || \
 		  die "Could not check out $MASTER_BRANCH."
 		if noflag squash; then
-			git merge --no-ff "$BRANCH" || \
+			git_do merge --no-ff "$BRANCH" || \
 				die "There were merge conflicts."
 				# TODO: What do we do now?
 		else
-			git merge --squash "$BRANCH" || \
+			git_do merge --squash "$BRANCH" || \
 				die "There were merge conflicts."
-			git commit
+			git_do commit
 		fi
 	fi
 
@@ -250,7 +250,7 @@
 			[ "$FLAGS_signingkey" != "" ] && opts="$opts -u '$FLAGS_signingkey'"
 			[ "$FLAGS_message" != "" ] && opts="$opts -m '$FLAGS_message'"
 			[ "$FLAGS_messagefile" != "" ] && opts="$opts -F '$FLAGS_messagefile'"
-			eval git tag $opts "$tagname" "$BRANCH" || \
+			eval git_do tag $opts "$tagname" "$BRANCH" || \
 			die "Tagging failed. Please run finish again to retry."
 		fi
 	fi
@@ -259,41 +259,41 @@
 	# in case a previous attempt to finish this release branch has failed,
 	# but the merge into develop was successful, we skip it now
 	if ! git_is_branch_merged_into "$BRANCH" "$DEVELOP_BRANCH"; then
-		git checkout "$DEVELOP_BRANCH" || \
+		git_do checkout "$DEVELOP_BRANCH" || \
 		  die "Could not check out $DEVELOP_BRANCH."
 
 		# TODO: Actually, accounting for 'git describe' pays, so we should
 		# ideally git merge --no-ff $tagname here, instead!
 		if noflag squash; then
-			git merge --no-ff "$BRANCH" || \
+			git_do merge --no-ff "$BRANCH" || \
 				die "There were merge conflicts."
 				# TODO: What do we do now?
 		else
-			git merge --squash "$BRANCH" || \
+			git_do merge --squash "$BRANCH" || \
 				die "There were merge conflicts."
 				# TODO: What do we do now?
-			git commit
+			git_do commit
 		fi
 	fi
 
 	# delete branch
 	if noflag keep; then
 		if [ "$BRANCH" = "$(git_current_branch)" ]; then
-			git checkout "$MASTER_BRANCH"
+			git_do checkout "$MASTER_BRANCH"
 		fi
-		git branch -d "$BRANCH"
+		git_do branch -d "$BRANCH"
 	fi
 
 	if flag push; then
-		git push "$ORIGIN" "$DEVELOP_BRANCH" || \
+		git_do push "$ORIGIN" "$DEVELOP_BRANCH" || \
 			die "Could not push to $DEVELOP_BRANCH from $ORIGIN."
-		git push "$ORIGIN" "$MASTER_BRANCH" || \
+		git_do push "$ORIGIN" "$MASTER_BRANCH" || \
 			die "Could not push to $MASTER_BRANCH from $ORIGIN."
 		if noflag notag; then
-			git push --tags "$ORIGIN" || \
+			git_do push --tags "$ORIGIN" || \
 			  die "Could not push tags to $ORIGIN."
 		fi
-		git push "$ORIGIN" :"$BRANCH" || \
+		git_do push "$ORIGIN" :"$BRANCH" || \
 			die "Could not delete the remote $BRANCH in $ORIGIN."
 	fi
 
@@ -324,17 +324,17 @@
 	# sanity checks
 	require_clean_working_tree
 	require_branch "$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do fetch -q "$ORIGIN"
 	require_branch_absent "$ORIGIN/$BRANCH"
 
 	# create remote branch
-	git push "$ORIGIN" "$BRANCH:refs/heads/$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do push "$ORIGIN" "$BRANCH:refs/heads/$BRANCH"
+	git_do fetch -q "$ORIGIN"
 
 	# configure remote tracking
-	git config "branch.$BRANCH.remote" "$ORIGIN"
-	git config "branch.$BRANCH.merge" "refs/heads/$BRANCH"
-	git checkout "$BRANCH"
+	git_do config "branch.$BRANCH.remote" "$ORIGIN"
+	git_do config "branch.$BRANCH.merge" "refs/heads/$BRANCH"
+	git_do checkout "$BRANCH"
 
 	echo
 	echo "Summary of actions:"
@@ -351,11 +351,11 @@
 	# sanity checks
 	require_clean_working_tree
 	require_branch_absent "$BRANCH"
-	git fetch -q "$ORIGIN"
+	git_do fetch -q "$ORIGIN"
 	require_branch "$ORIGIN/$BRANCH"
 
 	# create tracking branch
-	git checkout -b "$BRANCH" "$ORIGIN/$BRANCH"
+	git_do checkout -b "$BRANCH" "$ORIGIN/$BRANCH"
 
 	echo
 	echo "Summary of actions:"
diff --git a/git-flow-support b/git-flow-support
index ba4d92f..cdbfc71 100644
--- a/git-flow-support
+++ b/git-flow-support
@@ -169,12 +169,12 @@
 
 	# fetch remote changes
 	if flag fetch; then
-		git fetch -q "$ORIGIN" "$BASE"
+		git_do fetch -q "$ORIGIN" "$BASE"
 	fi
 	require_branch_absent "$BRANCH"
 
 	# create branch
-	git checkout -b "$BRANCH" "$BASE"
+	git_do checkout -b "$BRANCH" "$BASE"
 
 	echo
 	echo "Summary of actions:"