Rewrite the way git-flow initialized its variables in git-flow and assumed

existence of a valid git repo. Instead, functions gitflow_load_settings()
and gitflow_require_git_repo() have been added that can be called in each
submodule that requires such.

Specifically, git-flow init does NOT use this.

git-flow

@@ -19,11 +19,6 @@ if [ "$DEBUG" = "yes" ]; then
 fi
 
 export GITFLOW_DIR=$(dirname "$0")
-export GIT_DIR=$(git rev-parse --git-dir)
-export MASTER_BRANCH=$(git config --get gitflow.branch.master || echo master)
-export DEVELOP_BRANCH=$(git config --get gitflow.branch.develop || echo develop)
-export ORIGIN=$(git config --get gitflow.origin || echo origin)
-export README=$(git config --get gitflow.readme || echo README)
 
 usage() {
 	echo "usage: git flow <subcommand>"
@@ -62,10 +57,6 @@ main() {
 		exit 1
 	fi
 
-	if ! git rev-parse --git-dir >/dev/null; then
-		die "Not a git repository"
-	fi
-
 	# run command
 	. "$GITFLOW_DIR/git-flow-$SUBCOMMAND"
 	FLAGS_PARENT="git flow $SUBCOMMAND"

git-flow-feature

@@ -12,6 +12,8 @@
 # Copyright (c) 2010 by Benedikt Böhm
 #
 
+gitflow_require_git_repo
+gitflow_load_settings
 PREFIX=$(git config --get gitflow.prefix.feature || echo feature/)
 
 usage() {

git-flow-hotfix

@@ -12,6 +12,8 @@
 # Copyright (c) 2010 by Benedikt Böhm
 #
 
+gitflow_require_git_repo
+gitflow_load_settings
 VERSION_PREFIX=$(git config --get gitflow.prefix.versiontag)
 PREFIX=$(git config --get gitflow.prefix.hotfix || echo hotfix/)
 

git-flow-release

@@ -12,6 +12,8 @@
 # Copyright (c) 2010 by Benedikt Böhm
 #
 
+gitflow_require_git_repo
+gitflow_load_settings
 VERSION_PREFIX=$(git config --get gitflow.prefix.versiontag)
 PREFIX=$(git config --get gitflow.prefix.release || echo release/)
 

git-flow-support

@@ -12,6 +12,8 @@
 # Copyright (c) 2010 by Benedikt Böhm
 #
 
+gitflow_require_git_repo
+gitflow_load_settings
 VERSION_PREFIX=$(git config --get gitflow.prefix.versiontag)
 PREFIX=$(git config --get gitflow.prefix.support || echo support/)
 

gitflow-common

@@ -44,6 +44,15 @@ gitflow_remote_branches() { git branch -r | sed 's/^[* ] //'; }
 gitflow_all_branches() { gitflow_local_branches; gitflow_remote_branches; }
 gitflow_all_tags() { git tag; }
 
+# loading settings that can be overridden using git config
+gitflow_load_settings() {
+	export GIT_DIR=$(git rev-parse --git-dir >/dev/null 2>&1)
+	export MASTER_BRANCH=$(git config --get gitflow.branch.master || echo master)
+	export DEVELOP_BRANCH=$(git config --get gitflow.branch.develop || echo develop)
+	export ORIGIN=$(git config --get gitflow.origin || echo origin)
+	export README=$(git config --get gitflow.readme || echo README)
+}
+
 #
 # resolve_nameprefix
 #
@@ -107,6 +116,12 @@ gitflow_test_clean_working_tree() {
 	fi
 }
 
+gitflow_require_git_repo() {
+	if ! git rev-parse --git-dir >/dev/null 2>&1; then
+		die "Not a git repository"
+	fi
+}
+
 gitflow_require_clean_working_tree() {
 	gitflow_test_clean_working_tree
 	local result=$?