Change the default behaviour of all scripts to NOT fetch.

This already was the default behaviour of git-flow-feature, but now it
is the default for the other scripts, too.

RATIONALE: Due to limitations on some platforms (and some
implementations of getopt), it's impossible to turn off the -f (fetch)
option.  Therefore, it must now be set explicitly.

Also, this makes git-flow work in stand-alone repositories (i.e. repos
that do not have an origin remote at all).

git-flow-hotfix

@@ -153,7 +153,7 @@ require_no_existing_hotfix_branches() {
 }
 
 cmd_start() {
-	DEFINE_boolean fetch true "fetch from $ORIGIN before performing finish" F
+	DEFINE_boolean fetch false "fetch from $ORIGIN before performing finish" F
 	parse_args "$@"
 	BASE=${2:-$MASTER_BRANCH}
 	require_version_arg
@@ -167,7 +167,9 @@ cmd_start() {
 	if flag fetch; then
 		git fetch -q "$ORIGIN" "$MASTER_BRANCH"
 	fi
-	require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
+	if has "$ORIGIN/$MASTER_BRANCH" "$(git_remote_branches)"; then
+		require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
+	fi
 
 	# create branch
 	git checkout -b "$BRANCH" "$BASE"
@@ -187,7 +189,7 @@ cmd_start() {
 }
 
 cmd_finish() {
-	DEFINE_boolean fetch true "fetch from $ORIGIN before performing finish" F
+	DEFINE_boolean fetch false "fetch from $ORIGIN before performing finish" F
 	DEFINE_boolean sign false "sign the release tag cryptographically" s
 	DEFINE_string signingkey "" "use the given GPG-key for the digital signature (implies -s)" u
 	DEFINE_string message "" "use the given tag message" m
@@ -209,8 +211,12 @@ cmd_finish() {
 		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH" || \
 		  die "Could not fetch $DEVELOP_BRANCH from $ORIGIN."
 	fi
-	require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
-	require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
+	if has "$ORIGIN/$MASTER_BRANCH" "$(git_remote_branches)"; then
+		require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
+	fi
+	if has "$ORIGIN/$DEVELOP_BRANCH" "$(git_remote_branches)"; then
+		require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
+	fi
 
 	# try to merge into master
 	# in case a previous attempt to finish this release branch has failed,

git-flow-release

@@ -148,7 +148,7 @@ require_no_existing_release_branches() {
 }
 
 cmd_start() {
-	DEFINE_boolean fetch true "fetch from $ORIGIN before performing finish" F
+	DEFINE_boolean fetch false "fetch from $ORIGIN before performing finish" F
 	parse_args "$@"
 	BASE=${2:-$DEVELOP_BRANCH}
 	require_version_arg
@@ -162,7 +162,9 @@ cmd_start() {
 	if flag fetch; then
 		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH"
 	fi
-	require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
+	if has "$ORIGIN/$DEVELOP_BRANCH" "$(git_remote_branches)"; then
+		require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
+	fi
 
 	# create branch
 	git checkout -b "$BRANCH" "$BASE"
@@ -182,7 +184,7 @@ cmd_start() {
 }
 
 cmd_finish() {
-	DEFINE_boolean fetch true "fetch from $ORIGIN before performing finish" F
+	DEFINE_boolean fetch false "fetch from $ORIGIN before performing finish" F
 	DEFINE_boolean sign false "sign the release tag cryptographically" s
 	DEFINE_string signingkey "" "use the given GPG-key for the digital signature (implies -s)" u
 	DEFINE_string message "" "use the given tag message" m
@@ -205,8 +207,12 @@ cmd_finish() {
 		git fetch -q "$ORIGIN" "$DEVELOP_BRANCH" || \
 		  die "Could not fetch $DEVELOP_BRANCH from $ORIGIN."
 	fi
-	require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
-	require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
+	if has "$ORIGIN/$MASTER_BRANCH" "$(git_remote_branches)"; then
+		require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
+	fi
+	if has "$ORIGIN/$DEVELOP_BRANCH" "$(git_remote_branches)"; then
+		require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
+	fi
 
 	# try to merge into master
 	# in case a previous attempt to finish this release branch has failed,

git-flow-support

@@ -156,7 +156,7 @@ require_base_is_on_master() {
 }
 
 cmd_start() {
-	DEFINE_boolean fetch true "fetch from $ORIGIN before performing finish" F
+	DEFINE_boolean fetch false "fetch from $ORIGIN before performing finish" F
 	parse_args "$@"
 	require_version_arg
 	require_base_arg