[PATCH v2 02/10] test: set EMACS_SERVER variable only after dtach(1) was successfully started

[Dmitry Kurochkin <dmitry.kurochkin@gmail.com>]

Otherwise, we can set the EMACS_SERVER and return with an error.  And
subsequent calls to test_emacs would assume that emacs server is running.
---
 test/test-lib.sh |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/test/test-lib.sh b/test/test-lib.sh
index 222b5e4..ff85848 100755
--- a/test/test-lib.sh
+++ b/test/test-lib.sh
@@ -823,50 +823,51 @@ export NOTMUCH_CONFIG=$NOTMUCH_CONFIG
 # Here's what we are using here:
 #
 # --no-init-file	Don't load users ~/.emacs
 #
 # --no-site-file	Don't load the site-wide startup stuff
 #
 # --directory		Ensure that the local elisp sources are found
 #
 # --load		Force loading of notmuch.el and test-lib.el
 
 exec emacs --no-init-file --no-site-file \
 	--directory "$TEST_DIRECTORY/../emacs" --load notmuch.el \
 	--directory "$TEST_DIRECTORY" --load test-lib.el \
 	"\$@"
 EOF
 	chmod a+x "$TMP_DIRECTORY/run_emacs"
 }
 
 test_emacs () {
 	if [ -z "$EMACS_SERVER" ]; then
-		EMACS_SERVER="notmuch-test-suite-$$"
+		server_name="notmuch-test-suite-$$"
 		# start a detached session with an emacs server
 		# user's TERM is given to dtach which assumes a minimally
 		# VT100-compatible terminal -- and emacs inherits that
 		TERM=$ORIGINAL_TERM dtach -n "$TMP_DIRECTORY/emacs-dtach-socket.$$" \
 			sh -c "stty rows 24 cols 80; exec '$TMP_DIRECTORY/run_emacs' \
 				--no-window-system \
-				--eval '(setq server-name \"$EMACS_SERVER\")' \
+				--eval '(setq server-name \"$server_name\")' \
 				--eval '(server-start)' \
 				--eval '(orphan-watchdog $$)'" || return
+		EMACS_SERVER="$server_name"
 		# wait until the emacs server is up
 		until test_emacs '()' 2>/dev/null; do
 			sleep 1
 		done
 	fi
 
 	emacsclient --socket-name="$EMACS_SERVER" --eval "(progn $@)"
 }
 
 test_reset_state_ () {
 	test_subtest_known_broken_=
 }
 
 
 find_notmuch_path ()
 {
     dir="$1"
 
     while [ -n "$dir" ]; do
 	bin="$dir/notmuch"
-- 
1.7.7.2