refactor: remove redundant colons

In the absence of a colon, the default value (which is empty) will be
used only if TESSEN_BACKEND is unset. Adding a colon ensures that the
default value is also used if TESSEN_BACKEND is empty. Since the default
value is empty, the colon is redundant.

1 files changed, 2 insertions, 2 deletions

diff --git a/tessen b/tessen
index 8f38f2e..f11d449 100755
--- a/tessen
+++ b/tessen
@@ -18,9 +18,9 @@ readonly tsn_cliptime="${PASSWORD_STORE_CLIP_TIME:-15}"
 readonly tsn_delay="${TESSEN_DELAY:-200}"
 readonly tsn_known_backends=(bemenu rofi wofi)
 # variables which hold data for possible actions and choices
-tsn_backend="${TESSEN_BACKEND:-}"
+tsn_backend="${TESSEN_BACKEND-}"
 tsn_backend_opts=()
-tsn_action="${TESSEN_ACTION:-}"
+tsn_action="${TESSEN_ACTION-}"
 tsn_userkey="${TESSEN_USERKEY:-user}"
 tsn_urlkey="${TESSEN_URLKEY:-url}"
 tsn_autokey="${TESSEN_AUTOKEY:-autotype}"