bash 4 check (for ac)

diff --git a/bash-prompt.sh b/bash-prompt.sh
index e17e65c02b2e26855a7d9eb41634c9e65ea64214..ac09c25fb286603709608a9538b49b8786fda3e5 100644 (file)
--- a/bash-prompt.sh
+++ b/bash-prompt.sh
@@ -1,6 +1,9 @@
 # NOTE:
 # This code works known to work for bash
 
+# the code below requires bash 4.x, skip if earlier
+test ${BASH_VERSION%%.*} -lt 4 && return
+
 # To use it, source this file and set $PROMPT_COMMAND env var:
 # PROMPT_COMMAND=__bash_prompt_command