core: Fix version check

Previously it would report that Bash 4.0 and 4.1 were unsupported.

Since Bash always sets `BASH_VERSION`, it's not practical to write an
automated test unless different versions of the Bash binary are
available. I may add one, but since I've tested it manually on my
machine and this condition isn't likely to ever change, it's probably
not worth it.

Author: mbland

go-core.bash

@@ -26,7 +26,8 @@
 #           https://mike-bland.com/
 #           https://github.com/mbland
 
-if [[ "${BASH_VERSINFO[0]}" -lt '3' || "${BASH_VERSINFO[1]}" -lt '2' ]]; then
+if [[ "${BASH_VERSINFO[0]}" -lt '3' ||
+    ( "${BASH_VERSINFO[0]}" -eq '3' && "${BASH_VERSINFO[1]}" -lt '2' ) ]]; then
   printf "This module requires bash version 3.2 or greater:\n  %s %s\n" \
     "$BASH" "$BASH_VERSION"
   exit 1