Fix to e78e308e, IPv6 got split at :

Also got rid of awk (yuck!) to parse port (commit: b4fbb418)

Tested with dash to avoid bashisms:

$ dash -vx './wsrep_sst_common.sh' --address '128.0.0.5:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2' 2>&1  | more
+ readonly WSREP_SST_OPT_ADDR=128.0.0.5:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_HOST=128.0.0.5
+ readonly WSREP_SST_OPT_HOST_UNESCAPED=128.0.0.5
+ remain=3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_PORT=3333
+ remain=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_MODULE=module
+ readonly WSREP_SST_OPT_PATH=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ remain=lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_LSN=lsn_version
+ remain=sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_SST_VER=sst_ver

$ dash -vx './wsrep_sst_common.sh' --address '[2001:db8::1]:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2' 2>&1  | more
+ readonly WSREP_SST_OPT_ADDR=[2001:db8::1]:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ addr_no_bracket=2001:db8::1]:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_HOST_UNESCAPED=2001:db8::1
+ readonly WSREP_SST_OPT_HOST=[2001:db8::1]
+ remain=:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ remain=3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_PORT=3333
+ remain=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_MODULE=module
+ readonly WSREP_SST_OPT_PATH=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ remain=lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_LSN=lsn_version
+ remain=sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_SST_VER=sst_ver

And bash as well:

$ bash -vx './wsrep_sst_common.sh' --address '127.0.0.3:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2' 2>&1 | more
+ readonly WSREP_SST_OPT_ADDR=127.0.0.3:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ WSREP_SST_OPT_ADDR=127.0.0.3:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ case "${WSREP_SST_OPT_ADDR}" in
+ readonly WSREP_SST_OPT_HOST=127.0.0.3
+ WSREP_SST_OPT_HOST=127.0.0.3
+ readonly WSREP_SST_OPT_HOST_UNESCAPED=127.0.0.3
+ WSREP_SST_OPT_HOST_UNESCAPED=127.0.0.3
+ remain=3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_PORT=3333
+ WSREP_SST_OPT_PORT=3333
+ remain=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_MODULE=module
+ WSREP_SST_OPT_MODULE=module
+ readonly WSREP_SST_OPT_PATH=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ WSREP_SST_OPT_PATH=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ remain=lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_LSN=lsn_version
+ WSREP_SST_OPT_LSN=lsn_version
+ remain=sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_SST_VER=sst_ver
+ WSREP_SST_OPT_SST_VER=sst_ver

$ bash -vx './wsrep_sst_common.sh' --address '[2001:db8::1]:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2' 2>&1 | more
+ readonly 'WSREP_SST_OPT_ADDR=[2001:db8::1]:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2'
+ WSREP_SST_OPT_ADDR='[2001:db8::1]:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2'
+ case "${WSREP_SST_OPT_ADDR}" in
+ addr_no_bracket='2001:db8::1]:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2'
+ readonly WSREP_SST_OPT_HOST_UNESCAPED=2001:db8::1
+ WSREP_SST_OPT_HOST_UNESCAPED=2001:db8::1
+ readonly 'WSREP_SST_OPT_HOST=[2001:db8::1]'
+ WSREP_SST_OPT_HOST='[2001:db8::1]'
+ remain=:3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ remain=3333/module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_PORT=3333
+ WSREP_SST_OPT_PORT=3333
+ remain=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_MODULE=module
+ WSREP_SST_OPT_MODULE=module
+ readonly WSREP_SST_OPT_PATH=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ WSREP_SST_OPT_PATH=module/lsn_version/sst_ver/some_future_option1/some_future_option2
+ remain=lsn_version/sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_LSN=lsn_version
+ WSREP_SST_OPT_LSN=lsn_version
+ remain=sst_ver/some_future_option1/some_future_option2
+ readonly WSREP_SST_OPT_SST_VER=sst_ver
+ WSREP_SST_OPT_SST_VER=sst_ver