parse_config fails when metric alias has a dash and a configuration is provided

[grimeyCH]

Quick reproduction:

• Change the standard network-io metric to:

[metric network_io:test-network]  
;Network traffic in kB/s.  
NETWORK_IO_INTERFACE=eth0

• run metrics.sh in verbose mode and it will output something like

$ ./metrics.sh -c metrics.ini -v
Started in verbose mode
OS detected: linux
Available metrics: cpu disk_io disk_usage heartbeat memory network_io ping swap
Available reporters: file influxdb keen_io logentries_com prometheus stathat statsd stdout udp
Loading configuration file: metrics.ini
./metrics.sh: 1: eval: Syntax error: Bad function name

minimal example config file i used for the above run is attached.
metrics.txt

In my humble opinion it fails in config.sh here:
eval "${fn_name}_config () { $_body; }"
But couldn't figure out why

[pstadler]

Functions can’t contain dashes. Need to implement something around get_alias I suppose.