Dash-separated option referenced in ARG_TYPE_GROUP_SET generates invalid variable in bash

[pbabinca]

Following minimal reproducer:

$ cat invalid_group_var.m4                            
#!/bin/bash

# m4_ignore(
echo "This is just a script template, not the script (yet) - pass it to 'argbash' to fix this." >&2
exit 11  #)Created by argbash-init v2.4.1a
# ARG_HELP([<The general help message of my script>])
# ARG_OPTIONAL_REPEATED([long-option])
# ARG_TYPE_GROUP_SET([MYGROUP], [GROUP-TYPE], [long-option], [ foo,bar ])
# ARGBASH_GO

# [ <-- needed because of Argbash

echo "Value of --foo: ${_arg_long_option[@]}"

# ] <-- needed because of Argbash
$ argbash -o invalid_group_var.sh invalid_group_var.m4

Ran with bash:

$ bash invalid_group_var.sh --long-option foo --long-option bar
invalid_group_var.sh: line 88: _arg_long_option__long-option_SUFFIX=foo: command not found
Value of --foo: foo bar

produces error ^.

Relevant line is 78:

$ nl invalid_group_var.sh | tail -n 10
    77	_arg_long_option="$(MYGROUP "$_arg_long_option" "long-option")" || exit 1
    78	_arg_long_option__long-option_SUFFIX="$(MYGROUP "$_arg_long_option" "long-option" idx)"
       
    79	### END OF CODE GENERATED BY Argbash (sortof) ### ])
    80	# [ <-- needed because of Argbash
       
       
    81	echo "Value of --foo: ${_arg_long_option[@]}"
       
    82	# ] <-- needed because of Argbash

I'm running the code with latest updates of Red Hat Enterprise Linux 7.4:

$ bash --version
GNU bash, version 4.2.46(2)-release (x86_64-redhat-linux-gnu)
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
$ m4 --version
m4 (GNU M4) 1.4.16
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Rene' Seindal.

[matejak]

Good catch, thank you for taking time to report it with the nice example! I will fix it shortly.