streamjoin/fairy

scripts make life easier

fairy's Issues

Support positional arguments

Need to provide a general approach to support positional arguments in bash scripts.

To achieve this, two key points need to do:

1. Use || to concatenate all arg_set_opt_var entries with the tail to be arg_set_pos_var (TODO). To this end, we need arg_set_opt_var to return non-zero for no value assignment.

2. In arg_set_pos_var, use one global variable __POS_ARG_CURSOR to count the positional index, and assign positional argument value to global variables POS_ARG_VAR_XX where XX is expanded from __POS_ARG_CURSOR.