# 1. convert from CSV to hledger journal format
rm -rf t.rules$$; printf 'date-field 0\ndate-format %%d/%%Y/%%m\ndescription-field 1\namount-field 2\ncurrency $\nbase-account assets:myacct\n' >t.rules$$; echo '10/2009/09,Flubber Co,50' | bin/hledger convert --rules-file t.rules$$; rm -rf t.rules$$
>>>
2009/09/10 Flubber Co
    income:unknown          $-50
    assets:myacct            $50

>>>2 /using conversion rules file t.rules/
>>>=0

# 2. report rules parse error
# rm -rf t.rules$$; printf 'date-fiel 0\ndate-format %%d/%%Y/%%m\ndescription-field 1\namount-field 2\ncurrency $\nbase-account assets:myacct\n' >t.rules$$; echo '10/2009/09,Flubber Co,50' | bin/hledger convert --rules-file t.rules$$; rm -rf t.rules$$
# >>>
# 2009/09/10 Flubber Co
#     income:unknown          $-50
#     assets:myacct            $50

# >>>2 /using conversion rules file t.rules/
# >>>=0