Support for note sub-directive in commodity definition

[alensiljak]

I am trying to run hledger on my book file(s) and am getting

  |
6 |         note Euro
  |         ^^^^^^
unexpected "note E"
expecting "format"

for the commodity definition

commodity EUR
	note Euro
	format 1,000.00 EUR

Are the sub-commands supported for commodities? I'd like to be able to use my ledger files directly, for compatibility and cross-checking reasons.

I will keep this issue specific to the "note" subdirective. The use case is extremely simple. This directive can be safely ignored. It would be enough not to throw exceptions during parsing. The information is not used anywhere else, as far as I am aware.

Related: #1795

A workaround, due to the simplicity of the sub-directive, is to comment-out the note lines in commodity definitions.

[alensiljak]

linking #258

[alensiljak]

I believe the key is adding an option to parse note sub-directive here.

[alensiljak]

Adding account subdirectives for reference, as pointed out by Simon, in order to compare the code.