Map accounts and currencies?

[tbm]

I'm wondering if beancount2ledger should have the functionality to map account names and currencies.

I see two big disadvantages:

• It makes the code more complex
• All beancount account names and currencies are valid in ledger (*), so this isn't "needed".

(*) I thought one character was allowed in beancount currencies but not in ledger, but I can't find any evidence for this right now and maybe I was wrong.

OTOH, this would be useful for those going the ledger -> beancount -> ledger route and who might have different account names in ledger and beancount.

Arguably, it could be solved with a "contrib" Perl script, and maybe this is the way to go (although a simple s/.../.../ might not be enough, and if we start adding complexity why not do it in beancount2ledger itself?). Then again, maybe I'm overcomplicating things and a fairly simple s/.../.../ is good enough.

@zacchiro any opinion on this?

Initially I was going to add it to beancount2ledger itself, but it's not as easy as I thought, and now I'm thinking a contrib script might be better.

[tbm]

I thought about it and think:

1. Doing it with regex substitutions shouldn't be that complex

2. Why not do it in beancount2ledger, but as a function that does regex subst on the formatted ledger output. This way, the internals don't become too ugly.