RFE: Support environment variables in include directives

[larsks]

For managing a hierarchy of accounts and rules files, it would be great if I could do something like:

include $COMMON_RULES_FILE

Instead of:

include ../../../common.rules

Because a relative path like ../../../common.rules is fragile when things get moved around.

[the-solipsist]

What advantage is there in using $COMMON_RULES_FILE (which will after all need to be changed each time you change the location of the common rules file) over an absolute path for the file, e.g., /home/sol/accounts/meta.journal ?

[simonmichael]

Just another related idea, what if $HLEDGER_DIR was special, and include looked under there as a fallback ? I was wanting HLEDGER_DIR for some other reason as well.

The downside is more magical behaviour, more complication, more ways for it to go wrong. Environment variables are notoriously not always there when you want them, and hard for non-experts to configure.