#338 ${...} style env var expansion in ASSIGN

[Edward Hart]

Currently GnuCOBOL supports "$BLAH" style environment variable expansion in ASSIGN clauses. The filiorewrite branch supports a ${BLAH} style syntax. From StackOverflow:

${variable} is just a disambiguation mechanism, so you can say ${var}text when you mean, the contents of the variable var, followed by text (as opposed to $vartext which means, the contents of the variable vartext).

This seems like a reasonable feature to want, so it should be merged into trunk.

[Simon Sobisch]

Note: trunk switched in the meantime, I'd also accept a merge of this single entry which should result only in a change in a single function into the 3.x branch.
@edward-h should we keep this FR assigned to you?

[Edward Hart]

No, feel free to unassign me.