Opened 12 years ago
Closed 6 years ago
#988 closed enhancement (wontfix)
Add drop-prefix to import specifiers
| Reported by: | johnwcowan | Owned by: | |
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| Priority: | major | Milestone: | 5.1 |
| Component: | unknown | Version: | 4.8.x |
| Keywords: | Cc: | ||
| Estimated difficulty: | medium |
Description
I'm proposing to add "drop-prefix" to the list of import specifiers. It has the same syntax as "prefix", but the opposite semantics. Rather than adding the prefix to all imported identifiers, it removes the prefix from any imported identifiers that already have it. This allows you to strip prefixes you don't care about, or change them in two steps by wrapping "prefix" around "drop-prefix".
Chibi Scheme already has this import specifier, and I have written an R7RS-large proposal to provide it.
Change History (5)
comment:1 Changed 10 years ago by
| Milestone: | someday → 4.10.0 |
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comment:2 Changed 9 years ago by
| Milestone: | 4.10.0 → 5.0 |
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Who am I kidding? We'd be lucky if we get this done by 5.0.
comment:3 Changed 8 years ago by
| Estimated difficulty: | → medium |
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This needs to deal with inconsistencies caused (for example, when the prefix doesn't exist, or the prefix is the entire identifier, and I'm not sure if it can happen, but what to do when identifiers clash after doing this).
comment:4 Changed 8 years ago by
| Milestone: | 5.0 → 5.1 |
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Can be done without breaking backwards compat, and we have enough on our plates right now; moving to 5.1
Might be nice to get into 4.10.0