Opened 9 years ago
Closed 8 years ago
#1289 closed defect (fixed)
getopt-long (value #f) inconsistent with documentation
| Reported by: | Norman Gray | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | someday |
| Component: | extensions | Version: | 4.10.x |
| Keywords: | getopt-long | Cc: | |
| Estimated difficulty: |
Description
The documentation for getopt-long says that
(value FLAG [(PROPERTY VALUE) ...])
If FLAG is #t, the option requires a value;...
and
(predicate FUNC)
If the option accepts a value (i.e. you specified (value #t) for this option)...
These would seem to indicate that (value #t (predicate ,string)) would be acceptable, but the following program fails:
(use getopt-long)
(define grammar
`((test (single-char #\t)
(value #t ;(required "REQ")
(predicate ,string?)))))
(write
(getopt-long '("my-prog" "-t" "foo")
grammar))
(newline)
Result:
% csi getopt-long-demo.scm CHICKEN (c) 2008-2015, The CHICKEN Team (c) 2000-2007, Felix L. Winkelmann Version 4.10.0 (rev b259631) macosx-unix-clang-x86-64 [ 64bit manyargs dload ptables ] compiled 2015-08-04 on yves.more-magic.net (Linux) ; loading getopt-long-demo.scm ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/getopt-long.import.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/chicken.import.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/data-structures.import.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/srfi-1.import.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/srfi-13.import.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/srfi-14.import.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/matchable.import.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/lolevel.import.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/getopt-long.so ... ; loading /Data/tools/chicken-4.10.0/lib/chicken/7/matchable.so ... Error: invalid value specification : (#t (predicate #<procedure (string? x463)>))
Replacing the #t with (required "REQ") works as expected.
Change History (3)
comment:1 Changed 9 years ago by
comment:3 Changed 8 years ago by
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
Looks like it's fixed then
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Thanks for reporting this issue. I have added a clarification of the semantics of the value property to the getopt-long documentation.