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| author | Kaz Kylheku <kaz@kylheku.com> | 2021-01-29 20:29:18 -0800 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2021-01-29 20:29:18 -0800 |
| commit | 58c1642901889829eb55ceea2ae868dea848eab9 (patch) | |
| tree | ddec96a3b39d9b11e72e15ee48d885259873b8d5 /tests/011 | |
| parent | ab20526520a5458a40bdbf7b77af4cd5ef62c096 (diff) | |
| download | txr-58c1642901889829eb55ceea2ae868dea848eab9.tar.gz txr-58c1642901889829eb55ceea2ae868dea848eab9.tar.bz2 txr-58c1642901889829eb55ceea2ae868dea848eab9.zip | |
matcher: bugfix: @nil isn't trivial.
* share/txr/stdlib/match.tl (non-triv-pat-p): Extend
sys:var match so (sys:var nil) is identified as trivial.
* tests/011/patmatch.tl: Add broken test case fixed by this.
This doesn't show up when @nil is used as the only match.
It also doesn't show up if @nil is used in a vector or list
in a mixture with other operators, because those other ones
identify the overall list pattern as non-trivial. None
of the occurrences of @nil in the existing test suite,
like (@nil @nil @x) tickle the bug.
Diffstat (limited to 'tests/011')
| -rw-r--r-- | tests/011/patmatch.tl | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tests/011/patmatch.tl b/tests/011/patmatch.tl index 6a9c6f18..7768e89b 100644 --- a/tests/011/patmatch.tl +++ b/tests/011/patmatch.tl @@ -9,6 +9,7 @@ (yes no)) (test (when-match @a 42 (list a)) (42)) +(test (when-match (@nil) '(1) 'yes) yes) (test (when-match (@a @b @c) '(1 2 3) (list c b a)) (3 2 1)) (test (if-match (@a @b @c . @d) '(1 2 3 . 4) (list d c b a)) (4 3 2 1)) |