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| author | Kaz Kylheku <kaz@kylheku.com> | 2023-07-27 20:24:33 -0700 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2023-07-27 20:24:33 -0700 |
| commit | 718718b657cc07dab9b3f3e74106b4ba4d0dadaf (patch) | |
| tree | b9217e739b0a82fcb82ebaf381eee1720b46b219 /tests/011 | |
| parent | 9fd7b65bfbc670dbfb14d7b46061e48d603dd98c (diff) | |
| download | txr-718718b657cc07dab9b3f3e74106b4ba4d0dadaf.tar.gz txr-718718b657cc07dab9b3f3e74106b4ba4d0dadaf.tar.bz2 txr-718718b657cc07dab9b3f3e74106b4ba4d0dadaf.zip | |
match: bug: lexical symbol macros neglected
When a pattern variable match like @foo references a global
symbol macro, that's treated as an existing expression to
match, and not a new binding. However, local symbol macros
are not treated this way; they are invisible to variable
patterns. That is an unintended inconsistency.
* stdlib/match.tl (var-list exists): Use lexical-binding-kind
rather than lexical-var-p. This returns true for lexical
symbol macros also.
* tests/011/patmatch.tl: New test cases.
* txr.1: Documentation revised to clarify that both global
and local symbol macros are considered to be existing variable
bindings by pattern matching.
Diffstat (limited to 'tests/011')
| -rw-r--r-- | tests/011/patmatch.tl | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/011/patmatch.tl b/tests/011/patmatch.tl index 2e05d59f..bb67e32e 100644 --- a/tests/011/patmatch.tl +++ b/tests/011/patmatch.tl @@ -583,6 +583,25 @@ (match-cond (`@x-24` `42-@y`))) "42-24") +(mtest + (symacrolet ((x 3)) + (match @x 4 x)) :error + (symacrolet ((x 3)) + (match @x 3 x)) 3 + (let ((x 3)) + (match @x 4 x)) :error + (let ((x 3)) + (match @x 3 x)) 3) + +(defvar dv :dv) +(defsymacro gs :gs) + +(mtest + (match @dv 0 dv) :error + (match @dv :dv dv) :dv + (match @gs 0 gs) :error + (match @gs :gs gs) :gs) + (compile-only (eval-only (with-compile-opts (nil unused) |