diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 15 |
1 files changed, 14 insertions, 1 deletions
@@ -36903,7 +36903,20 @@ and .code expand* is that .code expand -suppresses any warning exceptions that are issued during expansion. +suppresses expansion-time deferred warnings (exceptions of type +.codn defr-warning ), +issued for unbound variables or functions. +To suppress a warning means to intercept the warning exception with a handler +which throws a +.code continue +exception to resume processing. +What this requirement means is that if unbound functions or variables +occur in the +.meta form +being expanded by expand, the warning is effectively squelched. Rationale: +.code expand +is may be used by macros for expanding fragments which contain references to +variables or functions which are not defined in those fragments. .coNP Function @ expand-with-free-refs .synb |