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Diffstat (limited to 'RELNOTES')
| -rw-r--r-- | RELNOTES | 83 |
1 files changed, 83 insertions, 0 deletions
@@ -1,3 +1,86 @@ + TXR 110 + 2015-07-25 + + + Features + + - New relational predicate functions hash-subset and hash-proper-subset. + + - New functions hash-from-pairs and hash-list. + + - Improvements in quasiliterals: + - compound @@ now supported on numbers and symbols, improving utility of + quasiliterals in multiply nested op syntax. + - \@ escape introduced for encoding literal @ in quasiliterals. + - @<num> notation allowed in brace variables (more of a bugfix). + + - Optional trailing semicolon punctuator supported on hex and octal + characters in string and quasiliterals, like it already is on hex and octal + characters in the TXR pattern language. + + - The op syntax positional arguments @1, @2 ... and @rest are now + syntactic places: they can be assigned, etc. + + - Powerful new binding macros placelet and placelet* for creating lexical + aliases for syntactic places with once-evaluation semantics. + + - The "it" variable in the anaphoric ifa is now a place if the form that + it denotes is a place. The place is evaluated exactly once no matter how + many times the it variable is accessed or updated in its scope. + + - Hash-bang support in .tl files. + + - With only a few sensible exceptions, most unimplemented stream operations + now throw exceptions, rather than silently doing nothing. + + - Improved printed representation of stream objects. + + - New split function similar to partition, but keeps empty subsequences. + + - Deletion of a (cdr ...) place now has different semantics, symmetric + with deletion of a (car ...) place. + + - The accessors caar, cadr, cdar, cddr, ... are all provided now, in + all combinations down to five levels deep. + + - The functions second, third, fourth, ... are all accessors now, + and are provided up through tenth. They work with vectors and strings. + + - New feature, "place macros": special macro expansions which apply + only to syntactic place forms, making it a cinch to define + to define new places in situations when they are expressible as a + syntactic transformation to existing places. + + - The nthcdr function from Common Lisp is introduced, with the + added functionality that it behaves like an accessor. + + - New with-resources macro for block-scoped acquisition and release + of multiple resources. + + - Backslash-newline continuation in word list listerals (WLL-s) and + quasiword list literals (QLL-s) now separates words. An unescaped + newline is not allowed. + + Bugs + + - TXR 97 regression in quasiliterals fixed: `@{(expr) modifier}` ignores + modifier whenever (expr) is an expression that undergoes expansion. + + - Fix in printed representation of a stdio stream. + + - define-modify-macro was not registered for auto-loading. + + - Fixed broken unget-char and unget-byte on catenated streams. + + - Fixed broken lexical analysis of consecutive top-level forms, + like 4(x) where one call to the parser consumes 4(, so the + next call sees x). + + - Fixed bug in print and pprint: wrong return value when printing a dwim + form. These functions must always return their leftmost argument. + + + TXR 109 2015-06-21 |