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Diffstat (limited to 'RELNOTES')
| -rw-r--r-- | RELNOTES | 72 |
1 files changed, 72 insertions, 0 deletions
@@ -1,3 +1,75 @@ + TXR 257 + 2021-04-22 + + + Features + + - parser: + - Invalid UTF-8 bytes and characters now allowed in literals and regexes. + - Treated using rules consistent with behavior of text streams. + - doc: + - General improvements in documentation, many due to of Paul A. Patience. + - build: + - Test suite no longer requires .expected files which are empty; + they materialize on-the-fly and make cleans them away afterward. + - streams: + - stream-max-len behavior changes for strings. Some small bugs + fixed in this area. + - structural pattern matching + - new @(scan) operator for finding a match over a list + - new defmatch macro for defining new pattern operators + - new pattern operators @(end) and @(sme) defined using defmatch + - TXR: + - Debug output for @(gather) directive reports exact list of variables + that were not bound. + - compile/eval: + - compile-error macro now prints error on *stdout* in addition to + throwing exception. + - upshot of this is that this helps editors navigate to the error. + - previously this worked for warnings, not errors. + - new binding operator: mac-env-param-bind + - port status: + - TXR ported to OpenBSD, amd64. + - internal: + - New C function dis that can be used debugging TXR with gdb to + disassemble VM code. + + Bugs: + + - compiler: + - (call (fun f) ...) forms not registering the reference to f, + causing lambdas to be incorrectly lifted to a scope where they + lose access to a needed lexical function. + - incorrect handling of trailing arguments in immediately-called lambda. + - bad diagnostic in compile-file when output file can't be opened. + - constant-folded (call ...) expressions not quoted. + - bug in dead code elimination (optimization level 6) causing + references to nonexistent assembly language labels. + - bug in frame elimination (optimization level 2) not initializing + some registers in code that can execute more than once due to loops. + - GC: + - Bug in sys:gc function fixed, whereby it wrongly resets the + internal flag which requests a full collection, leading to corruption + (since that flag is sometimes set for reasons of correctness). + - regex: + - The regsub function was found to have destructive behavior, + contrary to documentation. + - lib: + - fixed a bug causing the functions base-name, dir-name and TXR's + sysrooting calculations to be wrong on platforms where sizeof(wchar_t) + is 2 (Windows/Cygwin) and on MacOS. + - fixed the bogus assumption in the code, introduced in 2015, that there + are platforms with four-byte wchar_t which don't align L"..." literals + to four byte boundaries, and that MacOS is one of them. + - continuations: + - fix stack alignment on amd64 under clang. + - discovered during OpenBSD port, but not an OpenBSD problem. + - build: + - make referenced in a few places instead of $make, causing + some nuisance error messages on platform where GNU Make is gmake. + + + TXR 256 2021-04-07 |