applied non-conflicting parts of suggested patch

[perl5.git] / Todo

diff --git a/Todo b/Todo
old mode 100755 (executable)
new mode 100644 (file)
index d8badae..ca5cbaf
--- a/Todo
+++ b/Todo
@@ -1,77 +1,56 @@
-Modules
-       POSIX (in progress)
-       X/Motif/Tk etc.
-
 Tie Modules
        VecArray                Implement array using vec()
        SubstrArray             Implement array using substr()
        VirtualArray            Implement array using a file
        ShiftSplice             Defines shift et al in terms of splice method
 
-Bugs
-       Make yyparse recursion longjmp() proof.
-       Make "delete $array{$key} while ($key) = each %array" safe
-       Wrong line reported for runtime elsif condition error
-
-Regexp extensions
-       /m  for multiline
-       /\Afoo/ (beginning of string, or where previous g match left off)
-       /foo\Z/ (end of string only)
-       negative regexp assertions?
-       /<>/x for grouping?
-       /f for fixed variable interpolation?
-       Rewrite regexp parser for better integrated optimization
-
 Would be nice to have
-       Profiler
        pack "(stuff)*"
+       Contiguous bitfields in pack/unpack
        lexperl
        Bundled perl preprocessor
-       Make $[ compile-time instead of run-time
        Use posix calls internally where possible
-       const variables
-       gettimeofday
-       bytecompiler
+       gettimeofday (possibly best left for a module?)
        format BOTTOM
-       willcall()
-       -iprefix.
+       -i rename file only when successfully changed
        All ARGV input should act like <>
-       Multiple levels of warning
-
-Pragmas ("assume" maybe?)
-       integer, float
-       nodebug, debug
-       autocroak?
+       report HANDLE [formats].
+       support in perlmain to rerun debugger
+       regression tests using __DIE__ hook
+       reference to compiled regexp
+       lexically scoped functions: my sub foo { ... }
+       lvalue functions
+       regression/sanity tests for suidperl
+       Full 64 bit support (i.e. "long long")
+       Generalise Errno way of extracting cpp symbols and use that in
+           Errno and Fcntl (ExtUtils::CppSymbol?)
+
+Possible pragmas
+       debugger
+       optimize (use less memory, CPU)
 
 Optimizations
-       Optimize switch statements
-       Optimize foreach on array
-       Optimize foreach (1..1000000)
+       constant function cache
+       switch structures
+       foreach(reverse...)
        Set KEEP on constant split
        Cache eval tree (unless lexical outer scope used (mark in &compiling?))
        rcatmaybe
        Shrink opcode tables via multiple implementations selected in peep
-       Cache hash value?
+       Cache hash value?  (Not a win, according to Guido)
        Optimize away @_ where possible
-       sfio?
        "one pass" global destruction
-
-Need to think more about
-       ref function in list context
-       Populate %SIG at startup if appropriate
-       write HANDLE [formats].
+       Rewrite regexp parser for better integrated optimization
+       LRU cache of regexp: foreach $pat (@pats) { foo() if /$pat/ }
 
 Vague possibilities
-       sub mysplice(@, $, $, ...)
-       data prettyprint function?  (or is it, as I suspect, a lib routine?)
-       Nested destructors
+       ref function in list context
        make tr/// return histogram in list context?
-       undef wantarray in void context
        Loop control on do{} et al
        Explicit switch statements
-       perl to C translator
-       multi-thread scheduling
        built-in globbing
        compile to real threaded code
        structured types
-       paren counting in tokener to queue remote expectations
+       autocroak?
+       Modifiable $1 et al
+