6 /\Afoo/ (beginning of string, or where previous g match left off)
7 /foo\Z/ (end of string only)
8 Make specialized allocators
9 Optimize switch statements
10 Optimize foreach on array
11 Optimize foreach (1..1000000)
12 Set KEEP on constant split
13 Cache eval tree (unless lexical outer scope used (mark in &compiling?))
16 Shrink opcode tables via multiple implementations selected in peep
17 Straighten out the RS stuff in BEGIN
18 Make yyparse recursion longjmp() proof.
20 sub mysplice(@, $, $, ...)?
21 pretty function? (or is it, as I suspect, a lib routine?)
26 make tr/// return histogram in list context?
27 Implement eval once? (Unnecessary with cache?)
28 When does split() go to @_?
29 undef wantarray in void context?
31 filehandle references?