Bash Coding style - Adopting C99 declarations

[Yair Lenga]

Hi,

I've noticed Bash code uses "old-style" C89 declarations:
* Parameters are separated from the prototype
* Variables declared only at the beginning of the function
* No mixed declaration/statements
* No block local variables

intmax_t
evalexp (expr, flags, validp)
     char *expr;
     int flags;
     int *validp;
{
  intmax_t val;
  int c;
  procenv_t oevalbuf;

  val = 0;
  noeval = 0;
  already_expanded = (flags&EXP_EXPANDED);


---
Curious as to the motivation of sticking to this standard for new
development/features. Specifically, is there a requirement to keep bash
compatible with C89 ? I believe some of those practices are discouraged
nowadays.

Yair