If-then uses ckgoto with k-condition and

kval init 1
ckgoto kval == 1, cont
ivar = 123
cont:
print ivar

result:  ivar = 123.000

`cggoto' also fails

`goto' works:

kval init 1
goto cont
ivar = 123
cont:
print ivar

result:  ivar = 0.000

`goto' works because it's without condition,
therefore I think that the problem is here (OOps/goto_ops.c)

int icgoto(CSOUND *csound, CGOTO *p)
{
    if (*p->cond)
      csound->ids = p->lblblk->prvi;
    return OK;
}

int kcgoto(CSOUND *csound, CGOTO *p)
{
    if (*p->cond)
      csound->pds = p->lblblk->prvp;
    return OK;
}

I now understand the difficulties of relinking with if-then.
When `create_goto_token' (csound_orc_expression.c) uses ckgoto,
if-then fails with the irate variables. It seems a bug to fix.

Returning to i() topic. Redefining "=.k" is wrong, I know it, it was
a first (wrong) reaction to the if-then problem. I have wanted only to
change the operations, like "add", "sub" etc. like the `goto' opcode

  { "goto", S(GOTO), 3, "",     "l", igoto, kgoto }

To add two kvars

  add k1 k2

doesn't change the state of `k1' or `k2'. The only sacrifice is
a calculation during the init pass. I have tried add.kk in the
modified version

  { "add.kk", S(AOP), 2, "k", "kk", addkk, addkk }

and I don't see problems yet; in

  kfoo = k1 + k2

the value of kfoo is the value of k1 + the value of k2 to the same k-cycle.
The init pass is gone (=.k is krate). It works fine with i(). Probably
the idea is wrong, but I want to see my errors in the practice, so
I'll make other tests with the hope to find a more convincing solution.
Sorry for all this noise.

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