Re: very basic question incr

[jfw]

define(‘Count’,‘incr(Count)’)

then invoking it with
Count

produces m4: stack overflow

using:

define(‘Count’,incr(`Count'))
Count
produces m4: non-numeric to builtin`incr'

using:
define(`count',0)
define(`count',`incr(count)')
count

also produces stack overflow


Thanks, ok I'm now beyond infinite recursion.  Now what I want to do is
increment each time I invoke count.

I'm using lowercase ~ for left quote and lowercase " for right quote.  I'll
paste rather than retype.

So using:

define emit(`text', text)
define(`count',`0')
count
define(`count',incr(count))
count
count

emit(count)
emit(count)

define(`next_bit', `1')
define(`next_bit', eval(next_bit * 2))
next_bit
next_bit

M4 produces:

define emit(text, text)

0

1
1

emit(1)
emit(1)



2
2


I expected 0,1,2 and 2,4

Thanks again,

/s/ Jim WIlliams
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