Task

Increment a numerical string.




/O> $ "1.2.3.4.5" $->n
... not if [ $ "not a valid integer" fail ]  
... 1+
... number$ echo$
... 

       Problem: not a valid integer
Quackery Stack: 12345
  Return stack: {[...] 0} {quackery 1} {[...] 11} {shell 5} {quackery 1} {[...] 4}

/O> $ "12345" $->n
... not if [ $ "not a valid integer" fail ]  
... 1+
... number$ echo$
... 
12346
Stack empty.
