Bug or limitation? Returns same result after a while.

[chanon]

I tried out the library through your blog post:
https://fasiha.github.io/post/mudder/

Using the second live code box, the one that starts with:

console.log(mudder.alphabet.mudder('anhui', 'azazel', 3))
// [ 'aq', 'at', 'aw' ]

I tried beginning with:

console.log(mudder.alphabet.mudder('a', 'z', 1))

which gives:

Array [
  "m",
]

I then try replacing the 'z' with 'm':

console.log(mudder.alphabet.mudder('a', 'm', 1))

which then gives:

Array [
  "g",
]

I then I replace the 'm' with 'g', and I keep doing this. Finally I will get

console.log(mudder.alphabet.mudder('a', 'aaa', 1))

which gives:

Array [
  "aaa",
]

which is the same as the input !?
So I can not go any further. This is only after about 9-10 iterations.

[chanon]

I'm guessing you need to tweak the algorithm to not allow consecutive aa characters or something as m69 said here:
https://stackoverflow.com/questions/38923376/return-a-new-string-that-sorts-between-two-given-strings/38927158#comment65214144_38924120

Starting with

console.log(mudder.alphabet.mudder('m', 'y', 1))

and replacing the result into 'y' will also end at:

console.log(mudder.alphabet.mudder('m', 'maa', 1))

giving

Array [
  "maa",
]

[fasiha]

Thank you so much for this!!! I'm so sorry, this bug was so stupid. I fixed it, if you now run the following

let r = 'z';
for (let i = 0; i < 50; i++) {
  r = mudder.alphabet.mudder('a', r)[0];
  console.log(r);
}

at https://fasiha.github.io/post/mudder/ you should get the expected behavior.

[fasiha]

Thanks especially for digging into this so much, even going so far as to check out m69's original post 😲🙌! Sorry the code is a little tricky to understand, the bug was caused by a micro-optimization I added at the last minute before publishing the code, and failed to realize that it would have a huge impact. That optimization can probably be massaged into working again but I just removed it since the library doesn't really need it (currently 😶).

[chanon]

Thanks for the fix!