Treating DOT as space

Continuing the discussion from Dot not used as delimiter:

How do I update the word_delimter filter to look for dot and convert that to space ?

I would apply a char filter for replacements before the word delimiter
filter:

https://www.elastic.co/guide/en/elasticsearch/reference/current/analysis-mapping-charfilter.html

The tokenizer will be executed before any token filters, so may not have
the dot in your token at that point (depending on which tokenizer you used).

Ivan

I need dot to be both treated as DOT and also as space.

Can you please give me a example of how to do that in char filter?

Similar to this https://support.dtsearch.com/dts0154.htm