Replace changing string including uppercase character with lowercase character

[silfer]

Scidam,

I am sincerely grateful for your effort !
As a Beotian, I simply copy-pasted your code and ran it, unfortunately with no different result:

<p>Material blabla ; [a-z]imension blabla ;<lb/></p>
<p>Sideral blublu ; [a-z]ticky Gonzalez blibli; [a-z]eductio ad absurdum bloblo</p>

However, your proposal reminds me about "definition of callable functions" and this is good.
In your code, it is like the defined function is then not called... Or I miss something?

Cheers