How to remove partricules and apostrophes in url
I have been able to achieve it with the Pathauto module 8.x-1.3, using the following settings (/admin/config/search/path/settings).


For Strings to Remove I used a, an, as, at, before, but, by, for, from, is, in, into, like, of, off, on, onto, per, since, than, the, this, that, to, up, via, with, d'
Under Punctuation, for Single quotation marks (apostrophe) ('), I selected No action (do not replace)


I used /content/[node:nid]/[node:title] as pattern for the nodes, and created a node with Personnes d'Allemagne as title. The path alias for that node has been set to /content/1/personnes-allemagne.


  


The disadvantage is that the apostrophe will not taken off from the path aliases, except when it is present in a string given for the Strings to Remove setting.