WordPress doesn't sanitize character ʼ (unicode U+02BC) when converting post title to slug

[ivanzhuck]

WordPress doesn't sanitize character ʼ (unicode U+02BC) when converting post title to slug

How to reproduce:

1. Create a post with title "Phʼnglui mglwʼnafh Cthulhu Rʼlyeh wgahʼnagl fhtagn"
2. Publish the post
3. The post gets slug "phʼnglui-mglwʼnafh-cthulhu-rʼlyeh-wgahʼnagl-fhtagn" instead of "phnglui-mglwnafh-cthulhu-rlyeh-wgahnagl-fhtagn"

[ashikur698]

Tried to recreate the same issue. The results are attached here
SC 1 - ​https://prnt.sc/Qc-iAbv4uiOA

In SC 1, I copied the exact title and it seems like I successfully recreated the issue.

Maybe there's something going on with that exact character. This one - ʼ. But not this one - '.

Added apostrophe character codes to the list of symbols which must be stripped from post URL slug

It replaces characters:

ʼ (U+02BC);
ˮ (U+02EE);
՚ (U+055A);
ߴ (U+07F5);
ߵ (U+07F4);
＇ (U+FF07)

with empty string.