Follow-up from "Draft: Improve code search matching for Advanced Search"

The following discussion from gitlab-com/www-gitlab-com!59303 (merged) should be addressed:

• @joshlambert started a discussion:

  @JohnMcGuire - similar to above not blocking for this MR, but the docs should be updated. The link for this section currently points to a closed issue which has been replaced.

  An improved strategy for the code_analyzer pattern and filters are being discussed in issue 29443. <-- Issue 29443 has been closed and points to a new issue.

This is the current Epic tracking the issue. &3621 (closed)