This is a textformatter module that will automatically replace titles of other pages on your site with links to those pages. For example, if you have a template glossary-term, and mention the exact title of one page using that template in a textfield, the title will be automatically linked to that page (if the textfield uses that formatter). This is good for SEO, and saves you some manual labour. You can configure which templates should get automatically linked, and of course the formatter is only active for the fields you add this formatter to. Note that if you need more manual control over when and where titles are automatically linked, you're probably better of using Autolink from a Glossary by @mr-fan.
Features
Allows you to limit the automatic links by template.
Only includes published & visible pages by default, with an option to include hidden pages.
Automatically excludes the current page, with an option to change that behaviour.
Allows you to configure the minimum title length for linked pages.
Doesn't overwrite existing links, and detects most edge cases (titles inside other tag's attributes, titles inside existing links et c.).
Supports multi-language sites. Titles will only be linked if a title in the current language is set.
Can add configurable attributes to all automatically created links. This includes the ability to use page fields as replacement patterns for attributes. For example, you can create CSS classes that include the name of the template of the linked page.
Extensive options and hooks to change the generated markup completely. Need <mark> elements with a title attribute based on a page field instead of a link? No problem. See the example project below.
Prefer oldest or newest page in the case of duplicate titles.
Queries the database directly for improved performance.
Has options to switch between case sensitive and case insensitive modes, and force case sensitive behaviour even for case insensitive database collations.
Allows you to overwrite the module configuration via the API to call the module with different settings for different requirements on the same site.
Download & Documentation
The module is now available in the modules directory: https://modules.processwire.com/modules/textformatter-page-title-links/
You can download & install it through the backend using the classname TextformatterPageTitleLinks.
To install it manually, download or clone the module from the Github repository into your site/modules folder and install through the backend.
The complete documentation can be found in the README in the repository. Make sure to check out the module configuration page after installing the module.
Requirements
PHP 7.1 or higher
ProcessWire 3+ (it will probably work in older versions, I haven't tested those though).
This is my first module, I hope it may become useful to some of you ?
If you find any errors or have some other suggestions or feedback, let me know!