Configuration

phil/text-diff-bundle

phil_text_diff:
    max_edits: 1000
    tokenizer: words
    html_sanitizer: html_sanitizer.sanitizer.app

Key	Default	Meaning
`max_edits`	`1000`	The most edits a comparison searches for, from zero; past it, the rest of the two texts is shown as replaced whole
`tokenizer`	`words`	What `text_diff` compares by when the template names nothing: `words`, `lines`, `paragraphs` or `html`
`html_sanitizer`	none	Service id of a `Symfony\Component\HtmlSanitizer\HtmlSanitizerInterface`: the HTML a comparison by `html` is given unmarked goes through it; without one, that HTML is escaped

max_edits keeps time and memory in check on texts rewritten from end to end: the search grows with the length of the texts times the number of edits, and its memory with the square of that number. A thousand keeps a comparison within a few megabytes; the documentation of phil/text-diff says more under Comparing texts.

html_sanitizer names one of the sanitizers FrameworkBundle declares:

framework:
    html_sanitizer:
        sanitizers:
            app.revisions:
                allow_safe_elements: true

phil_text_diff:
    html_sanitizer: html_sanitizer.sanitizer.app.revisions

A configuration value outside these — a negative bound, an unknown tokenizer — fails the container build.