# Mutants no test can kill, with the reason each is equivalent to the code it
# replaces. Recorded from the first mutation run of the render chain (infra
# `bb414371`, 2026-08-26: 9 survivors, 2 timeouts). Excluding them is what keeps
# a later run's "0 missed" worth reading.
#
# The patterns are regexes, so `+`, `*` and `|` need escaping. A bare `||` is an
# empty alternation and silently excludes every mutant in the crate.
#
# Add an entry only with its reason written out, and only after trying to kill
# the mutant with a test: of the nine survivors here, four were coverage gaps.
exclude_re = [
    # `inject_heading_ids` scans for a heading's text between its Start and its
    # End. Starting that scan at the Start event itself rather than one past it
    # changes nothing: `Event::Start` falls to the `_ => {}` arm and contributes
    # no text. Same for the outer cursor: landing on the End event instead of
    # one past it costs one loop iteration that matches no Start.
    "replace \\+ with \\* in inject_heading_ids",

    # The inner scan's bound. pulldown-cmark always closes a heading it opened,
    # so the loop leaves on `Event::End(TagEnd::Heading)` and the bound is never
    # the thing that stops it. `<=` would only differ on an event stream that
    # ends inside a heading, which the parser cannot produce.
    "replace < with <= in inject_heading_ids",

    # `permissive_builder` IS `ammonia::Builder::default()`, so replacing its
    # body with `Default::default()` is the same code. The function exists to be
    # the one named construction point for the permissive preset (UX-S3), not to
    # behave differently from the default, and the regression tests in
    # `sanitize` pin what that default has to keep doing.
    "replace permissive_builder -> ammonia::Builder<'static> with Default::default\\(\\)",
]