Function apply_patch_file_with_replace_all 

pub fn apply_patch_file_with_replace_all(
    patch_text: &str,
    cwd: &Path,
    mode: ApplyMode,
    guard: Option<&PathGuard>,
    replace_all: bool,
) -> Result<Vec<EditResult>>

Like apply_patch_file, with replace_all for SEARCH/REPLACE documents.

false keeps unique apply. true updates every exact match. Unified diffs and Begin Patch reject true (invalid_input, no write).