Function svn_diff_mem_string_diff4 

pub unsafe extern "C" fn svn_diff_mem_string_diff4(
    diff: *mut *mut svn_diff_t,
    original: *const svn_string_t,
    modified: *const svn_string_t,
    latest: *const svn_string_t,
    ancestor: *const svn_string_t,
    options: *const svn_diff_file_options_t,
    pool: *mut apr_pool_t,
) -> *mut svn_error_t

Generate @a diff output from the @a original, @a modified and @a latest in-memory strings, using @a ancestor. @a diff will be allocated in @a pool.

@since New in 1.5.