Re: [PATCH 1/2] xdiff-interface: export comparing and hashing strings

> This will turn out to be useful in a later patch.
>
> xdl_recmatch is exported in xdiff/xutils.h, to be used by various
> xdiff/*.c files, but not outside of xdiff/. This one makes it available
> to the outside, too.
>
> While at it, add documentation.
>
> Signed-off-by: Stefan Beller <sbeller@google.com>
> ---
> diff --git a/xdiff-interface.h b/xdiff-interface.h
> @@ -29,4 +29,20 @@ extern void xdiff_clear_find_func(xdemitconf_t *xecfg);
> +/*
> + * Compare the strings l1 with l2 which are of size s1 and s2 respectively.
> + * Returns 1 if the strings are deemed equal, 0 otherwise.
> + * The `flags` given as XDF_WHITESPACE_FLAGS determine how white spaces
> + * are treated for the comparision.
> + */
> +extern int xdiff_compare_lines(const char *a, long len_a,
> +                              const char *b, long len_b, long flags);