import { fn } from "https://deno.land/x/ddu_vim@v4.0.0/deps.ts";
const { diff_hlID } = fn;
Returns the highlight ID for diff mode at line {lnum} column
{col} (byte index). When the current line does not have a
diff change zero is returned.
{lnum} is used like with getline(). Thus "." is the current
line, "'m" mark m, etc.
{col} is 1 for the leftmost column, {lnum} is 1 for the first
line.
The highlight ID can be used with synIDattr() to obtain
syntax information about the highlighting.
Can also be used as a method:
GetLnum()->diff_hlID(col)