Replace the range of before and after the cursor with text. If in cmdline mode, edit cmdline. Otherwise, edit the buffer.

0-based and columns are utf-16 offset.

NOTE: In cmdline mode, do not include line breaks in text.

import { Denops } from "https://deno.land/x/denops_std@v5.0.1/mod.ts";
import { LineContext } from "./context.ts"
import { linePatch } from "./patch.ts"

export async function main(denops: Denops): Promise<void> {
  const ctx = await LineContext.create(denops);
  // String before the cursor
  const beforeLine = ctx.text.slice(0, ctx.character);
  // Replace string before the cursor with 'foo'
  await linePatch(denops, beforeLine.length, 0, "foo");
}