ReOpen()ing the file without damaging view after change to the file?

[DeCEll-1]

So i have this lua code for the plugin:

local micro = import("micro")
local config = import("micro/config")
local shell = import("micro/shell")

config.RegisterCommonOption("csharpfmt", "csfmt", true)

function init()
    config.MakeCommand("csfmt", csfmt, config.NoComplete)
end

function onSave(bp)
    if bp.Buf:FileType() == "csharp" then
        csfmt(bp)
    end
    return true
end

function csfmt(bp)
    bp:Save()
    local _, err = shell.RunCommand("dotnet-csharpier --loglevel None " .. bp.Buf.Path)
    if err ~= nil then
        micro.InfoBar():Error(err)
        return
    end
    bp.Buf:ReOpen()
end

However a code like this:

namespace Program
{
    public class Program
    {
        public static void Main(string[] args)
{
Console.WriteLine("Hello World!");
        }
    }
}

Becomes this:

namespace Program
{
    public class Program
    {
        public static void Main(string[] args)
{
Con        sol            e.WriteLine("Hello World!");
        }
    }
}

After saving.
Only in the micro view, the file gets formatted correctly. Re opening the file (ctrl q > open the file back) displays it correctly
How can i ReOpen the file properly?
Full plugin: https://github.com/DeCEll-1/micro-csharp
same results on both:
Version: 2.0.14; Commit hash: 04c5770; Compiled on August 27, 2024;
and
Version: 2.0.15-dev.305; Commit hash: bc5e59c; Compiled on November 26, 2025;

[niten94]

The seen phenomenon is actually a bug with Micro: #3303

What's damaged is the loaded content and not the view, however one workaround is clearing the buffer before calling ReOpen():

local buf = bp.Buf
buf:Replace(buf:Start(), buf:End(), "")
buf:ReOpen() -- note that it's possible this returns an error

The code isn't good, but I've done this in a plugin I wrote before: https://github.com/niten94/micro-uchardet/blob/v1.1.2/plug.lua#L47

[DeCEll-1]

That works, thanks!