Plugin command causes editor display bug

[mkerna]

Upon execution of the plugin code below, the editor strangely shifts each line as you move through it with the arrow keys. It I remove the "-v" (verbose) option from the copy command the problem goes away. But I do want the results of the execute.

N.B. I'm using micro version 2.0.14.

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

function init()
    config.MakeCommand("test", testCommand, config.NoComplete)
end

function testCommand(bp)
    local s, err = os.execute("cp -v -a main.lua main.lua2")
    if err ~= nil then
        micro.InfoBar():Error(err)
    end
end

[dmaluka]

When you run os.execute(), the command's stdout is just dumped onto the same console where micro prints its output, so it messes with micro.

What you want is a function such as micro's ExecCommand() or RunCommand() (documented in help plugins) that reads the command's output into a string, and then you can do with this output whatever you need to do with it.

[mkerna]

I tried using ExecCommand() and RunCommand(), but couldn't get them to deal with shell variables. The code above is the minimum to recreate the bug that I saw. The code below is what I want to do, which is to append the date to a file. It works with os.execute(), but not with shell.ExecCommand() or shell.RunCommand(). And os.execute(), of course, has the problem I showed.

Perhaps this is two bugs?

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

function init()
    config.MakeCommand("test", testCommand, config.NoComplete)
end

function testCommand(bp)
    --shell.ExecCommand("cp", "-v -a main.lua main.lua-$(date +\"%Y%m%d\")")
    shell.RunCommand("cp -v -a main.lua main.lua-$(date +\"%Y%m%d\")")
end

[Andriamanitra]

If you want to use shell features you can execute it in a shell, eg.

shell.RunCommand("sh -c 'cp -v -a main.lua main.lua-$(date +%Y%m%d)'")

Of course you could also get the date on the Lua side of things to avoid using a subshell:

shell.RunCommand(string.format("cp -v -a main.lua main.lua-%s", os.date("%Y%m%d")))

[mkerna]

That works. Thank you.

[JoeKar]

That works. Thank you.

So this issue can be closed, right?