Get `\` instead of empty value when deleting all the content

[sklinov]

A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Go to https://codesandbox.io/s/rich-markdown-editor-slash-oim2w?file=/src/App.tsx
2. Try to delete all the content or enter \
3. Check out console or value area to see that on empty value \ is set as a value

Expected behavior
Empty string is expected

Version
11.12.0-0

Screenshots

Desktop (please complete the following information):

• OS: MacOS
• Browser Chrome
• Version 92.0

[plitzenberger]

same here. Getting \ for every empty block

[gzuidhof]

I am seeing the same behavior, I haven't been able to figure out the cause.

[tommoor]

This is expected behavior at this time - a single slash is used to encode an empty paragraph, something that markdown doesn’t natively support. For display you can strip these with a regex

…

On Thu, Sep 30, 2021 at 13:51 Guido Zuidhof ***@***.***> wrote: I am seeing the same behavior, I haven't been able to figure out the cause. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#532 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAC474UPAQGTN4BSIWIENH3UESPTBANCNFSM5CWOSIWQ> .

[sklinov]

Yeah, stripping with regexp is that's what I've done eventually, so now my onChange looks like

onChange: (v: () => string) => {
        const val = v();
        const stripRegEx = new RegExp(/^\\\W*$/gm)
        const savedValue = stripRegEx.test(val) ? val.replace(/^\\/, "") : val
        setValue(savedValue);
        save(savedValue);
      },

[namlk-hamsa-dev]

Yeah, stripping with regexp is that's what I've done eventually, so now my onChange looks like

onChange: (v: () => string) => {
        const val = v();
        const stripRegEx = new RegExp(/^\\\W*$/gm)
        const savedValue = stripRegEx.test(val) ? val.replace(/^\\/, "") : val
        setValue(savedValue);
        save(savedValue);
      },

I do the same as you but get this error. Can anyone help me get rid of that nasty backlash from the end of my string. Thanks