Unable to send a message sometimes

[lukebarnard1]

Repro steps:

• Focus empty composer
• ctrl + j
• Hit Enter any number of times
• Observe the message not being sent.

Related: #4535

[lampholder]

It seems to go into the same 'code editing' mode as it does when it's in RTE mode. So I think:

• there's a bug where ctrl + j does anything when you're in markdown mode
• there's a bug where the UX whilst you're in code editing mode should be improved to make it:
  • obvious that carriage returns are not going to send the message (they're part of the code block)
  • obvious how you return to 'normal mode' to actually send the message

[lukebarnard1]

I think the second bullet point there is essentially fixing #4535. I've certainly never heard of that particular key combination but apparently some browsers use it for opening dev tools and given we have special treatment for ctrl+i, I'd happily get rid of it.

[lukebarnard1]

• Better visual indication of code blocks in the editor Apply CSS to <pre> tags to distinguish them from each other #4639
• Backspace at the start of a block toggles block formatting Interpret backspace at start of style block as block style toggle matrix-org/matrix-react-sdk#1232
• Enter in an empty block also toggles block formatting Interpret a split-block as format toggle for an empty block matrix-org/matrix-react-sdk#1258

[ara4n]

fixed in matrix-org/matrix-react-sdk#1890