Suggest using attachment if post is too large

[nickgammon]

If you make a post that is too large (which is easy to do if you try to post code) you get a message like this:

I suggest suggesting to use the "attachment" feature, rather than just telling the user that the error "must be corrected". How do you "correct" code that is too big?

What users typically do then is "excerpt" their code (thereby hiding the problem) or upload to Pastebin or some such site, which other forum members are reluctant to use.

I suggest adding a paragraph to the error message, like:

The message exceeds the maximum allowed length (9000 characters).
We suggest you click Attachments and other options (below), then under the "Attach:" heading click "Browse" to browse for your source code or document, and attach it to your message.
If necessary, and if you have multiple files, you can zip them up and attach the .zip file.

[RobTillaart]

maybe also add:
"Alternative you can strip your sketch to a minimal version that shows the problem"

[per1234]

Even though we are now using a different forum framework than at the time of this proposal, there is still a post length limit (now 120000 characters instead of 9000) and a similar error message when it is exceeded: