Allow/require modifications to comments upon submitting, in case of bad markup
Short, concise description of the idea
LiveJournal's HTML cleaner should detect bad HTML markup in a comment prior to submission, and prompt users to "fix irreparable" markup
Full description of the idea
Today I encountered my first comment with irreparable HTML markup in it. LiveJournal's HTML cleaner, which now displays the raw content of entries with malformed HTML, apparently does the same for comments. Obviously, the downside to this practice is that the author of a comment cannot correct any mistakes after the comment's been posted, and normally has to resort to re-posting the comment.
I'd like to propose that the HTML cleaner inspects the body text of a comment when someone clicks on the Submit button, and interrupts the submission process if it encounters markup errors to give the author the oppurtunity to fix them.
An ordered list of benefits
An ordered list of problems/issues involved
An organized list, or a few short paragraphs detailing suggestions for implementation