Highlight fixes in bug report discussion (feature request)

This is a feature request for the bug reporting interface (I believe filing a bug is the correct way to do this, sorry if not).

It would be nice if there was a way to highlight fixes/patches/workarounds in bug discussions. Coming back to a bug discussion after a while to look for a fix that works for some people can be painful reading through all the other comments to try and find the one with the fix.

If comments with with fixes/patches/workarounds could be highlighted they would be much easier to spot. One way to highlight would be to make the background colour yellow.

There is then the issue of how to choose which comments are a fix/patch/workaround. Some options include

1. when a user enters a comment, they could tick a box if they think the comment is a fix/patch/workaround.
2. it could be set by the assignee (or maybe the original reporter).
3. any comment containing "fix" "patch" or "workaround" could be highlighted.

1 seems the best of these options to me. All fixes etc would be highlighted, including some bad ones, but they would still be easy to find.

2 is more selective, but often won't happen.

3 is probably going to include lots of comments that aren't actually fixes etc.