Macro appends to the last character instead of where the cursor is

[iskolares]

Adding a macro adds the comment to the last character typed in the text area, instead of where the cursor is.

Here's a screengrab of the behaviour.

1. Moved the cursor few a few blank spaces after "Regards," but it appends macro to "Regards,"
2. Moved cursor to the intended location where I wanted to add macro, still appends after "Regards,"

Could be really cumbersome if a tech already has typed a long reply, then tries to add a macro an intended location, but it appends at the end of the reply.

[Nness]

This will be on lower priority, it is good to have but not required.

Difficult:

• Need to maintain focus by prevent default mouse down behaviour.
• Instead of binding, we need to modify content through HTML element, by checking where the keyboard focus is then insert there.

This is such feature that require low level operation.