I have task on my list, and this task has few tags associated with. I want to add one more tag, so i push the "s" shortcut.

Whole task line is selected. When i push a first letter of the new task, old tasks are overwinter. This is ok, but

It would be nice to have special behavior for "," kay: if user push comma as the first key, while editing tags line, carrier should be moved to the end of the line, and the tag should be added to the line instead of overwriting whole other tags.